Determination of priority pesticides in water samples combining SPE and SPME coupled to GC?MS. A case study: Suquía River basin (Argentina)

BONANSEA, ROCÍO; AMÉ, MARÍA VALERIA; WUNDERLIN, DANIEL ALBERTO

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2013 vol. 90 p. 1860 - 1860

p class="MsoNormal" style="line-height: 200%; margin: 0cm 0cm 0pt;">This study reports a combined method using solid phase extraction (SPE), followed by solid phase microextraction (SPME) to concentrate different pesticides, including  chlorinated, organophosphorus, triazines, pyretroids and chloroacetamides, present at trace levels in water samples. Identification and quantification was carried out by gas chromatography coupled to Mass Spectrometry (GC?MS). The optimized methodology showed LOQs at ng L−1 levels (ranging 0.2 to 3.5 ng L−1) in addition to acceptable precision and robustness (recoveries ranged 63 - 104%, RSD from 4 % to 23 %). The