Abstract
To determine the reliability of an enzyme immunoassay (EIA) for atrazine, we collected water samples and analyzed them for herbicide content by both EIA and standard gas chromatography/mass spectrometry (GC/MS) techniques. The commercially available EIA uses antibodies linked to magnetic particles to determine sample atrazine concentrations and requires less than 2 h to analyze a run of 50 samples. The EIA was internally consistent with variation of less than 3% between 156 duplicate standards that were run to develop standard curves. For the 217 samples examined, atrazine concentrations measured by the two analytical techniques were highly correlated (r=0.96)
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