Part No: P177 rev 2Issued year: 2018File size: 0.67mbFile type: pdf
This poster compares sample preparation options for the extraction of a panel of endogenous steroids from serum. LC-MS/MS parameters were investigated for increased sensitivity: MRM transitions, chromatography and mobile phase additives for use with positive and negative ionisation modes.
Particular emphasis was placed on the sample preparation to
provide high reproducible recoveries whilst minimizing matrix effects and co-extracted materials such as proteins and phospholipids. Solid phase extraction was compared to supported liquid extraction in terms of recoveries, ion suppression, phospholipid content, calibration curve performance and overall sensitivity.
MSACL EU 2018
Part No: P142Issued year: 2016File size: 0.57mbFile type: pdf
This poster summarizes various sample preparation strategies for the
extraction of MMA from serum without the necessity for derivatization, prior to LC-MS/MS analysis. A range of sample preparation techniques of varying complexity were evaluated: protein precipitation, phospholipid depletion, supported liquid extraction and solid phase extraction using both silica and polymer-based mixed-mode anion exchange chemistries.
Method performance was evaluated for evaporative effects, assay recovery, ion suppression and phospholipid removal.
Part No: AN023-HORIssued year: 2012File size: 0.85mbFile type: pdf
The purpose of this application note is to ensure that your environmental laboratory is in compliance with EPA Method 1664A Modifications or EPA Method 1664B utilizing the Horizon Technology SPE-DEX® 1000XL/3000XL Controller with application firmware version 1.08.
Part No: AN024-HORIssued year: 2012File size: 0.86mbFile type: pdf
The purpose of this application is to demonstrate the viability of a solid phase extraction (SPE) method utilizing the Horizon Technology SPE-DEX 1000/3000XL Controller with application firmware version 2.2 to extract samples for EPA Method 1664A/B and fulfill all QC requirements.
Part No: AN025-HOR.V.1Issued year: 2012File size: 0.88mbFile type: pdf
The purpose of this application note is to demonstrate the
viability of a solid phase extraction (SPE) method utilizing
the Biotage® Horizon 4790 Extractor with the Envision® Platform software version 1.02 to extract samples for EPA Method 1664A/B and fulfil all QC requirements.
Part No: AN879Issued year: 2017File size: 0.89mbFile type: pdf
There are a wide range of volatile and semi-volatile contaminants finding their way into both terrestrial bodies and water sources worldwide. In the United States (US), the contaminants are analyzed
according to stipulated US-EPA methods. In the European Union (EU), a large number of these same compounds are tested according to the European Water Framework Directive. Though these analytes are approached differently from a regulatory perspective, it is clear that background monitoring occurs on a global basis. Initial extraction of these analytes depends on the matrix being analyzed and is often a multifaceted process, but ultimately analysts are presented with some form of extraction/organic solvent they must concentrate to achieve instrumental limits of quantification. Presented within this technical note are the results of such an evaporative process using the new Biotage TurboVap® II.
Part No: AN050-HORIssued year: 2009File size: 1.23mbFile type: pdf
Polychlorinated biphenyls (PCBs) are found throughout the environment and are recognized as a serious health threat. They accumulate in animals and plants and become more concentrated as they progress up the food chain. PCBs can be found in the fatty tissues of human populations in all industrial countries, and they can be passed from mother to fetus through the placenta and to an infant through breast milk. They have been introduced into the environment mainly through the use of Aroclor products.
Part No: AN086-HORIssued year: 2013File size: 0.76mbFile type: pdf
Natural and synthetic phenolic compounds have been used in a wide range of applications, from antiseptics and fungicides, to food additives. With the adoption of the Clean Water Act (CWA), many phenolic compounds were placed on a list of Priority Pollutants.
Part No: UI404Issued year: 2014File size: 0.24mbFile type: pdf
Although the general analysis process contains extraction, extract drying, and evaporation steps prior to chromatography, this note will describe a procedure for the concentration of organic solvent extracts containing phenolic compounds.
