Analysis of seawater for dissolved cadmium, copper and lead

Bruland, K. W., Coale, K. H., & Mart, L. (1985). Analysis of seawater for dissolved cadmium, copper and lead: An intercomparison of voltammetric and atomic absorption methods. Marine Chemistry, 17(4), 285-300.
Metadata
TitleAnalysis of seawater for dissolved cadmium, copper and lead
AuthorsW. Bruland, H. Coale, L. Mart
AbstractAn intercomparison study of voltammetric and atomic absorption spectrometric methods for determining cadmium, lead and copper in seawater samples was conducted. The voltammetric approach utilizes differential pulse anodic stripping voltammetry using a rotating, glassy carbon, mercury film electrode under conditions developed to minimize contamination sources and to enhance sensitivity for seawater matrices. The atomic absorption approach involves a concentration step using either an organic solvent extraction of metal dithiocarbamate chelates or a Chelex-100 column with detection by graphite furnace atomic absorption spectrometry. Similar and consistent results were obtained using both methods for the three trace metals studied on a wide range of natural seawater samples. Both methods are comparable in sensitivity for cadmium and copper, however the voltammetric method is better suited for the analysis of lead in seawater because of its enhanced sensitivity and low blank. An advantage of the voltammetric approach is its amenability towards real-time shipboard analysis.
JournalMarine Chemistry
Date1985
Volume17
Issue4
Start page285
End page300

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