Seasonal variation and partition of trace metals (Fe, Zn, Cu, Mn, Cr, Cd and Pb) in surface sediments: relationship with physico-chemical variables of water from the Calabar River, South Eastern Nigeria

被引：0
作者：
B.O. Ekpo
U.J. Ibok
机构：
[1] University of Calabar,Chemistry Department
来源：
Environmental Geochemistry and Health | 1998年 / 20卷
关键词：
Trace metal; partitioning; physico-chemical parameters; Calabar River; sediments;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The seasonal variation and partition of trace metals (Fe, Cu, Zn, Mn, Cd, Cr and Pb) in the surface sediments of the Calabar River are reported. Chemical partition of the metals in the sediments reveals that 2–30% of the total metal load was contributed by the non-detrital (acid-soluble) fraction, while fine-grained host minerals/compounds are the main carriers of the detrital (acid-insoluble) fraction (70–98%). Using multivariate statistical analysis, the seasonal fluctuations in the distribution of some of the metals show significant influence by physio-chemical changes (dissolved oxygen, pH, salinity and conductivity) in the water column. Fe–Mn oxide grain coatings and sulphide materials have been identified as scavengers of some of the non-detrital and detrital trace metals in the sediments. On the basis of index of geoaccumulation (I-geo) and comparison with previous studies, the Calabar River surface sediments have been classified as unpolluted.
引用
收藏
页码：113 / 121
页数：8
相关论文
共 42 条
  • [1] Boyle R. W.(1965)Geology, geochemistry and origin of the lead-zinc deposits of the Keno Hill-Galena Hill area, Yukon Territory Geological Survey of Canada Bulletin 111 302-8066
  • [2] Boyle E. A.(1981)On the distribution of copper, nickel and cadmium in the surface waters of the North Atlantic and North Pacific Ocean Journal of Geophysical Research 89 8048-179
  • [3] Huested S. S.(1983)Heavy metals in pal estuary, Cornwell: a study of long-term contamination by mining waste and its effects on estuarine organisms Marine Biological Association UK 2 112-35
  • [4] Jones S. P.(1980)Oceanographic distribution of cadmium, zinc, nickel and copper in North Pacific Earth and planetory science Letters 47 176-269
  • [5] Bryan W. G.(1971)Three geochemical standards of sulphide bearing ultramatic rock: Geological Survey of Canada Papers 10 71-472
  • [6] Gibbs P. E.(1979)Lead-210 chronology in relation to levels of elements in dated sediments core profiles Estuary and Coastal Shelf Science 8 259-333
  • [7] Bruland K. W.(1991)Seasonal variation of metals (Hg, Pb As) in the body tissue of Egeria (Lum) (Bivalvia, Tellinacea: Donacidac) from the Cross River, Nigeria Journal of African Zoology 105 465-11870
  • [8] Cameron E. M.(1991)Temporal trends in heavy metal concentrations in the Clam Egeria radiator (Bivalvia: Tellinacea: Donacidac) from the Cross River, Nigeria Review of Hydrobiology in the Tropics 24 327-387
  • [9] Clifton R. J.(1962)The geochemistry of modern sediments from the gulf of Paria-II. The location and distribution of trace elements Geochemica et Cosmochimica Acta 26 1147-971
  • [10] Hamilton E. I.(1968)Controls on Mn, Fe, Co, Ni, Cu and Zn concentrations in soils and water, the significant role of hydrous Mn and Fe oxides American Chemical Society, Advanced Chemical Series 73 337-1718
12345