Part No: PPS430Issued year: 2016File size: 0.97mbFile type: pdf
At the Forensic Medicine Lab at Toho University, researchers use ISOLUTE® SLE+ columns from Biotage. When dealing with samples that easily form emulsions like urine or blood, it allows researchers to use the established liquid-liquid extraction technique, saving significant amount of time on analysis. We spoke with the Head of the Forensic Medicine Lab Professor Masaru Terada.
Part No: UI406Issued year: 2016File size: 0.33mbFile type: pdf
The SPE-DEX 3100 Extractor is controlled through a small hand-held controller tethered to the instrument. The color touch screen is easy to see from any angle and features large icons to show the status of each station in the unit at any time.
Part No: Issued year: 2009File size: 0.12mbFile type: pdf
Biotage AB was established in 1997 under the name Pyrosequencing AB and a number of acquisitions were performed within the Medicinal Chemistry sector during the years of 2003-2005. After divesting the business area Biosystems in October 2008, the Company’s business is today made up entirely of the business area Discovery Chemistry. Biotage’s headquarters is located in Uppsala.
Part No: Issued year: 2010File size: 0.2mbFile type: pdf
Biotage AB was established in 1997 under the name Pyrosequencing AB. The Company made a number of acquisitions in the medicinal chemistry sector between 2003 and 2005. Following the disposal of the Biosystems business area, the Company consists of one business area – Discovery Chemistry. The Company’s head office is situated in Uppsala. Biotage applies the Swedish Code of Corporate Governance (”the Swedish Code”). The diagram below shows Biotage’s corporate governance model and how the central bodies interact.
Part No: Issued year: 2011File size: 0.72mbFile type: pdf
Biotage AB was established in 1997 under the name Pyrosequencing AB. The Company made a number of acquisitions in the medicinal chemistry sector between 2003 and 2005. Following the disposal of the Biosystems business area, the Company consists of one business area – Discovery Chemistry. The Company’s head office is situated in Uppsala. Biotage applies the Swedish Code of Corporate Governance (“the Swedish Code”). The diagram below shows Biotage’s corporate governance model and how the central bodies interact.
Part No: Issued year: 2013File size: 0.11mbFile type: pdf
Biotage AB was established in 1997 under the name Pyrosequencing AB. The Company made a number of acquisitions in the medicinal chemistry sector between 2003 and 2005. Following the disposal of the Biosystems business area, the Company is mainly active within analytical and organic chemistry.
Part No: PPS445Issued year: 2017File size: 0.62mbFile type: pdf
Ease of use is what stands out as the top feature of Isolera™ flash chromatography
system for Professor Anna Bernardi, head of the synthetic organic chemistry
research group at the University of Milan. Her current research goal: developing
sugar-like molecules, called glycomimetics, for healthier life.
Part No: PPS443.V.1Issued year: 2019File size: 2.98mbFile type: pdf
Analysis of drug panels in urine samples can be challenging, and the trend towards larger panels including multiple drug classes compounds the issues faced during method development.
This white paper examines a number of aspects of sample preparation, and their impact on the success of subsequent LC-MS/MS analysis of broad urine panels.
Section 1 examines the applicability of various sample preparation techniques: supported liquid extraction, reverse phase SPE and mixed-mode SPE, to the various classes of drugs extracted. In addition, hydrolysis approaches: enzyme type and protocol used (time, temperature), are compared.
Mixed-mode reverse phase/cation exchange SPE is widely used for extraction of basic drug classes from urine, but the inclusion of drugs and metabolites that exhibit ‘non-typical’ functionality within urine panels can be problematic. Section 2 examines the impact of various parameters (interference wash strength, elution solvent composition) on analyte retention, elution and extract cleanliness with particular focus on zwitterionic (gabapentin, pregabalin) and non-ionic (carisoprodol, meprobamate) drugs.
Part No: Issued year: 2011File size: 0.07mbFile type: pdf
Through innovative patented technology based on molecularly imprinted polymers (MIPs)
you will experience improved clean up in your processes. With a high probability of success,
unwanted contaminants or high value desirables can be selectively extracted from your
processes, resulting in more efficient production and cleaner products.
