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Sequential stir bar extraction, thermal desorption and retention time locked GC–MS for determination of pesticides in water
Author(s) -
Sampedro M. Carmen,
Goicolea M. Aranzazu,
Unceta Nora,
SánchezOrtega Alicia,
Barrio Ramón J.
Publication year - 2009
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.200900383
Subject(s) - thermal desorption , chromatography , deconvolution , mass spectrometry , chemistry , detection limit , extraction (chemistry) , gas chromatography–mass spectrometry , bar (unit) , desorption , retention time , pesticide , analytical chemistry (journal) , sample preparation , gas chromatography , computer science , adsorption , algorithm , physics , organic chemistry , meteorology , agronomy , biology
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.