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389 matches found for Pesticides

Pesticides & Herbicides - Chromatography and Sample Prep Literature from Supelco

Pub. Id. Subject Type Size (KB) No. of Pages T100758 Analyzing Chlorinated Pesticides by Packed Column and Capillary Column GC Bulletin 758 208 8 T100769 Monitoring Airborne Contaminants in Workplace Atmospheres, Using Sampling Devices and GC or HPLC Bulletin 769 345 12 T196900 Solid Phase Extractio...

Improve Analysis of Pesticides in Oranges

Although pesticides have proven to be invaluable in crop control, the same toxicity, stability, and mobility that enables them to effectively kill insects causes detrimental effects in humans and the environment1. Worldwide pesticide use in modern agriculture has led to the manifestation of pesticid...

Analysis of Pesticide Residues in Ginger Powder Using QuEChERS Extraction and Clean-up with a Novel Dual Layer SPE Cartridge

Analytix Reporter Issue 6 | 2019 Related Products • Supelclean™ Ultra SPE • Solvents • SLB® GC Columns • Ascentis® Express HPLC Columns • QuEChERS Products • Pesticide Reference Materials Related Links • Pesticide Analysis • Food & Beverage Analysis Related Articles • Analysis of Pesticides in Turme...

Analysis of Pesticide Residues in Cannabis Using QuEChERS Extraction and Cleanup Followed by GC/MS/MS Analysis

Related Products • Cannabis Testing • Food & Beverage Analysis • Pesticide Analysis • Supel™ QuE Verde for Challenging Compounds in Green Matrices 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 Ter...

Comparison of QuEChERS Products for the Extraction of Planar Pesticides from Spinach

Related Products • Food & Beverage Analysis • Pesticide Analysis • QuEChERS (Dispersive 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 • Extra...

Extraction and Analysis of Agricultural Pesticides from Oranges Using the “QuEChERS” Method

• • Download PDF • kstenerson@sial.com The toxicological effects of the chemicals which humans and animals are exposed to daily are of ever-increasing concern. In the last few years, emphasis has been placed on a group of chemicals loosely referred to as endocrine disruptors; mostly man-made compoun...

Analysis of Pesticides in Turmeric Powder by LC/MS/MS and GC/MS/MS after Cleanup with a Novel Dual-Layer SPE Cartridge

Analytix Reporter Issue 1 | 2018 Products & Related Products • View Product List • Turmeric Standards • Supelclean™ Ultra SPE • Solvents • SLB GC Columns • Ascentis Express HPLC Columns • QuEChERS - Dispersive SPE Tubes Related Links • Pesticide Analysis • Food & Beverage Analysis Related Articles •...

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...

Dual-Column GC Analysis of Organochlorine Pesticides on SLB-5ms and SLB-35ms

Related Products • SLB-5ms Capillary GC Columns • SLB-35ms Capillary GC Columns Related Articles • Reporter US Volume 33.4 (4 Mb PDF) • ‘Positive List’ Chemicals by GC-MS on the SLB-5ms • Chemical Standards and Capillary Columns for US EPA Methods 608.1 and 608.2 • SLB-5ms Fast GC Columns for Semivo...

flavin containing monooxygenase 1
Synonyms
Species Human (2326) , Species Mouse (14261) , Species Rat (25256) , Species Thale Cress (838508) , Species cow (508781) , Species dog (403604) , Species domestic cat (101087122) , Species naked mole-rat (101709396) , Species domestic guinea pig (100723945) , Species sheep (101105089) , Species Domestic Rabbit (100009120)
Summary: Metabolic N-oxidation of the diet-derived amino-trimethylamine (TMA) is mediated by flavin-containing monooxygenase and is subject to an inherited FMO3 polymorphism in man resulting in a small subpopulation with reduced TMA N-oxidation capacity resulting in fish odor syndrome Trimethylaminuria. Three forms of the enzyme, FMO1 found in fetal liver, FMO2 found in adult liver, and FMO3 are encoded by genes clustered in the 1q23-q25 region. Flavin-containing monooxygenases are NADPH-dependent flavoenzymes that catalyzes the oxidation of soft nucleophilic heteroatom centers in drugs, pesticides, and xenobiotics. [provided by RefSeq, Jul 2008]