Part No: P102Issued year: 2014File size: 0.6mbFile type: pdf
Designed polymers are a class of selective resins with engineered selectivities for particular target molecules or ‘classes’ of molecules. These designed polymers are obtained by careful tuning of their surface chemistry and morphology which allows them to exhibit unique separation capabilities. The tailored and optimized selectivity of designed polymers is utilized to conduct difficult separations that are not able to be accomplished with conventional separation resins or other techniques.
Part No: AN927Issued year: 2019File size: 1.18mbFile type: pdf
This application note demonstrates the performance of the
Biotage® Horizon 5000 automated solid phase extraction system
for extraction of 1,4-dioxane from drinking water, in compliance with US EPA Method 522.
Part No: AN954Issued year: 2010File size: 0.09mbFile type: pdf
This paper demonstrates how the introduction of simple automated technology and a modification in analysis. Can
positively impact analytical results and overall throughput for critical environmental testing.
Part No: AN053-HORIssued year: 2015File size: 1.3mbFile type: pdf
Carbaryl, a commonly used insecticide for the past 20 years, has become a significant environmental concern throughout the world. Also known through its trademarked name Sevin, it is a cholinesterase inhibitor and can be toxic to humans, causing problems in the blood, nervous, and reproductive systems.
Part No: AN089-HORIssued year: 2014File size: 2.48mbFile type: pdf
Deoxynivalenol is a common mycotoxin found in agricultural grain crops and final consumer processed products. Most impacted are wheat, barley, and corn. Deoxynivalenol, also known as Vomitoxin, is produced by Fusarium fungi and has a unique dual-stage growth cycle of producing mold during warm daylight and toxin during cool nights. There is no known procedure or processing that will remove deoxynivalenol that is already present in grain.
Part No: AN001-HORIssued year: 2015File size: 1.35mbFile type: pdf
Hormones in drinking water are a growing concern, since the presence of these compounds can potentially be linked to serious health hazards such as human developmental and reproductive side-effects. Hormones are introduced into our environment in several ways. Natural and synthetic hormones that are given to livestock, pass though the animals, runoff into surface water, and leach into underground water supplies. Humans also produce and excrete natural hormone waste every day.
Part No: AN012-HORIssued year: 2010File size: 0.99mbFile type: pdf
The second Unregulated Contaminant Monitoring Regulation (UCMR2) program was developed to monitor US drinking water sources for currently unregulated compounds. EPA Method 529 is categorized under List 1, Assessment Monitoring in the UCMR2 program, and focuses on three explosives: 1,3-dinitrobenzene; 2,4,6- trinitrotoluene (TNT); and hexahydro-1,3,5-trinitro-1,3,5- triazine (RDX). The resulting data will be used by the EPA to determine whether or not regulatory standards should be established for these compounds.
Part No: AN057-HORIssued year: 2010File size: 0.72mbFile type: pdf
At present, pollution of freshwater algae has become aglobal environmental problem. Of all the different pollution types, microcystin LR is the most toxic and the most acute hazard as far as is known presently
Part No: AN078-HORIssued year: 2015File size: 1.25mbFile type: pdf
This application note was developed to demonstrate the extraction of five organophosphate compounds Monocrotophos, Diazinon, Malathion, EPN, and Methamidophos using one solid phase extraction method with one pre-treatment step of sodium chloride (NaCl). The method uses the Biotage® Horizon 4790 automated SPE extraction system. It will show the efficiency of the extraction while demonstrating excellent recoveries of OPP compounds using methylene chloride and minimal amounts of acetone after sample pre-treatment with sodium chloride. Methods were developed and results are shown using 47 mm Atlantic® HLB-H disks and carbon cartridges.
Part No: P201Issued year: 2019File size: 0.9mbFile type: pdf
An extraction protocol using a 10 mg mixed-mode cation exchange sorbent (EVOLUTE® EXPRESS CX) was developed and various sample sizes were assessed to determine the optimal sample volume for a 98-compound DOA panel. A method involving microelution off of the sorbent requiring no evaporation or reconstitution steps were also developed.
