Part No: P110Issued year: 2014File size: 0.25mbFile type: pdf
Corrosion costs the petroleum industry an estimated $1.3 billion in non-productive time, materials and labor annually. Imidazolines prepared from fatty acids and amines are a widely-used class of chemical corrosion inhibitor, due to excellent performance and ease of handling. However, commercial imidazolines are actually mixtures of several different chemical compounds, and the relative proportions of these species can have a large impact on both corrosion inhibition and product physical properties. The absence of gold standard analytical methods to characterize the active ingredients in imidazoline formulations limits the understanding of the chemistry of these materials. It is for this reason that a SPE-LC-MS method was developed to supplement the chemical information afforded by bulk testing / wet chemistry methods. It is anticipated that this method will have significant impact in the formulation of new corrosion inhibitors for oilfield applications as well as the quality control of finished products in manufacturing.
Part No: P116Issued year: 2014File size: 0.45mbFile type: pdf
This poster details current sample preparation strategies for aminoglycoside antibiotics in meat developed in a collaborative effort with Biotage and Tyson Foods, Inc. Springdale Corporate Laboratory to optimize analyte recovery (>70%), minimize analyte suppression and maintain acceptable method precision.
FAST LC-MS 2014
Part No: P047Issued year: 2012File size: 0.6mbFile type: pdf
The potential harm caused by synthetic cannabinoids is a significant concern since exposures and reports of human fatalities due to these substances is widespread . Detection of these relatively new type designer drugs in blood is essential in forensic toxicology, other scientific and medical fields.
Cannabinoids, SLE, SLE+, Supported Liquid Extraction,
Part No: AN818.v1Issued year: 2014File size: 1.54mbFile type: pdf
This application note describes the extraction of ethyl glucuronide and ethyl sulfate from human urine using ISOLUTE® NH2 solid phase extraction columns. The method has been applied real patient samples that had been previously analyzed with a validated referee method. The results of the orthogonal measurements agreed, to provide similar diagnostic values.
Part No: AN099-HORIssued year: 2014File size: 2.06mbFile type: pdf
Aflatoxins, a mold largely produced by Aspergillus flavus and Aspergillus parasiticus1 are commonly tested mycotoxins found naturally in a wide range of agriculture crops and food products. Due to their harmful effects on human health, animal health, and global trade, aflatoxins are regulated in most countries and have established global limits in a wide variety of matrices.
Part No: P183Issued year: 2018File size: 1.3mbFile type: pdf
The compound 4 Methylimidazole (4-MeI) is made during the production of caramel color commonly found in foods and beverages, especially sodas.
The Codex Alimentarius of the World Health Organization sets a limit of 250 mg/kg of 4-MeI. Also, the state of California has added 4-MeI to its Prop 65 list at an exposure level of 29 μg/day.
This study looks at 4-MeI levels in sodas and malt sodas which
are sold in and outside the state of California. The first section, included in this poster, describes the performance of automated solid
phase extraction of 4-MeI using conventional HPLC/MS detection.
ASMS 2018, San Diego, CA
Part No: P044Issued year: 2012File size: 0.89mbFile type: pdf
The objective was to develop a GC-MS assay for the determination of free benzodiazepines using Supported Liquid Extraction (SLE). The SLE extraction mechanism is very efficient, delivering higher analyte recoveries and cleaner extracts than equivalent LLE methods.
ISOLUTE, SLE, SLE+, Supported Liquid Extraction, Benzodiazepines, Forensic, Drugs, DOA, Drugs of Abuse, SOFT,
Part No: SSI-LCMS-096Issued year: 2018File size: 0.87mbFile type: pdf
Analysis of the perfluorinated alkyl acids listed in EPA Method 537 along with fluorotelomeric alcohols and perfluorinated sulfonates were extracted using SPE (using ISOLUTE 101 500 mg/ 6 mL SDVB SPE columns) and analyzed on the LCMS 8045. Minimum Detection Limits(MDL) ranged from 0.69 to 3.25 ppt. Extraction recoveries were greater than 80% for all compounds, with surrogate recoveries within 10% of the true value.
