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245 matches found for solid_phase_extractions

LC/MS/MS Analysis of Aflatoxins in Hops After Solid Phase Extraction Cleanup

Related Products • Food & Beverage Analysis • Toxins (other than pesticide/drug residues) • Supel™ Tox SPE Cartridges Related Articles • Reporter US Volume 34.1 • Analysis of Residual Solvents in Hemp Extract by Headspace SPME-GC/MS • Headspace SPME GC/MS Analysis of Terpenes in Cannabis • Quantifyi...

ENVI-Carb Plus for the Extraction of Propylene Glycol and Ethylene Glycol from Water

• • Download PDF • katherine.stenerson@sial.com Propylene glycol has a wide variety of applications, including uses as a solvent, emulsifier, and moisturizer in various chemical, food, and personal care products. Its toxicity to both humans and animals is relatively low. Ethylene glycol, which is wi...

Improvement in LC/MS Analysis of Vitamin D Metabolites in Serum by Leveraging Column Selectivity and Effective Sample Prep

Craig Aurand, Senior Application Chemist, craig.aurand@sial.com Clinical interest in vitamin D stems from its implications in an ever-widening range of human health conditions.1 This heightened interest has spawned the need for analytical strategies to assess an individual’s vitamin D status. Becaus...

Extraction and Analysis of PAHs in Olive Oil using Molecularly Imprinted Polymer SPE and GC-MS

Related Articles • A Comparison of Two Solid Phase Extraction Methods for the Analysis of Polyaromatic Hydrocarbons in Butter • Improved Recoveries and Lower Background for the Analysis of PAHs in Olive Oil • Chiral GC Analysis of Carvone Enantiomers in Essential Oils • Extraction and Analysis of PA...

Fluorous Separation Media - Fluorous Chemistry

The separation of fluorous compounds from non-fluorous compounds using fluorous silica gel is the central theme of fluorous techniques. Fluorous solid phase extraction (F-SPE) is used for quick separations of reaction mixtures involving FluoroFlash® tags, scavengers, and reagents. The separation of ...

Molecularly Imprinted Polymer SPE- Acid NSAIDs from Muscle

• • Download PDF • Related Articles • LC-MS of Illicit Bath Salts in Urine • Fast HPLC Using Fused-Core Particle Technology for Rapid Screening of Pharmaceutical Compounds • Metabolites – A Serious Challenge for LC/MS Separations and Usual Detection Techniques • Serum Lipidomics Profiling using an A...

Restriction Enzyme Double Digest Buffer Guide

Our restriction enzyme collection has been optimized for digestion using five unique buffers. When using two restriction enzymes at once, first check the enzyme activities in each buffer, using table on of the Restriction Enzyme Buffer Reference. If they both have 100% activity in the same buffer, y...

Quick, Sensitive LC/MS/MS Analysis of Aflatoxins in Cannabis

Related Products • Cannabis Testing • Food & Beverage Analysis • Toxins (other than pesticide/drug residues) • Supel™ Tox SPE Cartridges Related Articles • Reporter US Volume 34.2 • Analysis of Residual Solvents in Hemp Extract by Headspace SPME-GC/MS • Headspace SPME GC/MS Analysis of Terpenes in C...

Sample Cleanup for Analysis of Contaminants in Edible Oils [Webinar]

Current extraction and cleanup techniques for fatty samples may be time consuming and expensive; also, do not adequately remove matrix background prior to analysis. For this reason, a new sample prep approach was developed to provide simple, effective extraction of lipophilic persistent organic poll...

Extraction of Nitroimidazoles from Milk and Eggs using Molecularly Imprinted Polymers

Related Articles • Aminoglycoside Analysis in Honey Using Molecularly Imprinted Polymer Cleanup and LC/MS/MS • Aminoglycoside Analysis in Pork Muscle using Molecularly Imprinted Polymer Cleanup and LC/MS/MS • Fast Extraction and Low Level Detection of Chloramphenicol in Shrimp • Selective Extraction...

Restriction Enzymes

Click here to return to the Molecular Biology Guide Restriction endonucleases popularly referred to as restriction enzymes, are ubiquitously present in prokaryotes. The function of restriction endonucleases is mainly protection against foreign genetic material especially against bacteriophage DNA. T...

Bath Salts in Urine

• • Download PDF • LC-MS Analysis of Illicit Bath Salts in Urine on Ascentis Express HILIC after Solid Phase Extraction (SPE) on Supel-Select SCX This application demonstrates the analysis of bath salts extracted from human urine samples using polymeric solid phase extraction (SPE) sample preparatio...

Phenols - Chromatography and Sample Prep Literature from Supelco

Pub. Id. Subject Type Size (KB) No. of Pages T408127 Ascentis Express RP-Amide HPLC Columns Product Info. 536 2 T400130 The Quantitative Analysis of Semi-Volatile Organic Compounds on the MDN™-5S Capillary Column Product Info. 120 23 T409118 Ascentis Express HPLC Resource Guide Brochure 2,100 28 T10...

Solvent Desorption Tubes and Cartridges

LpDNPH Products ORBO™ Tubes, Coated Filters, PUF Cartridges Custom Tubes LpDNPH Products (ordering information) back to top LpDNPH cartridges are air-sampling devices designated for sampling carbonyls (e.g. formaldehyde) in ambient, indoor, and industrial atmospheres. Carbonyls are trapped on a high...

Frequently Asked Questions – Analytical Chemistry Products

The following links provide information or answers relating to frequently asked questions (FAQs) about our consumables and services for analytical chemistry. See Also: Helpful Guides If you need additional information, or would like to make a custom product request, please contact us! You can reach ...