Part No: AN009-HOR.V.1Issued year: 2015File size: 0.58mbFile type: pdf
Method 525.2 describes the procedure to determine a full suite of low concentration semi-volatile organic compounds in drinking water using solid phase extraction (SPE) or liquid–solid extraction (LSE) techniques. The City of Fort Worth, Water Department implemented an automated SPE process for the analysis of semi-volatiles by EPA Method 525.2 using the Atlantic® C18 solid phase extraction disk. Ethyl acetate, methanol and water were used to condition the Atlantic C18 disk prior to the extraction step. The extraction solvents used were a 1:1 mixture of methylene chloride and ethyl acetate. Extracts were then analyzed by GC/MS using a splitless injection technique.
Part No: AN108-HORIssued year: 2016File size: 2.35mbFile type: pdf
Drinking water is a critical resource important for human health. As water becomes more scarce, quality will become increasingly important and monitoring will be required more frequently and at lower concentration levels. The number of compounds and lower concentrations for monitoring will make extraction and analysis even more challenging.
Part No: AN019-HORIssued year: 2010File size: 0.92mbFile type: pdf
The City of Fort Worth, Water Department conducted an evaluation of the Atlantic™ solid phase extraction (SPE) C18 disks using EPA Method 608. This application note describes the procedure to determine low ppb levels of organochlorine pesticides and PCBs in wastewater. This procedure used methylene chloride as the primary extraction solvent, followed by a hexane solvent exchange. Extracts were then analyzed by GC/ECD using a pressure pulse injection technique.
Part No: AN021-HORIssued year: 2009File size: 0.89mbFile type: pdf
Method 1657 describes the procedure to determine low ppb levels of organophosphorus pesticides in municipal and industrial wastewater.
The City of Fort Worth Water Department implemented Automated SPE for the analysis of organophosphorous pesticides by EPA Method 1657, using the Atlantic™ C18 solid phase extraction disk.
The Biotage® Horizon 4790 Automated Extraction System with Envision®
Platform controller, and the DryVap® Automated Drying
and Concentration System were used in this application note.
Part No: AN072-HORIssued year: 2012File size: 0.88mbFile type: pdf
Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental contaminants, naturally occurring in coal, crude oil, gasoline, and their byproducts (e.g. coal tar or creosote). In addition, PAHs are formed in the incomplete combustion processes of all organic materials, such as wood or fossil fuels. Consequently, the EU water framework directive (WFD) lists in its annex X the whole group of PAHs as priority hazardous substances.
Part No: AN038-HORIssued year: 2009File size: 2.13mbFile type: pdf
This application note demontrates that the Biotage® fully automated extraction, drying and concentration systems used with the Atlantic™ HLB disk are capable of extracting PAH compounds from sea water.
Typical extraction times using the Biotage® Horizon 4790 range from 20 to 25 minutes while drying and concentration on the DryVap® with the DryDisk® took approximately 35 minutes.
Part No: AN055-HORIssued year: 2015File size: 1.36mbFile type: pdf
Polybrominated diphenyl ethers (PBDEs) are a worldwide contamination problem. Structurally similar to PCBs, these compounds are long-lived in the environment and can bio-accumulate throughout the food chain. The health hazards of these chemicals have attracted increasing scrutiny and, as such, a great deal of research and regulations have been implemented to manage and control them.
Part No: AN011-HORIssued year: 2010File size: 0.93mbFile type: pdf
The second unregulated contaminant monitoring regulation (UCMR2) program was developed to monitor US drinking water sources for currently unregulated compounds. EPA Method 527 is categorized under List 1; Assessment Monitoring in the UCMR2 program. It focuses on a wide range of semi volatile organic contaminants including pesticides that were deferred during the first UCMR, flame retardants, and pyrethroid pesticides. This application for EPA Method 527 employs SPE with analysis by gas chromatography / mass spectrometry (GC/MS).