Foodborne Pesticide Analysis: Going Beyond the Dirty Dozen

Products for Pesticide Analysis • Full portfolio list of PESTANALⓇ and TraceCERTⓇ standards and CRMs • Pesticide Certified Reference Materials for Chromatography ( neats) • Labeled Pesticide Reference Materials • Sample preparation (QuEChERS & SPE, SPME) • Columns for HPLC & Gas Chromatography and M...

GC/MS Analysis of Pesticide Residues in Baby Food

Immersion Solid Phase Microextraction (SPME) has not been a common approach for pesticide residue analysis of foods. The high background in many foods poses a challenge to immersion SPME due to the presence of fats, sugars, pigments and other macromolecules. These can stick to the fiber and reduce i...

Environmental Pesticide Standards

We offer a comprehensive portfolio of pesticides standards and CRMs. Under the well-known brands PESTANAL® and TraceCERT® more than 1300 high purity pesticides and pesticide metabolites for food, environmental, and toxicology/forensic analyses are available. Products are available as neats and singl...

QuEChERS Method for Pesticide Residue Analysis

QuEChERS significantly improves laboratory efficiency and throughput. This procedure requires only small quantities of solvent and is capable of generating recoveries of 70-120% with RSDs <5% for a wide range of compounds. A process in two steps: • Solvent extraction techniques are designed to achie...

HPLC Analysis of Carbamate and Urea Pesticides

sample/matrix: 3 mL water containing 8ng/mL of each analyte in 10% NaCl SPME fiber: PDMS/DVB, 60 μm (57317) extraction: immersion, 40 min, rapid stirring desorption process: static, 5 min in acetonitrile:water (65:35); dynamic, valve open during run column: SUPELCOSIL LC-8, 15 cm × 4.6 mm I.D., 5 µm...

Approaches to the Analysis of the Oregon List of Pesticides in Cannabis Using QuEChERS Extraction and Cleanup

Consumption of cannabis and / or cannabis-based products is currently legal in some form in 33 US states plus the District of Columbia. Testing of the plant materials and products is required by many of these states; however the specific test methods and target compound lists are not mandated in all...

Improve Recovery for Analysis of Pesticides in Beef Kidney

The exposure of farm animals to agricultural pesticides continues to be a major concern among food producers. For example, in the case of organochlorine pesticides, although their use has been severely restricted by many countries, they can still be detected at low levels in some agricultural produc...

Increase Removal of Fat & Pigments From Avocado Prior to GC-MS Analysis of Pesticide and Metabolite Residues

The health benefits of avocado are associated with its high content of healthy fat, fiber, vitamins, and minerals. Avocado consumption in the United States has steadily grown, with sources of the fruit being both domestic and imported1. The fat content of avocado is typically in the range of 10-15%,...

Extraction of Planar Pesticides from Spinach and Fresh Oregano Using QuEChERS Methodology With a Novel Carbon Adsorbent

Related Products • Food & Beverage Analysis • Pesticide Analysis • QuEChERS Bulk Adsorbents and Salts Related Articles • Reporter US Volume 34.2 • Analysis of Pesticides in Turmeric Powder by LC/MS/MS • Extraction of Permethrin Pesticides from Spinach Using QuEChERS Methodology with Automated Shakin...

Recovery & Sample Cleanup of Pesticides in Spinach Using Supelclean ENVI-Carb-II/PSA SPE

Related Articles • Extraction of Permethrin Pesticides from Spinach Using QuEChERS Methodology with Automated Shaking • Extraction and Analysis of Neonicotinoid Pesticides from Flower Blossoms • Rapid Cleanup of Spinach Extracts Using Gravity Elution SPE Prior to Pesticide Analysis • Increase Remova...

