期刊
MARINE POLLUTION BULLETIN
卷 88, 期 1-2, 页码 224-230出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2014.08.040
关键词
Copper and nickel speciation; Mangrove sediment; Speciation and bioavailability; Kinetic speciation; Single extraction method
资金
- NIO, Goa
- UGC
- CSIR
- GEOSINKS [PSC0106]
An attempt was made to establish a mechanistic linkage between chemical speciation of copper and nickel, and their bioavailability in mangrove ecosystem. Kinetic speciation study was performed to determine the concentrations of labile metal-complexes and their dissociation rate constants in mangrove sediments. Concentrations of copper and nickel in the mangrove roots were used as indicators of their bioavailability. It was found that the bioaccumulation of both the metals gradually increased with the increasing concentrations of the labile metal complexes and their dissociation rate constants in the mangrove sediments. This study shows that concentration of labile metal (copper and nickel) complexes and their dissociation rate constants in mangrove sediment can be a good indicator of their bioavailability. (C) 2014 Elsevier Ltd. All rights reserved.
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