Solid phase microextraction-high pressure liquid chromatographic determination of Nabam, Thiram and Azamethiphos in water samples with UV detection: preliminary data

Nabam, Thiram, and Azamethiphos are important agrochemicals and were analysed in agricultural water samples by extraction with solid phase microextraction coupled to HPLC with UV detection. The role of solid phase microextraction technique for the determination of these pesticides in water samples was investigated. Water samples spiked with these pesticides were preconcentrated using a polydimethylsiloxane (PDMS) fiber. Both dynamic and the static modes were tried and the static mode was found to give better recoveries and peak areas. The method enabled the determination of the pesticides at low concentrations with a limit of detection (S/N=3) is 1-10 ng/ml.