Extraction of Permethrin Pesticides from Spinach Using QuEChERS Methodology with Automated Shaking

Related Articles • Reporter US Volume 33.1 (4 Mb PDF) • Rapid Cleanup of Spinach Extracts Using Gravity Elution SPE Prior to Pesticide Analysis • Recovery & Sample Cleanup of Pesticides in Spinach Using Supelclean ENVI-Carb-II/PSA SPE • Extraction and Analysis of Neonicotinoid Pesticides from Flower...

Agricultural Contaminants - Pesticide Classes & Exposure Hazards

(back to Agricultural Contaminants) Most pesticides contain an active ingredient or agent, synergists, solvents for dispersion and stabilization and adjuvants. Synergists enhance the killing power of the chemical agent. Adjuvants are additional additives, which may give many pesticides their competi...

Improved Recoveries and Lower Background for GC/MS/MS and LC/MS/MS Analysis of Pesticides in Green Tea

Related Products • Food & Beverage Analysis • Supelclean™ Ultra SPE Related Articles • Reporter US Volume 34.4 • Robustness of the Discovery® HS F5 HPLC Column in the Study of Metabolomics • Reaching the “Peak” of Recovery: Improving Antibody Separations with the Inclusion of Organic Alcohols • Rapi...

Analysis of Pesticides in Spaghetti Sauce

In 2014, overcoated (OC) SPME fibers were introduced for use in immersion extractions. Studies using these fibers have shown them to be more amenable to different matrices than standard non-overcoated (non-OC) fibers. Some advantages exhibited by OC fibers are increased method precision, fiber life,...

Dual Column Analysis of Organochlorine Pesticides Using SLB-5ms and SPB-608

Katherine Stenerson Senior Applications Chemist The analysis of low levels of organochlorine pesticides by US EPA Method 8081 demands the use of an electron capture detector (ECD), which is highly sensitive, and capable of detecting analytes at picogram levels. The highly sensitive nature of an ECD,...

Neonicotinoids Pesticides and Metabolites

Ingrid Hayenga, Senior Chemist R&D Europe ingrid.hayenga@sial.com In spring 2008, a mass death of bees in Germany’s Baden-Württemberg state was reported. The German Federal Office of Consumer Protection and Food Safety (BVL) acted promptly, ordering the immediate suspension of the approval for eight...

Cleanup of Spinach Extracts Prior to Pesticide Analysis

Prior to analysis for pesticide residues, extracts of highly pigmented foods, such as spinach, require a cleanup step for removal of matrix materials. Failure to do so can lead to ion suppression in LC-MS, inlet contamination in GC-MS, and column contamination for both techniques. A dual-layer SPE t...

Multilayer SPE Tubes for Pesticide Analysis

The multi-residue surveillance of pesticides in agricultural products (fruits, vegetables, meat, shellfish, grains, and dairy products) is an ongoing project for regulatory agencies, contract laboratories, and industrial laboratories worldwide. Hundreds of thousands of samples are analyzed annually ...

Pesticides

Sigma-Aldrich's Cerilliant brand offers an extensive line of pesticides certified reference standards for various applications. We supply single-component Snap-N-Shoot® solutions and reference materials of numerous pesticides and metabolites for use in methods such as EPA Method 1699. Our multi-comp...

A New Approach for the Detection of Acidic Pesticides in Water by MS

Increasing the Sensitivity in Pesticide Analysis by Paired-Ion ESI Detection In previous publications, di- and tri-cationic ion-pair reagents were used to detect inorganic compounds, such as chlorides and sulfates [1-2]. A recent publication by C. Xu et al [3] demonstrates the versatility of such io...

Pesticides & Metabolites Standards - Analytical Standards

Sigma-Aldrich offers a comprehensive portfolio of pesticides standards and CRMs. Under the well-known brands PESTANAL and TraceCERT more than 1300 high purity pesticides and pesticide metabolites for food, environmental, and toxicology/forensic analyses are available. Products are available as neats...