pesticides

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Showing 1-30 of 296 results for "pesticides" within Site Content

Neonicotinoids Pesticides and Metabolites

Sigma-Aldrich.com presents an article concerning Neonicotinoids Pesticides and Metabolites.

Pesticides and Mycotoxins in Cannabis/Hemp

Stringent quality testing for cannabis products includes analysis for residual pesticides and mycotoxins using LC-MS/MS and GC-MS/MS.

GC Analysis of Agricultural Pesticides (Standard) on SLB®-5ms

Pesticide Standards

We offer a complete range of pesticide reference material standards with a variety of quality grades such as analytical standard grade (PESTANAL®), reference material or certified reference material (TraceCERT®) grade for food, environmental analyses.

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

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

Supel™ QuE Verde combines a novel carbon with zirconia coated silica (Z-Sep+) to provide an optimum balance between planar pesticide recovery and color removal.

HPLC Analysis of Urea, Carbamate, Triazine, Aniline Pesticides on Discovery® C18

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

Pesticide Classes and Exposure Hazards

Pesticide classes and health hazards from exposure to commercially available pesticides, herbicides, and fungicides.

US EPA Method 8081: GC Analysis of Organochlorine Pesticides on Equity®-5

Reduce Matrix Background and Improve Overall Analyte Recovery for the Analysis of Pesticides in Beef Kidney

Supel QuE Z-Sep+ was successfully demonstrated for cleanup of beef kidney matrix, providing reduced background and less interference in the GC-MS analysis of the target pesticides

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

A direct immersion SPME method using a new overcoated SPME fiber was developed for the extraction of pesticides from pureed prune baby food.

QuEChERS Method for Pesticide Residue Analysis

QuEChERS method for pesticide residue analysis requires only small quantities of solvent and is capable of generating recoveries of 70-120% with RSDs <5% for a wide range of compounds.

Extraction and Analysis of Neonicotinoid Pesticides from Flower Blossoms Using Supel™ QuE and Ascentis® Express

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

A procedure for cleanup of green tea extracts provides low background and allowed for the analysis of more pesticides at lower levels than QuEChERS. Uses less solvents and no toluene.

US EPA Method 632: HPLC Analysis of Pesticides on Ascentis® C18

-methylcarbamate 10 μg/mL; Diuron; Propham; Siduron; Methiocarb, analytical standard; Linuron 10 μg/mL; Swep 10 μg/mL; Chlorpropham 10 μg/mL; Barban; Neburon

Foodborne Pesticide Analysis: Going Beyond the Dirty Dozen

Get a better understanding of the various global regulations around pesticide analysis in food science and the right product for each method. Discover pesticide residue tests and applications from Fipronil for eggs to pesticides in cannabis.

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

The primary column is used to determine presence of the target analytes in the sample; the secondary column of a different selectivity confirms whether a positive match.

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

Pesticide residue testing of turmeric and other (dried) spices is challenging due to their complex compositions and high matrix. An efficient SPE clean-up can be achieved by a new Dual-layer cartridge.

Pesticide Standards For Food & Environmental Analysis

Analytical Standards & Certified Reference Materials

LC/MS/MS Analysis of Neonicotinoid Pesticides in Dandelion Blossoms on Ascentis® Express C18 after Dispersive SPE (QuEChERS) using Supel™ QuE

Chiral Separation of the Pesticide Diniconazole by Supercritical Fluid Chromatography (SFC)

Diniconazole is a pesticide commonly used as a fungicide to prevent various plant diseases. It is a chiral compound that exists as a pair of enantiomers. This article describes the use of ChromegaChiral™ columns in resolving the two diniconazole enantiomers

US EPA Method 8141: GC Analysis of Organophosphorus Pesticides (OP-Pest) on Equity®-5, NPD Detection

analytical standard; Tokuthion, technical grade, pkg of 50 mg; Crotoxyphos; Phorate; Azinphos-ethyl; Diazinon; Azinphos-methyl; Demeton-O; Dimethoate; Chlorpyrifos-methyl

New Preparation Approach for Improved Pesticide Analysis of Challenging Samples

This webinar will introduce new sample preparation approaches leading to improved clean-up and recovery of pesticides in these challenging matrices.

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

Compared to conventional PSA/C18/GCB cleanup, cannabis extracts cleaned with the Supel QuE Verde mixture showed lower GC/MS background, and better recoveries for many pesticides.

Increase Removal of Fat and Pigment from Avocado Extracts Prior to GC-MS Analysis of Pesticide and Metabolite Residues

Supelco's Z-Sep+ sorbent effectively removes fat and pigment interferences from avocado, with good pesticide recoveries; it removes more matrix than traditional PSA/C18 sorbent, and produces a lower background for GC-MS analysis.

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

The odor and pungency of ginger is due to the presence of terpenes, gingerols and shogaols. These compounds contribute to the highly complex matrix of ginger, which subsequently presents a challenge in low level analyses of contaminants. A novel 2-layer

LC/MS/MS Analysis of Pesticide Residues in Pistachios on the Ascentis® Express RP-Amide Column after QuEChERS Extraction

Improve Pigment Removal and Decrease Matrix Interferences for Pesticide Determination in Oranges Using Supel QuE Z-Sep/C18 QuEChERS Sorbent

The comparison of Supel™ QuE Z-Sep/C18, PSA/C18, and PSA QuEChERS sorbents, in terms of color removal and analyte recovery, is described for the cleanup of oranges prior to pesticide analysis.

Analysis of Pesticide Residues in Pistachios Using QuEChERS Extraction and Cleanup with Supel™ QuE Z-Sep+

Pistachios contain approximately 45% fat, which can result in a significant amount of coextracted matrix in the acetonitrile extract generated using the QuEChERS procedure. A zirconia based adsorbent significantly reduces coextracted matrix prior to LC-MS or GC-MS.

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