Summary
Gas chromatography (GC) with nitrogen-phosphorus detection (NPD) and mass spectrometry (MS), in full scan and tandem (MS-MS) modes have been used to determine eleven pesticides in aqueous samples. Preconcentration of 500 mL water with C18 cartridges enabled the determination of pesticides at ng L−1 levels. The best precision and sensitivity were obtained from GC-NPD and GC-MS-MS. The limits of detection were between 4 and 44 ng L−1 for NPD and 1 and 40 ng L−1 for MS-MS. The application of this methodology to the determination of pesticides in real samples was tested by analyzing wetland samples from province of Almería (Spain). The results obtained were compared and the advantage of MS-MS over NPD for highly selective quantitative determination of pesticides in complex matrices is discussed.
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Frenich, A.G., Martínez Vidal, J.L., Pablos Espada, M.C. et al. Comparison of gas chromatography with NPD, MS, and tandem MS-MS in the multiresidue analysis of pesticides in environmental waters. Chromatographia 52, 614–620 (2000). https://doi.org/10.1007/BF02789761
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DOI: https://doi.org/10.1007/BF02789761