Part No: AN035-HORIssued year: 2009File size: 0.83mbFile type: pdf
The purpose of this application note is to demonstrate the use of a fully automated solid phase extraction (SPE) and concentration system that provides fast extraction while improving the quality and consistency of results for EPA Method 8270D.
Part No: AN104-HORIssued year: 2016File size: 1.48mbFile type: pdf
Drinking water is an important resource that can provide significant exposure to humans if it is polluted. Analysis of source water, which may come from surface water, groundwater or treated water must be evaluated for possible contaminants to ensure regulatory compliance.1 Drinking water at the tap is often evaluated for contaminants that may be introduced through leaks in the pipes or pipe materials.
Part No: AN036-HORIssued year: 2009File size: 0.86mbFile type: pdf
The purpose of this application note is to demonstrate the capabilities of the Biotage® Horizon 4790 Automated Extractor System when used for the analysis of nitramine, nitroaromatic, and nitrate ester compounds in surface and ground water.
Part No: AN058-HORIssued year: 2010File size: 0.9mbFile type: pdf
The purpose of this application note is to demonstrate the capabilities of the automated Horizon Technology solution when used for the analysis of EPA method 8061A phthalate ester compounds in surface and ground water. Method 8061A states gas chromatography/mass spectrometry (GC/MS) can be used as an alternative for compound confirmation for phthalate esters.
Part No: AN064-HORIssued year: 2015File size: 1.69mbFile type: pdf
Although not frequently a problem, recent incidents at sea have led to large amounts of crude oil being released and dispersed throughout the Gulf of Mexico, such as in the Deepwater Horizon Gulf oil spill of 2010. Originally presumed to be Louisiana Sweet Crude, sample testing later revealed a harsher form of crude containing a high amount of asphaltenes was actually being released.
Part No: AN063-HOR.V.1Issued year: 2012File size: 0.22mbFile type: pdf
Oftentimes it becomes necessary to test sea water for oil and grease analytes. Whether it is due to a controlled release of effluent water from a waste water treatment plant (usually during large rain storms) or a large oil spill, there is a need generated for a reliable, automated extraction and evaporation system.
Part No: AN061-HORIssued year: 2010File size: 0.74mbFile type: pdf
Throughout the world, a lack of regulation has been blamed for the detection of pharmaceuticals and personal care products (PPCP) in some bodies of water. While the detected amounts are usually relatively small, the persistence of these compounds means that they can cause untold damage to the ecosystem for years to come.
Part No: AN065-HORIssued year: 2010File size: 2.07mbFile type: pdf
Although not frequently a problem, recent incidents at sea have led to large amounts of crude oil being released and dispersed throughout the Gulf of Mexico. Originally presumed to be Louisiana Sweet Crude, sample testing later revealed a harsher form of crude containing a high amount of asphaltenes was actually being released. The differences are substantial, as Louisiana Sweet degrades more readily in nature than crude oil containing asphaltenes.
Part No: Issued year: 2014File size: 0.12mbFile type: pdf
This poster describes the development and validation of a method for supported liquid extraction of serum cortisol, with analysis by UPLC-MS/MS. The aim of this study was to develop a candidate reference method that could then be used to underpin the UK NEQAS Cortisol scheme.
MSACL EU 2014
Part No: AN004-HORIssued year: 2009File size: 0.72mbFile type: pdf
This evaluation study was conducted to determine the feasibility of the Biotage SPE-DEXÒ 4790 Automated Extraction System for the extraction of herbicides and pesticides. The preliminary results demonstrate the capability of this method for the automated SPE extraction of organic compounds.
Part No: Issued year: 2017File size: 0.27mbFile type: pdf
This poster describes a simple solid phase extraction method using EVOLUTE® EXPRESS ABN columns for the extraction of the marine toxins okadaic acid (OA), dinophysistoxins (DTX1 and DTX2), ciguatoxin 3C (CTX3C) and tetrodotoxin (TTX).
