ISSN:
1573-2983
Keywords:
Floodplain
;
speciation
;
heavy metal
;
sediments
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Medicine
Notes:
Abstract A five-step sequential extraction technique was used to determine the chemical association of heavy metals (Pb, Zn, Cu and Cd), with major sedimentary phases (exchangeable, surface oxide and carbonate, Fe and Mn oxides, organic and residual metal ions), in samples from floodplain and recent flood sediments of the River Aire, West Yorkshire. Analysis indicates that metals Pb and Zn are primarily associated with the Fe and Mn oxides, Cu with the organic fraction and Cd with exchangeable and surface oxide and carbonate metal ions. Knowledge of the chemical speciation of heavy metals in river sediment, despite the procedure's inherent limitations, facilitates an understanding of their bioavailability, storage and remobilisation in floodplain and river channel environments.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1006541724394
