Tin concentrations in river / bay sediments of Tokyo in 1984 and 2000
Open Access
- 1 October 2002
- journal article
- research article
- Published by Taylor & Francis Ltd in Soil Science and Plant Nutrition
- Vol. 48 (5), 667-672
- https://doi.org/10.1080/00380768.2002.10409255
Abstract
To analyze in greater detail the fate and behavior of toxic organotin compounds in the environment, total tin (Sn) concentrations were determined for sediments of the Arakawa River, the Sumida River, and Tokyo Bay by using a graphite furnace atomic absorption spectrophotometer (GFAAS). Sn concentrations in 2000 were compared with those of 1984 (8 years before the regulation on tributyltin-based antifouling paint) as well as with other heavy metals (Cu, Ni, Pb, and Zn). The Sn concentrations ranged from 1.04 to 4.43 mg kg−1 for sediments sampled in 2000. Although the average concentration of Sn in the sediments was low compared with that of 1984, the concentration tended to increase at several sites in 2000. Moreover, the Sn concentration showed significant correlations with the Cu, Ni, Pb, and Zn concentrations. These results suggest that a significant proportion of the overall Sn content in these sediments was probably introduced from the sources other than antifouling paint. The metals extracted from air-dried sediments with 0.1 m HCl showed that the mobility and bioavailability of Sn was low compared with those of other heavy metals.Keywords
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