LIMITED DOWNWARD MIGRATION OF POLLUTANT METALS (CU, ZN, NI, AND PB) IN ACIDIC VIRGIN PEAT SOILS NEAR A SMELTER

被引:37
作者
DUMONTET, S [1 ]
LEVESQUE, M [1 ]
MATHUR, SP [1 ]
机构
[1] AGR CANADA,LAND RESOURCE RES CTR,RES BRANCH,OTTAWA K1A 0C6,ONTARIO,CANADA
关键词
D O I
10.1007/BF00507072
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The distribution of pollutant heavy metals (Cu, Zn, Ni, Cd, and Pb) was determined in 11 acidic virgin peat profiles located along two transects moving away from a smelter plant in the Noranda region of Quebec. The levels of all five metals were found highest in the 0 to 15 cm layer at site near the smelter, and decreased progressively with the distance from the smelter, up to 42 km. Copper had the highest concentrations (5525 μg g-1) followed by Pb and Zn. The maximum levels of total metals built up in the peat surface near the smelter were high, approximately reaching the threshold limits for phytotoxicity in peat soils. The amounts of heavy metals moving down and accumulating in the anaerobic zone of the peat profiles were limited. The distribution and enrichment ratios in the profiles showed that Cu, Zn, and Cd would have relatively higher mobility than Pb. © 1990 Kluwer Academic Publishers.
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页码:329 / 342
页数:14
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