LEVELS OF HEAVY-METALS IN DATED SEDIMENTS FROM LINDISFARNE BAY, DERWENT ESTUARY, TASMANIA

被引：6
|
作者：
WOOD, JM
HORWITZ, P
COX, H
机构：
[1] UNIV TASMANIA,CTR ENVIRONM STUDIES,HOBART,TAS 7001,AUSTRALIA
[2] GOVT ANALYST LABS,HOBART,TAS 7000,AUSTRALIA
来源：
SCIENCE OF THE TOTAL ENVIRONMENT | 1992年 / 125卷
关键词：
SEDIMENTS; HEAVY METALS; ESTUARY; DATING;
D O I：
10.1016/0048-9697(92)90395-9
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The Electrolytic Zinc Company of Australasia Limited (EZ) has been discharging heavy metals into the Derwent Estuary since 1917 and has had an exemption to exceed discharge levels specified under State legislation since 1973. Sediments down stream of EZ, were cored and dated using the caesium-137 (Cs-137) technique, and analysed for Cd, Cu, Pb and Zn. The highest concentrations were found at approximately 0.8 m which appear to correlate with the period of known high emission concentrations during the early 1970s. Shallow sediments showed lower concentrations reflecting EZs' claims of greater recovery of metals by improved technology.
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页码：253 / 262
页数：10
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