Abstract
To avoid systematic errors in the sampling and determination of mercury in seawater an integrated sampling-analyzing system has been developed. A 500 ml PTFE-bottle attached to a sampling gear is used as sampling vessel for the cold vapour atomic absorption Spectrophotometry, using nitrogen aeration, SnCl2 reduction, and preenrichment/ purification by amalgamation on finely dispersed gold. The detection limit of this procedure was found to be 0.5 ng·l−1 and the coefficient of variation 4% for 1.5 ng·l−1.
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