Sequential Injection Analysis with Square Wave Voltammetry (SI-SWV) Detection for Investigation of Adsorption of Picloram on a Clay Soil

Journal of the Brazilian Chemical Society

Luciana B. O. Dos Santos¹  Jorge C. Masini¹ 

关键词: herbicide;    voltammetry;    sequential injection;    picloram;   

DOI  :  10.5935/0103-5053.20150187

来源: SciELO

【 摘 要 】

This paper describes a sequential injection analysis method, with detection by square wave voltammetry using a hanging mercury drop electrode, to determine the herbicide picloram in soil extracts (0.010 mol L-1 CaCl2). The method was applied for determination of the Freundlich parameters related to adsorption of picloram on a tropical soil sample. The major advantage of the proposed method over the conventional chromatographic methods is the high sampling throughput of 190 analyses per hour, with detection and quantification limits of 0.036 and 0.12 mg L-1, respectively. The Kf (0.0016 ± 0.0005 µmol1-1/n L1/n kg-1) and 1/n (0.85 ± 0.06) obtained by the proposed method did not differ from those determined by liquid chromatography with UV detection.

【 授权许可】

CC BY   
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