DETERMINATION OF PHENOXYALKANOIC ACIDS AND OTHER ACIDIC HERBICIDES AT THE LOW PPT LEVEL IN WATER APPLYING SOLID-PHASE EXTRACTION WITH RP-C-18 MATERIAL

被引：45

作者：

BUTZ, S ^{[1
]}

HEBERER, T ^{[1
]}

STAN, HJ ^{[1
]}

机构：

[1] TECH UNIV BERLIN,INST FOOD CHEM,D-13355 BERLIN,GERMANY

来源：

JOURNAL OF CHROMATOGRAPHY A | 1994年 / 677卷 / 01期

关键词：

D O I：

10.1016/0021-9673(94)80545-8

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A method for the determination of 34 phenoxyalkanoic acids and other acidic compounds in water samples was developed. Recoveries were made from 1 l of drinking water samples using solid-phase extraction (SPE). Different SPE materials and blends of octadecyl (RP-C-18) and phenyl (RP-Phe) were tested. After method optimization, 26 out of the 34 compounds could be extracted with recoveries better than 70% on the most suitable RP-C-18 material. The acidic compounds in the extract were derivatized with pentafluorobenzyl bromide and the resulting esters determined by capillary gas chromatography with mass selective detection employing selected-ion monitoring with time window programming. Detection limits between 1 and 10 ng/l were obtained with spiked drinking water samples. This method has been used successfully for the analysis of drinking and groundwater samples in field studies.

引用

页码：63 / 74

页数：12

共 33 条

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