This study shows that the SPE-DEX® 4790 Automated Extractor system can process water samples containing suspended particulate matter, up to 1000 mg, for the analysis of PAH’s. As PAH’s are found in both the dissolved and particulate phase of the water sample, it is important to be able to handle “whole” water samples such that the particulate matter in the water sample is retained and extracted with the SPE disk. This filtration method ensures that the PAH’s found in the dissolved phase, and those adsorbed onto the particulate matter are properly extracted.
Acenaphthene Acenapthalene Anthracene Application Notes Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(ghi)perylene Benzo(k)Fluoranthene Chrysene Dibenzo(ah)anthracene Disk English Environmental Fluoranthene Fluorene GC-MS Indeno(123-cd)pyrene PAHs Persistant organic pollutants (POP) Phenanthrene Polyaromatic Hydrocarbons (PAH) Pyrene
This application note describes the extraction of Vitamin B3 (Niacin, nicotinic acid) and its key metabolites from serum using a strong cation exchange SPE retention mechanism. High reproducible analyte recoveries are achieved.
This application note describes the extraction of nine phthalate metabolites from human urine using ISOLUTE® ENV+ solid phase extraction columns.
Application Notes Biomarker Clinical Column English LC-MS/MS Mono(2-ethyl-5-carboxypentyl) phthalate (MECPP) Mono(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP) Mono(2-ethylhexyl) phthalate (MEHP) Monobenzyl phthalate (MBzP) Monobutyl phthalate (MBP) Monoethyl phthalate (MEP) Monohexyl phthalate (MHxP) Monoisononyl phthalate (MiNP) Monomethyl phthalate (MMP) Phthalate Metabolites Phthalates Urine
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.
This application note describes the extraction of acidic, basic, and neutral drugs from urine for screening purposes using ISOLUTE® SLE+ supported liquid extraction plates prior to LC-MS/MS analysis.
11-hydroxy- Δ9-tetrahydrocannabinol (THC-OH) 11-nor- Δ9-carboxy tetrahydrocannabinol (THC-COOH) 6-acetyl codeine 96-well plate Acidic Alprazolam Amphetamine Application Notes Barbiturates Basic Benzodiazepines Benzoylecgonine Buprenorphine Butalbital Clinical Clonazepam Codeine Dextromethorphan Diazepam Drugs of Abuse EDDP English Fentanyl Flunitrazepam Forensic Hydrocodone Hydrolysed urine Hydromorphone LC-MS/MS MDEA Naltrexone Neutral Nitrazepam Norbuprenorphine Norcodeine Norfentanyl Normeperidine Opiates Oxazepam Oxycodone Oxymorphone Pain Management Pentazocine Pentobarbital Phenobarbital Propoxyphene Secobarbital THC metabolites Temazepam Urine Δ9-tetrahydrocannabinol (THC)
La cromatografía flash en fase normal y fase reversa facilita el aislamiento de compuestos polares presentes en extractos de productos naturales. La combinación de avanzadas funciones de detección tales como barrido espectral, y evaporativo de luz dispersa (ELSD) incrementa la efectividad de la cromatografía flash en procesos de purificación de productos naturales.
This application note describes the extraction of 96 licit and illicit drugs of abuse from urine prior to UPLC-MS/MS analysis using EVOLUTE® HYDRO CX 96-well plates. EVOLUTE® HYDRO CX plates offer an efficient way to perform hydrolysis in the well of the extraction plate. This method provides high analyte recovery, reduced extraction time due to the elimination of a sample transfer step as well as the elimination of the column conditioning and equilibration steps, and a reduced risk for sample carryover or cross-contamination due to the elimination of the sample transfer step.
