Internal standards in differential pulse anodic stripping voltammetry
Canadian Journal of Chemistry1991Vol. 69(4), pp. 755–758
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Abstract
The use of lead and cadmium as internal standards for each other in anodic stripping analysis was investigated. Although accuracy was not affected, precision was significantly improved. The surface active agents Triton-X 100 and starch affected the sensitivity of the anodic stripping procedure for lead and cadmium, leading to error if a calibration curve is used. Data for application of the procedure to the analysis of the marine biological reference material LUTS-1 and soil reference materials SO-2, SO-3, and SO-4 are provided. Key words: internal standard, anodic stripping voltammetry, calibration curve, standard addition, lead determination, cadmium determination.
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