8 Articles found
Sigma-Aldrich Articles
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Analysis of Aflatoxin B1, B2, G1, and G2 in Corn Meal, Wheat Meal, and Raw Peanut Paste Matrices
The Supel Tox AflaZea SPE cartridge was used to demonstrate the cleanup of corn meal, wheat meal, and raw peanut paste matrices prior to the analysis of Aflatoxin B1, B2, G1, and G2. In the procedure, corn meal, wheat meal, and raw peanut paste ...
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Optimization of SPE Cleanup Method for the Analysis of Nitroimidazoles in Egg and Milk Samples
In this application, Molecularly Imprinted Polymers (MIP) SPE methodology was applied to the analysis of nitroimidazoles in eggs. We have evaluated the method and further improved the solid phase extraction protocol to achieve better sample ...
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Improved Recovery of the Fungicide Carbendazim from Various Orange Juice Matrices by Employing QuEChERS Cleanup
Fungicide carbendazim can sometimes be used to combat mold on citrus fruits including oranges. Recently, low residue levels of the fungicide were reported to be present in the bulk orange juice import shipments to the USA. Because this compound can ...
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Ascentis™ C18 for the Analysis of Urea Pesticides
Application Report 210 Analysis of Urea Pesticides Using Ascentis™ C18 This application demonstrates the suitability of the Ascentis C18 for the analysis of urea pesticides, utilizing isocratic conditions and UV detection. Compounds analyzed ...
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Analysis of Agricultural Pesticides in Wine by GC
This application demonstrates the usefulness of SPME in the low-level extraction of agricultural pesticides from wine, and the use of the SLB-5ms in the subsequent analysis. The pesticides chosen for the analysis represent a group of insecticides ...
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Analysis of the Herbicide Triazines Using Ascentis™ C18
This application demonstrates the suitability of the Ascentis C18 for the analysis of the herbicide triazines simazine, cyanazine, and atrazine. An Ascentis C18, 15 cm x 4.6 mm I.D., 5 μm particles was used under isocratic mobile phase ...
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Field Sampling for Pesticides, Using Solid Phase Microextraction/Capillary GC
An SPME portable field sampler can be used to extract analytes from samples in the field, then store them for up to 3 days, or longer, before performing the analysis. A field sampler with a 100µm polydimethylsiloxane-coated fiber extracts ...
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Capillary GC Analyses of Triazine Pesticides in Dry Pet Food
Based on federal and state regulations for identifying and quantifying low levels of pesticides in food and environmental samples, we selected three capillary columns to screen for triazine pesticides. A nonpolar and two low/intermediate polar ...