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Simultaneous determination of 64 pesticides in river water by stir bar sorptive extraction and thermal desorption-gas chromatography-mass spectrometry

Nakamura, Sadao ; Daishima, Shigeki

Analytical and bioanalytical chemistry, 2005-05, Vol.382 (1), p.99-107 [Revista revisada por pares]

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Título:
Simultaneous determination of 64 pesticides in river water by stir bar sorptive extraction and thermal desorption-gas chromatography-mass spectrometry
Autor: Nakamura, Sadao ; Daishima, Shigeki
Materias: Fresh Water ; Freshwater ; Gas Chromatography-Mass Spectrometry - methods ; Hydrogen-Ion Concentration ; Pesticides - analysis ; Reproducibility of Results ; Water Pollutants, Chemical - analysis
Es parte de: Analytical and bioanalytical chemistry, 2005-05, Vol.382 (1), p.99-107
Notas: ObjectType-Article-1
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Descripción: A method for determining 68 pesticides in river water using stir bar sorptive extraction (SBSE)-thermal desorption (TD)-gas chromatography-mass spectrometry (GC-MS) is described. SBSE sampling was optimized for sample solution pH, salting-out and methanol addition. Although salting-out enhanced the ability of the method to extract most of the pesticides with low absolute recoveries, the absolute recoveries of four pesticides were not improved by salting-out. The detection limits of the method for the pesticides ranged from 0.2 to 20 ng/l. Analyte recoveries from a river water sample spiked with standards at 10 and 100 ng/l were 58.5-132.0% (RSD: 1.8-15.8%) and 61.0-121.3% (RSD: 1.4-20.2%), respectively.
Editor: Germany
Idioma: Inglés

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