Sequential stir bar extraction, thermal desorption and retention time locked GC-MS for determination of pesticides in water.
A method based on sequential stir bar sorptive extraction followed by automated thermal desorption-GC-MS for the determination of pesticides in underground and superficial water samples has been developed. Retention time locked GC-MS and deconvolution Automated Mass Spectral Deconvolution and Identification System software allows the use of pesticide databases for identification and quantification in routine applications. Quantitation limits and repetitivity using full scan mass spectrometric determination guarantee the applicability of the method, which enables considerable savings to be made in total analysis time, with data processing times of around 2 min/sample.
Faculty of Pharmacy, Department of Analytical Chemistry, University of the Basque Country, Vitoria-Gasteiz, Spain.
M Carmen
MC
Sampedro
M Aranzazu
MA
Goicolea
Nora
N
Unceta
Alicia
A
Sánchez-Ortega
Ramón J
RJ
Barrio
D005618:Fresh Water / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry / Q000295:instrumentation / Q000379:methods*; D010573:Pesticide Residues / Q000032:analysis; D010575:Pesticides / Q000032:analysis*; D012984:Software; D013030:Spain; D014867:Water / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000032:analysis
D010573:Pesticide Residues; D010575:Pesticides; D014874:Water Pollutants, Chemical; D014867:Water