Analysis of Pesticides in Baby Food by Solid Phase Microextraction (SPME) Using a New Overcoated Fiber

Related Products • Food & Beverage Analysis • Pesticide Analysis • Supelclean™ Ultra SPE Related Articles • Reporter US Volume 34.3 • Analysis of Pesticides in Turmeric Powder by LC/MS/MS • Extraction of Permethrin Pesticides from Spinach Using QuEChERS Methodology with Automated Shaking • Extractio...

Analytical Standards: Flame Retardant Standards

Polybrominated diphenyl ether standards accompany our chromatography products for this important analysis Refer to Analytix 1/2006 for additional details Polybrominated diphenyl ethers (PBDEs) are flame retardant chemical additives to polymers (plastics) that are used in the manufacture of printed e...

Building Blocks for Introducing Post-translational Modified Amino Acids

The Novabiochem® product line has always been at the forefront of the development for methods for the synthesis of peptides containing PTMs, being the first company to provide effective building blocks for synthesis of phosphorylated peptides, and sulfotyrosine and methylated arginine containing pep...

Analysis of Bisphenol A in Broth-Based Soup Matrices

Related Products • SupelMIP SPE Bisphenol A Related Articles • Reporter US Volume 33.3 (4 Mb PDF) • Determination of Bisphenol A in Drinking Water • SPME-GC-MS Determination of Phthalate Esters in Ramen Noodle Flavor Packets The use of bisphenol A (BPA)-based plastics in food and beverage containers...

Analysis of PCBs in Fish Oil

Related Articles • Reporter US Volume 33.4 Food & Beverage Supplement (3 Mb PDF) • A Comparison of Two Solid Phase Extraction Methods for the Analysis of Polyaromatic Hydrocarbons in Butter • GC Analysis of PCBs in Soybean Oil After Extraction using EZ-POP NP SPE • Development of a Method for Analys...

Increase Bioanalytical Assay Speed via Phospholipid Removal using HybridSPE™-Precipitation Technology

Craig Aurand and An Trinh an.trinh@sial.com One of the primary concerns when analyzing small molecules in biological samples via LC-MS/MS is ion-suppression. Ion-suppression is caused by one or more interfering components or species that co-elute with analyte(s) of interest during LC-MS analysis and...

Fluorous Application Guide

In addition to the extensive line of products, Sigma-Aldrich® and Fluorous Technologies, Inc. have prepared an array of tools to help you successfully implement fluorous techniques in your research. These tools include detailed application notes, a fluorous Cheminar™, ChemFiles, presentations, and l...

Semivolatiles - Chromatography and Sample Prep Literature from Supelco

Pub. Id. Subject Type Size (KB) No. of Pages T199925 SPME Application Guide Bulletin 925 657 135 T206004 Fast GC of Semivolatiles (TheReporter volume 24.4) Article 269 2 T295033 Polyacrylate File Fiber for Solid Phase MicroExtraction of Polar Semivolatiles from Water (Reporter Reprint) Article 928 3...

Empowering the Biochemist to Analyze Glycoproteins with Exceptional Reproducibility

BIOshell™ Glycan HPLC Columns Protein glycosylation is one of the most common and structurally diverse types of protein post translational modifications (PTM). The particular pattern of glycosylation as well as the location of the PTM has been shown to play a major role in numerous physiological and...

Helpful Guides

Air Monitoring Chemical Standards Gas Chromatography Gas Management HPLC and LPLC Purge and Trap Solid Phase Extraction Solid Phase Microextraction Download PDF Product Name Subject PDF file size No. of Pages Air Monitoring t110873 Bulletin 873 Thermal Desorption Applications Guide for Model 890/891...

Astec Chiral Chromatography Bibliography by Subject

Amino Acids, Peptides, Biomolecules Chemical, Environmental, Petrochemical Chiral LC-MS Food, Beverage, Natural Products Mechanistic Studies Pharmaceutical, Clinical Preparative, SFC, SMB Daniel W. Armstrong Publications Copyright restrictions do not permit us to provide copies of the articles liste...

Simplify Purification with FluoroFlash® Products!

In partnership with Fluorous Technologies, Inc., Sigma-Aldrich® is pleased to offer a wide range of fluorous products that allow for faster, more robust purifications. By combining fluorous tags with fluorous solid phase extraction (F-SPE), researchers can quickly and efficiently purify complex chem...

Isolation and LC-MS Characterization of Illicit Bath Salts in Urine

With the rapid development of unregulated designer and synthetic compounds, the field of illicit drug testing has recently been met with a changing environment. Of most concern has been the development of a class of phenethylamine and cathinone compounds being marketed as “bath salts,” “transposed c...

Interlaboratory proficiency testing on the analysis of alkylphenols, alkylphenol ethoxylates and Bisphenol A in surface and waste waters according to ISO/CD 18857-2 using new 13C-marked internal standards

• • Download PDF • Member of Working Group DIN NA 119-01-03-02-02 “Phenols with GC” Convener of Working Groups ISO TC 147/SC 2/ WG 17 “Phenols” and DIN NA 119-01-03-02-02 “Phenols with GC” As reported previously1, alkylphenols and their shortchain ethoxylates have considerable environmental relevanc...

FluoroFlash® SPE Cartridges for Fluorous Separations Benefits

The separation of fluorous compounds from non-fluorous compounds using FluoroFlash® silica gel is the central theme of fluorous techniques. Fluorous solid phase extraction (F-SPE) is used for quick separations of reaction mixtures involving FluoroFlash tags, scavengers, and reagents. The separation ...