Detection of pesticides and pesticide metabolites using the cross reactivity of enzyme immunoassays

Enzyme immunoassay is an important environmental analysis method that may be used to identify many pesticide analytes in water samples. Because of similarities in chemical structure between various members of a pesticide class, there often may be an unwanted response that is characterized by a perce...

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Bibliographic Details
Published inJournal of AOAC International Vol. 84; no. 1; p. 162
Main Authors Thurman, E M, Aga, D S
Format Journal Article
LanguageEnglish
Published England 01.01.2001
Subjects
Acetamides - analysis
Atrazine - analysis
Biotransformation
Chromatography, High Pressure Liquid
Cross Reactions
Fresh Water - analysis
Gas Chromatography-Mass Spectrometry
Herbicides - analysis
Immunoenzyme Techniques
Indicators and Reagents
Mass Spectrometry
Pesticide Residues - analysis
Pesticides - analysis
Prometryne - analysis
Sulfonic Acids - analysis
Triazines - analysis
Water Pollutants, Chemical - analysis
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Summary:Enzyme immunoassay is an important environmental analysis method that may be used to identify many pesticide analytes in water samples. Because of similarities in chemical structure between various members of a pesticide class, there often may be an unwanted response that is characterized by a percentage of cross reactivity. Also, there may be cross reactivity caused by degradation products of the target analyte that may be present in the sample. In this paper, the concept of cross reactivity caused by degradation products or by nontarget analytes is explored as a tool for identification of metabolites or structurally similar compounds not previously known to be present in water samples. Two examples are examined in this paper from various water quality studies. They are alachlor and its metabolite, alachlor ethane sulfonic acid, and atrazine and its class members, prometryn and propazine. A method for using cross reactivity for the detection of these compounds is explained in this paper.
ISSN:1060-3271