Determination of Acidic Pesticides in the Drinking Water of Greece Using Capillary Gas Chromatography-Mass Spectrometry

被引:0
|
作者
Despina Tsipi
Anastasia Hiskia*
Thomas Heberer
Hans-Jurgen Stan
机构
[1] General Chemical State Laboratory,Institute of Food Chemistry
[2] Institute of Physical Chemistry,undefined
[3] NCSR Demokritos,undefined
[4] Technical University of Berlin,undefined
来源
Water, Air, and Soil Pollution | 1998年 / 104卷
关键词
acidic herbicides; drinking water; gas chromatography-mass-spectrometry (SIM); solid phase extraction;
D O I
暂无
中图分类号
学科分类号
摘要
There is no data currently available on acidic pesticides in the drinking water of Greece, although considerable quantities of them are in use. In this study, the occurrence of the six most important acidic herbicides in the drinking water of Greece was investigated. The target compounds studied include four chlorophenoxy herbicides, namely mecoprop, dichlorprop, MCPA and 2,4-D, and two other acidic herbicides, i.e. bromoxynil and bentazone. Analysis was carried out at a concentration level of 100 ng L−1 using capillary gas chromatography-mass spectrometry (GC-MS) with selected ion monitoring (SIM). The method involved a pre-concentration with solid phase extraction and derivatization with pentafluorobenzyl bromide. Thirty-eight samples of drinking water from nine regions in Greece were screened. No herbicides were detected although fortification experiments with parallel water samples resulted in recovery rates better than 70%. The detection limits of the recovered compounds were found to be between 10 and 50 ng L−1.
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页码:259 / 268
页数:9
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