6-acetyl codeine 6-acetylmorphine (MAM) 7-Aminoclonazepam 7-Aminoflunitrazepam 96-well plate Alprazolam Amitriptyline Amphetamine Amphetamines Analgesics Application Notes Aripiprazole Atomoxetine Barbiturates Benzodiazepines Benzoylecgonine Buprenorphine Bupropion Buspirone Butalbital Carbamate hypnotic Carbamate muscle relaxant Carbamates Carbazepine Carisoprodol Chlordiazepoxide Chlorpheniramine Chlorpromazine Clinical Clomipramine Clonazepam Clonidine Clozapine Cocaethylene Cocaine Cocaines Codeine Cyclobenzaprine Desalkylflurazepam Designer stimulants Dextromethorphan Diazepam Dihydrocodeine (DHC) Drugs of Abuse Duloxetine EDDP English Ethyl Sulfate (EtS) Extrahera Fentanyl Fluoxetine Forensic Gabapentin Haloperidol Hydrocodone Hydrolysed urine Hydromorphone Hydroxyalprazolam Hydroxybupropion Hydroxymidazolam Hydroxytriazolam Imipramine Ketamine LC-MS/MS Lamotrigine Levetiracetam Lidocaine Lorazepam MDA MDEA MDMA Meperidine Meprobamate Methadone Methamphetamine Methaqualone Methcathinone Midazolam Morphine N-des-tapentadol N-desmethylclomipramine N-desmethyltapentadol Naloxone Norbuprenorphine Nordiazepam Norfentanyl Norhydrocodone Norketamine Normeperidine Noroxymorphone Norpropoxyphene Nortryptiline Opiates Opioid Opioid agonist Oxazepam Oxcarbazepine Oxycodone Oxymorphone Pain Management Pentobarbital Pharmaceuticals Phencyclidine (PCP) Phenobarbital Pregabalin Quetiapine Ritalinic acid Secobarbital Stimulants THC-COOH Tapentadol Temazepam Topiramate Tramadol Triazolam Trimipramine Urine Venlafaxine Zolpidem Zolpidem-phenyl-4-COOH mCPP z-drugs
This application note describes the use of ISOLUTE® ENV+ on-line cartridges in a fully automated on-line SPE-LC-MS/MS method for extraction and quantification of 16 acid herbicides in drinking and surface water.
2,4,5-T 2,4-D 2,4-DB Acid herbicides Application Notes Asulam Benazolin Bentazone Bromoxynil Dicamba Dichlorprop Drinking water English Environmental Ioxynil MCPA MCPB Mecoprop On-line SPE On-line SPE-LC-MS/MS Pentachlorophenol Quinmerac Surface water Triclopyr Water
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.
This application note describes the use of EVOLUTE® EXPRESS ABN on-line cartridges in a fully automated on-line SPE-LC-MS/MS method for extraction and quantification of 13 commonly prescribed pharmaceuticals (with a range of characteristics) in water.
Application Notes Atenolol Atorvastatin Azithomycin Carbamazepine Ciprofloxacin Clarithromycin Diclofenac English Environmental Erythromycin Fluoxetine On-line SPE On-line SPE-LC-MS/MS Pharmaceuticals Prednisolone Ranitidine Sertraline Tolytriazole Water
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.
11-hydroxy- Δ9-tetrahydrocannabinol (THC-OH) 11-nor- Δ9-carboxy tetrahydrocannabinol (THC-COOH) 11-nor-9-carboxy- Δ9-tetrahydrocannabivarin (THC-V-COOH) 11-nor-9-carboxy- Δ9tetrahydrocannabinol glucuronide (THC-COOH-g 11-nor-9-carboxy-Δ9-THC glucuronide Application Notes Cannabidiol Cannabigerol Column Drugs of Abuse English Forensic LC-MS/MS Oral fluid Saliva THC THC metabolites THC-COOH Δ9-tetrahydrocannabinol (THC) Δ9-tetrahydrocannabivarin (THCV)
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,
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.
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.
This application note describes the extraction of a range of SPICE drugs and metabolites in urine which are typically screened in forensic toxicology panels using ISOLUTE® SLE+ in a 96-well plate format. Both manual (Biotage Pressure+ 96) and automated (TECAN Freedom EVO® 100) processing conditions are described.
96-well plate Application Notes English Forensic JWH 018-N-(4-hydroxypentyl) JWH-018 JWH-018 JWH-018-(5-hydroxypentyl) JWH-018-N-5-(pentanoic acid) JWH-073 JWH-073-N-(3-hydroxybutyl) JWH-200 JWH-250 JWH-250-N-(5-hydroxypentyl) LC-MS/MS Synthetic Cannabinoids (SPICE) TECAN UR-144 UR-144-(5-hydroxypentyl) UR-144-(pentanoic acid) UR144-(5-chloropentyl) Urine XLR-11
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.
Acenaphthene Acenapthalene Aliphatic hydrocarbons Anthracene Application Notes Aromatic hydrocarbons Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(ghi)perylene Benzo(k)Fluoranthene Chrysene Column Dibenzo(ah)anthracene English Environmental Extrahera Fluoranthene Fluorene GC-MS Indeno(123-cd)pyrene Napthalene Phenanthrene Polyaromatic Hydrocarbons (PAH) Pyrene Soil
Cyclosporine is an immunosuppressant used in organ transplants to overcome rejection. Following the transplant of a heart, liver, kidney or lung, a patient must be regularly tested for the rest of their lives. Blood testing intervals vary from 1 month to 6 months and this rapid reference method is ideal for batch tests with the advantage of no metabolite interfer-ence which is always found in immunological methods.
The removal of interferences and sample concentration are essential steps in trace level detection of pesticides, sheep dips, herbicides and PCBs in river water, wastewaters and trade effluents. The following methods were developed by the Environment Agency National Laboratory Service facility at Nottingham using the Biotage RapidTrace for automated solid phase extraction and the TurboVap II for evaporation. The procedures are UKAS accredited and can reach detection limits of 0.001 ug/Litre for some compounds.
