Analysis of organochlorine pesticides in water using headspace solid phase microextraction with gas chromatography and mass spectrometry

Quimica nova

Prates, Crislaine Batista¹  Ré-Poppi, Nilva¹  Gebara, Sâmya Soler¹ 

[1] Universidade Federal de Mato Grosso de Sul, Campo Grande, Brasil

关键词: organochlorine pesticides;    HS-SPME/GC-MS/MS.;   

DOI  :  10.1590/S0100-40422011000700026

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

A method based on headspace - solid phase microextraction coupled with gas chromatography - mass spectrometry was validated for the quantitative determination of 18 organochlorine pesticides in water. For the extraction conditioning some parameters as the best type of coating fiber, time and temperature of extraction, pH and ionic strength were evaluated. The method HS-SPME/GC-MS/MS showed linear coefficient above 0.9948. The repeatability of the measurements were lower than 7.6%. Relative recoveries were between 88 and 110%. Limits of detection from 0.5 x 10-3 to 1.0 mg L-1 were obtained. A total of 31 samples were analyzed and 16 presented from 1 to 5 pesticides.

【 授权许可】

CC BY