Comparison of different sorbents for solid-phase extraction of phenoxyalkanoic acid herbicides

被引：38

作者：

Biesaga, M ^{[1
]}

Jankowska, A ^{[1
]}

Pyrzynska, K ^{[1
]}

机构：

[1] Univ Warsaw, Dept Chem, PL-02093 Warsaw, Poland

来源：

MICROCHIMICA ACTA | 2005年 / 150卷 / 3-4期

关键词：

chlorophenoxy acid herbicides; solid-phase extraction; water analysis;

D O I：

10.1007/s00604-005-0359-y

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An HPLC procedure for determination of phenoxyalkanoic acid herbicides in water samples is proposed. The analytical column Phenomenex C18(2) Luna 5 mm and UV detection at 225 nm were applied. Baseline resolution was achieved in isocratic mode with a mobile phase consisting of acetonitrile/acetic acid (40/60, v/v), adjusted to pH 2.5. SPE sorbents - C-18 BondElut, phenyl-silica, LiChrolut SAX and polymeric sorbents - were compared for isolation and preconcentration of 6 phenoxyalkanoic acid herbicides. Higher (above 95%) and more reproducible recoveries were obtained with polymeric and phenyl-silica sorbents using pure methanol for elution. The method was tested for river water samples with the limit of detection in the range of 2-3 mu g L-1 (for 50 mL sample) and a reproducibility of 5% RSD.

引用

页码：317 / 322

页数：6

共 27 条

[1] Determination of pesticides and their degradation products in soil:: critical review and comparison of methods [J].