Abstract
A new separation procedure was developed which solves problems of organic interferences in the analysis of mercury traces in environmental matrices using differential pulse anodic stripping voltammetry (DPASV). The separation combines the volatilization of metallic mercury and its absorption on Au-wool, followed by a quantitative anodic dissolution of the mercury into a pure electrolyte solution. This procedure prolongs the analysis time for about 2 min, but offers an interference-free determination of mercury using the standard DPASV method without deterioration of sensitivity and precision. The method was tested with plant reference material olive leaves (BCR No 62).
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Trittler, R., Schilcher, H. DPASV determination of mercury in plant material after a preliminary separation via gas phase and gold trap. Fresenius J Anal Chem 349, 659–660 (1994). https://doi.org/10.1007/BF00323475
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DOI: https://doi.org/10.1007/BF00323475