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Issue 6, 1995
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Use of a solid phase extraction method for the analysis of pesticides in groundwater by gas chromatography with electron capture and flame photometric detectors

Abstract

Organophosphorous, organochlorine and electron-capture sensitive pesticides were extracted from water in a single step using a C18 solid phase extraction cartridge, eluted with ethyl acetate and isooctane and determined by GC with electron-capture and flame photometric detection. Analytical aspects of the method were studied with a linear regression model, including the linearity of the responses, repeatability and detection limits, which ranged from 3 to 35 µg l–1. The method of concentration employed did not contribute to a noticeable loss of the chemicals, with recoveries of over 90%, except for fenthion. The present method is applied to the analysis of 27 pesticides in groundwater, most of which are recovered at >70% efficiency which complies with the EPA criteria.

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Article type: Paper
DOI: 10.1039/AN9952001723
Analyst, 1995,120, 1723-1728

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    Use of a solid phase extraction method for the analysis of pesticides in groundwater by gas chromatography with electron capture and flame photometric detectors

    C. de la Colina, F. Sánchez-Rasero, G. D. Cancela, E. R. Taboada and A. Peña, Analyst, 1995, 120, 1723
    DOI: 10.1039/AN9952001723

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