EPA methods 8260 & 8270 cover the analysis of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in ground & surface waters. This also now includes 1,4-dioxane and PCBs. This application note will focus on the automated SPE of the sample rather than the detection which usually involves GCMS or LCMS. NB The columns and reagents used for soils and sediment analysis differ to ground water extraction.
The extraction and segregation of Organic compounds from core samples taken from marine sediments is used to predict climate conditions, reconstruct sea temperatures and identify the type of vegetation from the C3 ( Temperate cli-mate) and C4 ( Tropical Climate) isotopic mass spectroscopy ratio analysis.
With the widespread clinical use of antidepressant drugs comes the need to accurately measure therapeutic lev-els to determine proper dosage, as well as check for toxic levels and patient compliance. More and more laboratories are shifting their therapeutic drug monitor-ing from liquid extraction to solid phase extraction. A large clinical laboratory has automated the process of extracting these drugs from serum using the RapidTrace SPE Workstation.
This study shows that the Biotage® 4790 Automated Extractor system, along with the Atlantic™ DVB disk, the DryDisk® separation membrane, and the DryVap® Concentrator System can be successfully used to analyze for Nonyl Phenol and Bisphenyl A in water samples. This sample preparation process is fully automated, requiring minimal human intervention, and allowing for reductions in sample processing costs.
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.
We demonstrate the capability of the Biotage® Initiator+ Alstra™ microwave peptide synthesizer to fully automate the on-resin synthesis of cyclic peptides with examples showing disulfide bridge formation and side-chain to side-chain cyclization respectively.
Whether you need targeted methods for analytes such as Vitamin D metabolites in serum, or methods suitable for extraction of a wide panel of drugs and metabolites from urine, sample preparation before analysis is essential. This compendium highlights a selection of clinical sample preparation applications from Biotage.
Alcohol metabolite Application Notes Biomarker Brochures Catecholamines Clinical English Pain Management Peptides Product Notes Steroid Hormones Steroid metabolite Thyroid Hormone Tobacco Specific Nitrosamines (TSNAs) Vitamin D Vitamins Water Soluble Vitamins
EPA Method 1657 describes the procedure to determine low ppb levels of organophosphorous pesticides in wastewater. The disks compared in this study are: “Certified for Automation” Atlantic™ C18 (47 mm) and 3M Empore™ High Performance Extraction Disk C18 (47 mm).
4790 Application Notes Azinphos methyl Chlorpyrifos Demeton (O&S) Diazinon Disk Disulfoton EPA 1657 analytes EPN English Environmental Ethion Ethyl parathion GC-FPD Malathion Methyl parathion Organophosphate Pesticide Waste water
EPA Method 608 describes the procedure to determine low parts per billion levels of organochlorine pesticides, polychlorinated biphenyls, toxaphene and chlordane in wastewater. The laboratory that collected the data presented in this application note uses EPA method 608 ATP3M0222 as the approved SPE technique for waste water extraction. The disks compared in this study are : “Certified for Automation” Atlantic™ C18 (47 mm) and 3M Empore™ High Performance Extraction Disk C18 (47 mm). Comparisons were made using side-by-side extraction and identical calibration parameters.
4,4,DDD 4790 Aldrin Application Notes DDE Dieldrin EPA 608 analytes Endosulfan Endosulfan sulfate Endrin Endrin Aldehyde Endrin Ketone English Environmental GC/ECD Heptachlor Heptachlor epoxide Methoxychlor Organochlorine pesticides (OCP) PCB PCB1016 PCB1260 PCBs TCMX Waste water α-BHC β-BHC γ-BHC δ-BHC
EPA Method 525.2 describes the procedure to determine low ppb levels of semi-volatile organic material in drinking water using solid phase extraction (SPE) or liquid-solid extraction (LSE) techniques. The extraction solvents are methylene chloride and ethyl acetate. Extracts are analyzed by GC/MS using a splitless injection technique.
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.
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.
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.
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.
