Anodic adsorptive stripping voltammetric determination of atrazine in spiked soil samples with a gold microelectrode

被引：10
作者：
Morais, S [1 ]
Tavares, O [1 ]
Baptista-Paíga, PC [1 ]
Delerue-Matos, C [1 ]
机构：
[1] Inst Politecn Porto, Inst Super Engn, Requimte, Dept Engn Quim, Oporto, Portugal
来源：
ANALYTICAL LETTERS | 2004年 / 37卷 / 15期
关键词：
atrazine; gold microelectrode; anodic adsorptive stripping; voltammetry; spiked soil samples;
D O I：
10.1081/AL-200040352
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Microwave-assisted solvent extraction was combined with anodic adsorptive Stripping voltammetry at a gold microelectrode to extract and quantify the herbicide atrazine in spiked soil samples. A systematic study of the experimental parameters affecting the stripping response was carried out by square-wave voltammetry. The voltammetric procedure is based on controlled adsorptive accumulation of atrazine at the potential of 0.35 V (versus Ag/AgCl) in the presence of Britton-Robinson buffer pH (2.0). The limit of detection obtained for a 30 sec collection time was 4.3 x 10(-7) mol L-1. Recovery experiments, at the 1 mug g(-1) level of spiking, gave good results for the global procedure, and the values found were comparable to those obtained by HPLC.
引用
收藏
页码：3271 / 3286
页数：16
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