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Determination of traces of pesticides in water by solid-phase extraction and liquid chromatography–ionspray mass spectrometry

Authors
Journal
Journal of Chromatography A
0021-9673
Publisher
Elsevier
Publication Date
Volume
777
Issue
1
Identifiers
DOI: 10.1016/s0021-9673(97)00431-7
Keywords
  • Pesticides

Abstract

Abstract A multi-residue analytical method for six pesticides (atrazine, hydroxyatrazine, carbofuran, promecarb, linuron and monolinuron) in drinking water has been developed. The method combines liquid chromatography and mass spectrometry using an ionspray interface. The linearity domain, as well as the limits of detection and quantification, were determined for each compound. Although satisfactory performance could be achieved, present drinking water regulations (0.1 μg l−1 for single pesticide) requires a pre-concentration step. This was performed using solid-phase extraction with octadecyl-bonded silica cartridges. The analytical procedure was tested on water samples spiked at the 0.04 and 0.08 μg l−1 levels, and allowed the determination of the investigated pesticides (except hydroxyatrazine) at these trace concentrations.

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