Part No: AN057Issued year: 2012File size: 0.21mbFile type: pdf
The formation of diarylethers by reacting an arylhalide and phenol is usually a reaction demanding long reaction times, high temperatures and strong bases, in order to obtain acceptable yield. The substitution patent of the electrophile and the nucleophile affects the reaction times mostly. A sterically hindered electrophile and a strongly deactivated nucleophile as outlined in the (Scheme 1) below, gives a very low yield (13 %) at conventional reflux for 2 weeks.1,2 Remainder was
recovered starting material. We have previously reported the dramatically shortened reaction time to 1 hour along with improved yield running the reaction outlined in the Scheme by heating by microwaves.
Part No: BIOMARK97.3Issued year: 2019File size: 0.24mbFile type: pdf
This letter is to inform you that effective April 1st, 2019 Biotage
will phase out the following products:
1. Biotage ZIP®, all column sizes as reported in Table 1
2. Biotage ZIP® Sphere, all column sizes as reported in Table 2
Part No: P131Issued year: 2015File size: 0.47mbFile type: pdf
DMSO and DMF are suitable injection solvents for reversed-phase flash purification. DMSO shows it can be loaded in larger volumes (up to 0.05 mL/g of C18 media or 3.5% of a column volume) without affecting chromatographic separations or carrying compounds with it.
Part No: AN101-HORIssued year: 2016File size: 1.07mbFile type: pdf
This application note highlights a SPE disk which was specifically designed to increase the recoveries of traditionally difficult polar compounds as well as help to increase the diversity of the traditional 525.2 list to include those compounds which are of concern in today’s society.
Part No: P171Issued year: 2017File size: 0.69mbFile type: pdf
This poster demonstrates protocols for the determination of a range of drugs of abuse following collection with the NeoSal™ oral fluid device and GC/MS analysis. The drug suites includes amphetamines and synthetic cathinones, barbiturates, benzodiazepines, cocaine, opiates, cannabinoids and synthetic cannabinoids.
SOFT 2017, Boca Raton
Part No: P174Issued year: 2017File size: 1.44mbFile type: pdf
This poster discusses the potential for a single extraction protocol
for various drugs of abuse classes in whole blood prior to UPLC-MS/MS analysis.
SOFT 2017, Boca Raton
also presented at SFTA, Marseille, France, 2018
Part No: P157Issued year: 2017File size: 0.8mbFile type: pdf
This poster demonstrates that a large urine panel, comprised of 43 DOAs, from multiple drug classes, can be simultaneously screened by mixed-mode cation exchange SPE (using EVOLUTE EXPRESS CX 96 well plates) despite their disparate intermolecular traits, by thoughtfully selecting appropriate organic wash and elution conditions that simultaneously enable sample isolation and detection along with minimizing sample matrix effects.
The extraction method is automated using the Biotage® Extrahera™ Automated sample Preparation Platform.
MSACL 2017, Palm Springs
SOFT 2017, Boca Raton
Part No: DLV_TN.0111Issued year: 2011File size: 0.08mbFile type: pdf
One of the most common flash purification challenges is
dealing with hard-to-dissolve crude samples. Because polar
solvents cause poor chromatographic results when used as
injection solvents in normal-phase flash chromatography, other
sample load options are needed.
Part No: prodes57Issued year: 2019File size: 0.32mbFile type: pdf
The DryDisk® 50 mL Barrel (PN 40-2485) is a disposable sample preparation
device that provides a fast and simple approach for removing
residual water from non-polar solvents. The DryDisk membrane replaces
the conventional sodium sulfate (Na2SO4) drying technique.
Part No: PPS515Issued year: 2019File size: 0.23mbFile type: pdf
The DryDisk membrane drying system provides advantages for removing water from nonpolar solvents, important in protecting the chromatograph in the analysis step, especially critical in protecting GC and GC/MS.
Part No: UI405Issued year: 2015File size: 0.46mbFile type: pdf
Removing water with a membrane rather than the older technique of passing the solvent through a column of sodium sulfate (Na2SO4) brings several advantages. The most important analytically is that the membrane will not adsorb analytes or contaminate the extract with matrix or other potential interferences.