11-nor- Δ9-carboxy tetrahydrocannabinol (THC-COOH) 6-acetylmorphine (MAM) 7-Aminoclonazepam 96-well plate Alprazolam Amitriptyline Amphetamine Amphetamines Anaesthetic Anticonvulsant Application Notes Barbiturates Benzodiazepines Benzoylecgonine Buprenorphine Butalbital Cannabinoid Carbamate hypnotic Carbamate muscle relaxant Carbamates Carisoprodol Chlordiazepoxide Clinical Clonazepam Cocaine Cocaines Codeine Diazepam Dihydrocodeine (DHC) EDDP English Fentanyl Forensic Gabapentin Hallucinogen Hydrocodone Hydrolysed urine Hydromorphone Ketamine LC-MS/MS Lorazepam MDMA Meperidine Meprobamate Methadone Methamphetamine Morphine N-des-tapentadol Naloxone Norbuprenorphine Nordiazepam Norfentanyl Norhydrocodone Norketamine Normeperidine Noroxymorphone Norpropoxyphene Nortryptiline O-desmethyltramadol Opiates Opioid Opioid agonist Oxazepam Oxycodone Oxymorphone Pentobarbital Phencyclidine Phencyclidine (PCP) Phenobarbital Pregabalin Product Notes Ritalinic acid Secobarbital Stimulants Sympathomimetic amine THC metabolites THC-COOH Tapentadol Temazepam Tramadol Tricyclic Antidepressant Zolpidem Zolpidem-phenyl-4-COOH z-drugs α-OH alprazolam
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.
1,3,5-trinitrobenzene 1,3-dinitrobenzene 2,4,6-trinitrotoluene (TNT) 2-amino-4,6-dinitrotoluene 2-nitrotoluene 3,5-dinitroaniline 3-nitrotoluene 4-amino-2,4-dinitrotoluene Application Notes Disk English Environmental Explosives GC/MS/MS RDX SUR_1,2,4-trimethyl-5-nitrobenzene SUR_1,3,5-trimethyl-2-nitrobenzene SUR_Nitrobenzene-d5
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.
Acenaphthylene Alachlor Aldrin Alpha-Chlordane Anthracene Application Notes Atrazine Benzo (a) Anthracene Benzo (b) fluoranthene Benzo (g,h,i) Perlene Benzo (k) Fluoranthene Benzo(a)pyrene Bromacil Butylbenzylphthalate Di-(2-ethylhexyl) Phthalate Di-n-butylphthalate Dibenz (a,h) Anthracene Diethyl phthalate Dimethylphosphate (DMP) Disk Drinking water Endrin English Environmental GC-MS Gamma-BHC Gamma-Chlordane Heptachlor Hexachlorobenzene Hexachlorocyclopentadiene Indeno (1,2,3-cd) Pyrene Methoxychlor Metolachor Organic Compounds Pentachlorophenol Phenanthrene Prometon Propachlor Pyrene Simazine Trans-nonachlor Trifluralin
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.
4,4,DDD 4790 Aldrin Application Notes DDE Disk EPA 608 analytes Endosulfan Endosulfan sulfate Endrin Endrin Aldehyde Endrin Ketone English Environmental GC/ECD Heptachlor Heptachlor epoxide Methoxychlor Organochlorine pesticides (OCP) Organochlorines PCB PCB1016 PCB1260 PCBs TCMX Waste water α-BHC β-BHC γ-BHC δ-BHC
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.
4790 Application Notes Azinphos methyl Chlorpyrifos Demeton (O&S) Diazinon Disk Disulfoton EPA 1657 analytes EPN English Environmental Ethion Ethyl parathion GC-FPD Malathion Methyl parathion Organophosphate Pesticide Waste water
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).
1,3,dimethyl-2- nitrobenzene Application Notes BDE-100 BDE-153 BDE-99 Dimethoate Disk Drinking water English Environmental GC-MS Hexabromobiphenyl Perylene-d12 Pesticides Terbufos Sulfone Triphenyl phosphate
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.
Acetochlor Alachlor Application Notes Atrazine Base-neutral herbicides Chlorothalonil Chlorpyrifos Clomazone Cyanazine Deethylatrazine, Demethanamid Desethyl atrazine Desisopropyl atrazine Diazinon Dimethoate Disk EPTC English Environmental Ethafluralin Fonofos GC-MS Malathion Metazachlor Methyl parathion Metolachlor Metribuzin Metribuzin DA Metribuzin DADK Metribuzin DK Pendimethalin Persistant organic pollutants (POP) Pesticides Phorate Prometon Propachlor Propazine Simazine Terbufos Triallate Trifluralin Water
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.
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
EPA Method 506 is used to determine Phthalate and Adipate Esters in drinking water. The analytes are extracted from water using a Horizon Technology 47 mm Atlantic C18 disk. The disk is extracted with Acetonitrile and Methylene Chloride. The extract is then dried and concentrated to a final volume of 1.0 mL using the Horizon Technology DryVap® with DryDisk® technology. Final analysis is by GC/PID.
Method 508.1 is used to determine twenty-nine chlorinated pesticides, three herbicides, and four organohalides in ground water, drinking water, and water in any treatment stage. The analytes are extracted from the water using a 47 mm C18 disk. The disk is extracted on the Horizon Technology SPE-DEX® 4790 Automated Extraction System using Ethyl Acetate and Methylene Chloride (DCM). The extract is then dried and concentrated using the Horizon Technology DryVap® with DryDisk® technology. Final analysis is by GC/ECD.