Part No: AN815Issued year: 2014File size: 1.52mbFile type: pdf
The method described in this application note achieves high recoveries of THC and an extended suite of common metabolites in oral fluid from Quantisal (Immunalysis) oral fluid collection devices.
This application note describes effective and efficient
ISOLUTE SLE+ protocols optimized for sample loading volumes of either 300 μL or 800 μL. The simple sample preparation procedure delivers clean extracts and analyte recoveries greater than 64% with RSDs of <10% for all analytes.
Part No: AN703Issued year: 2011File size: 0.04mbFile type: pdf
ISOLUTE EPH SPE columns and associated methodologies have been optimised to efficiently fractionate EPHs into aliphatic and polycyclic aromatic (PAH) fractions. The principle is similar to the approach taken by the Massachusetts Department of Environmental Protection (MADEP) and TPH criteria working group (TPHCWG) methods. However, compared to these methods, the ISOLUTE EPH fractionation column has been significantly reduced in size and the sorbent has been optimised in order to reduce solvent volumes and provide an automation compatible fractionation column. Automation of the fractionation process has been achieved without carryover of PAHs into the aliphatic fraction.
Environmental contamination, ISOLUTE, PAH, Polyaromatic hydrocarbons, soil,
Part No: P163Issued year: 2017File size: 0.58mbFile type: pdf
Over the past decade, the need for non-invasive drug screening that that precludes sample adulteration has become attractive. As a result, detection using oral fluid devices for Drugs of Abuse (DOA) has come to the vanguard of the scientific community. The use of Supported Liquid Extraction (ISOLUTE® SLE+) prior to LC/MS or GC/MS can improve sample cleanliness without forfeiting sample detection within a diverse panel of DOAs. Here, we demonstrate the effects of altering elution solvent polarity and pH for sample pretreatment upon the simultaneous recovery of 34 compounds comprised of opioids, benzodiazepines, and stimulants to directly measure the effects of the oral fluid buffer, OraSure™, upon extraction and signal intensity at presumed LOQs.
Part No: AN893Issued year: 2018File size: 0.91mbFile type: pdf
This application note describes the fully automated extraction of carboxy-THC from urine, following base hydrolysis prior to GC/MS analysis. The method was automated using Biotage® ExtraheraTM, configured for use with EVOLUTE EXPRESS ABN columns.
The method delivers clean extracts and analyte recovery of 90% with RSD lower than 10% for carboxy-THC and its deuterated internal standard. Using the Biotage® ExtraheraTM, 24 samples were extracted in approximately 38 minutes. The limit of quantitation of 2 ng/mL is below the SAMHSA/ EWDTS confirmation cut off of 15 ng/mL for workplace testing applications.
Part No: AN892Issued year: 2018File size: 0.87mbFile type: pdf
This application note describes the fully automated extraction of carboxy-THC from urine, following base hydrolysis prior to GC/MS analysis. The method was automated using Biotage® ExtraheraTM, configured for use with ISOLUTE SLE+ columns.
The simple sample preparation procedure delivers clean extracts and analyte recoveries greater than 80% with RSDs lower than 10% for carboxy-THC and its deuterated internal standard. Using Biotage Extrahera, 24 samples are extracted in approximately 35 minutes. Limit of quantitation is below the SAMHSA/EWDTS confirmation cut off of 15 ng/mL for workplace testing applications.
Part No: AN877Issued year: 2017File size: 2.61mbFile type: pdf
This application note describes the operating conditions for the automated fractionation of Extractable Petroleum hydrocarbons (EPH) into aliphatic and aromatic (PAH) fractions using the ISOLUTE EPH SPE column in conjunction with the Extrahera automation system.
Part No: RP-DS-04Issued year: 2010File size: 0.19mbFile type: pdf
When analyzing human urine for drugs of abuse, one of the most common tests is for the cocaine metabolite Benzoylecgonine (BZE). A contract laboratory has automated this labor intensive procedure using the RapidTrace.