Part No: PPS539Issued year: 2019File size: 0.25mbFile type: pdf
Why spend hours using traditional evaporation techniques when the automated evaporation capability of the DryVap System can take your compound to
dryness in minutes? Through the precise application of vacuum, heat and nitrogen sparge, the DryVap System gently and predictably evaporates all residual solvent from your compound allowing you to quickly move on to the next step.
Part No: P149Issued year: 2016File size: 0.12mbFile type: pdf
With the de-criminalization of recreational cannabis, containing the hallucinogen THC, and other cannabinoids with purported medicinal value, e.g. CBD (Figure 1), in several states a need for higher purity “products” has become a necessity. Current technology uses extraction with supercritical fluids or other non-supercritical solvents to remove the products of interest from other endogenous species such as lipids, terpenes, and chlorophylls as well as pesticides.
These techniques help clean up raw extracts and isolate cannabinoids with higher-purity but not to the levels desired by many producers so there is a developing need for a secondary purification step.
Part No: PPS376Issued year: 2015File size: 1.6mbFile type: pdf
User Case: Kissei Pharmaceutical Co., Ltd. One of Japan’s innovative pharmaceutical companies uses Isolera™ flash
purification systems and Biotage® Initiator+ microwave synthesizers in the
development of new prescription drugs. Modern lab instruments contribute to
efficient use of time and resources at Kissei Pharmaceuticals.
Part No: P143Issued year: 2016File size: 0.27mbFile type: pdf
Buprenorphine and Norbuprenorphine are typically problematic for analysis due to analyte stability issues during sample preparation.
This poster will demonstrate two fast and robust methods for the extraction of buprenorphine and norbuprenorphine in urine (using EVOLUTE EXPRESS CX), oral fluid (using EVOLUTE EXPRESS CX) and whole blood (using ISOLUTE SLE+).
Part No: PN43Issued year: 2011File size: 0.27mbFile type: pdf
Endogenous phospholipids present in biological fluids are a major problem in LCMS/ MS analysis as they are often very difficult to remove during sample preparation. When phospholipids are not removed, they retain very strongly on reversed phase analytical columns. If high organic (end of run) washes are not incorporated into the LC methods these matrix components may elute in subsequent analyses causing regions of suppression/enhancement leading to inaccurate quantitation. This poster evaluates the use of polymer-based solid phase extraction (SPE) sorbents, incorporating hydrophobic and various mixedmode retention mechanisms to address the problems associated with phospholipid removal.
Phospholipid, EVOLUTE, STRATA X, OASIS, WATERS, AX, WAX, CX, WCX, ABN, ASMS 2011
Part No: P078Issued year: 2014File size: 0.25mbFile type: pdf
This poster focuses on the different strategies that can be employed when using EVOLUTE SPE sorbents (with both single and dual retention mechanisms) to reduce or eliminate residual phospholipids in sample extracts.
Part No: P032Issued year: 2011File size: 1.35mbFile type: pdf
Endogenous phospholipids (outline structure shown in
Figure 1.) present in biological fluids are a major problem
in LC-MS/MS analysis. Due to their strong retention
characteristics in reversed phase chromatography
phospholipids tend not to elute as discrete peaks and are
often very difficult to separate from analytes of interest.
This co-elution often leads to areas of suppression or enhancement in the chromatogram which in turn can cause
quantitation issues. Supported liquid extraction (SLE) is an
analogous technique to traditional liquidliquid
extraction. This poster compares phospholipid removal using a wide variety of solvent combinations, pH control and polar extraction solvents on supported liquid extraction plates
Part No: AN096-HORIssued year: 2014File size: 2.89mbFile type: pdf
Mycotoxin testing in consumer food products has become increasingly important as global food trade increases, making it necessary to identify mycotoxins efficiently and accurately. Deoxynivalenol, also known as vomitoxin, is a mycotoxin commonly found in wheat feed crops. Because wheat is a highly-used raw agricultural export commodity in many counties for both animal feed and consumer food products, it is an important component in the diets of both humans and animals.