Search: Pesticides, Application Note

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EPA Method 548.1 Endothall

Method 548.1 is used to determine Endothall in drinking water sources and finished drinking water sources. The analytes are extracted from water using a 47mm Anion Exchange disk. The disk is extracted with ...

Resource - Susan Gilbert - 27th Sep 2011 - 0 comments

Automated QuEChERS Extraction for the Determination of Pesticide Residues in Foods using Gas Chromatography/Mass Spectrometry

One of the most important aspects of reducing pesticide exposure is monitoring of pesticide residues in foods. A number of analytical methods have been developed, many of them based on traditional liquid-liq ...

Resource - Susan Gilbert - 13th Sep 2011 - 0 comments

EPA Method 515.2 Chlorinated Acids

Method 515.2 is used to determine chlorinated acids in ground water and finished drinking water. Salts and esters are hydrolysed to the corresponding acid before the analysis. The analytes are extracted fro ...

Resource - Susan Gilbert - 4th Jul 2011 - 0 comments

EPA Method 508.1 Chlorinated Pesticides, Herbicides and Organohalides

Method 508.1 is used to determine twenty-nine chlorinated pesticides, three herbicides and four organohalides in drinking water, ground water and drinking water in any treatment stage. The analytes are extra ...

Resource - Susan Gilbert - 4th Jul 2011 - 0 comments

Six Times Faster Screening of Pesticide Multi-Residues in Aqueous Samples

SBSE can be performed in parallel on two aliquots of the same sample under different extraction conditions using two Twisters. Using this dual Twister approach, the two extractions can be optimized individua ...

Resource - Susan Gilbert - 27th Apr 2011 - 0 comments

Multi-Residue Analysis of Pesticides in Samples of Lettuce and Peas Using Large Volume-Difficult Matrix Introduction-Gas Chromatography-Mass Spectrometry (LV-DMI-GC-MS)

Ethyl acetate is widely used as a solvent for the multi-residue extraction of pesticides from foods because it provides acceptable recovery over a wide range of polarity. Prior to GC analysis of the extracts ...

Resource - Susan Gilbert - 18th Apr 2011 - 0 comments

GCxGC-TOFMS and the Pegasus 4D for the Analysis of Pesticides in a Tobacco Extract

The Pegasus III combines time-of-flight mass spectrometry with ChromaTOFTM software to produce an instrument capable of reducing analysis times (both data processing as well as run times), locating target and ...

Resource - Susan Gilbert - 15th Apr 2011 - 0 comments

High Throughput Multi-Residue Screening of Drinking Water using the SPE-DEX and Pegasus GC-ToFMS

In cases of water contamination, an important objective for the water industry is to decrease turn around times of samples and increase capacity. Traditional techniques involve the liquid-liquid extraction ( ...

Resource - Susan Gilbert - 15th Apr 2011 - 0 comments

The Analysis of Red List OP Pesticides in Food by DMI-GC-TOF-MS

The analysis of target compounds in food substances is usually very difficult, matrices containing fats can be even trickier. The process of extraction and clean-up of the sample can lose target analytes or ...

Resource - Susan Gilbert - 15th Apr 2011 - 0 comments

Fully Automated QuEChERS Clean-up and LC/MS-QQQ Analysis of Pesticides in Fruits and Vegetables

This application note describes a fully automated method based upon the widely used QuEChERS (quick, easy, cheap, effective, rugged and safe) methodology, for the extraction and clean-up of pesticide residues ...

Resource - Susan Gilbert - 15th Apr 2011 - 0 comments