Abstract

A direct atomic absorption spectrophotometric technique for the determination of total zinc in marine waters is described. The detection limit in a seawater matrix by this method is 2·10 -4 μg zinc, and 0.25-ml samples may be analysed without any pre-analysis preparation. Contamination problems are shown to be severe for zinc and initial attempts to evaluate the various chemical and physical forms present in natural water samples have had limited success.

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