The Concentrations of Cadmium, Lead and Copper in Filtrated Baltic Sea Water Samples Collected at Two Seasons in 1969
✍ Scribed by Gustavsson, I.
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- English
- Weight
- 460 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0323-4320
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✦ Synopsis
Two research cruises on the Baltic Sea, in July and Pu'ovember of 1979, were made for investigating the Baltic Sea water for its contents of dissolved cadniium, lead and copper. dtomic absorption spectrophotometry and voltammetry were used as methods of investigation, the latter method having supplied slightly lower results. I n the water layer of 0 ... 50 ni the cadmium concentrations were 0.03 ... 0.05 pg/l and the lead concentrations were 0.1 ... 0.2 pg/l, seasonal changes did not have any effect on them. The copper concentrations, on the other hand, were 0.4 ... 1.2 pg/l in summer and 0.1 ... 0.7 pg/l in autumn. Compared with ocean waters, the lead content is remarkably high. In anoxic deep waters of the Baltic Sea the concentrations of the three metals, especially t h a t of cadmium, are very low ( ~0 . 0 1 pg/l).