Determination of trace arsenic(III) by differential-pulse anodic stripping voltammetry with in-situ plated bismuth-film electrode |
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Authors: | Jiajie Long |
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Affiliation: | Department of Applied Chemistry and Biotechnology , Graduate School of Engineering, University of Fukui , Bunkyo, Fukui 910-8507, Japan |
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Abstract: | Abstract A systematic survey of the quality status of the main aquifers in rural areas of Catalonia (Spain) regarding pesticide pollution has been carried out. A total number of 139 wells, distributed among 13 different hydrogeological units have been sampled and analyzed by GC-MS and GC-ECD, during the period 1997—98. Pesticides monitored were selected among triazine herbicides, organochlorine and organophosphorus insecticides. A positive presence of pesticides has been detected in 84.2% of the samples analyzed, 23.7% of them exceeding the requirements of the EU drinking water Directive (98/83/CE). Organochlorine insecticides were present in 62.6% of the samples, triazines in 49% and organophosphorus insecticides in 28.8%. The results obtained have been interpreted by Principal Component Analysis. |
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Keywords: | As(III) determination In-situ plating Bismuth Basal-plane pyrolytic graphite DPASV |
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