云南金顶超大型铅锌矿区镉的地球化学特征及其环境效应
GEOCHEMISTRY AND ENVIRONMENTAL EFFECT OF CADMIUM IN JINDING PB-ZN DEPOSIT OF YUNNAN
查看参考文献21篇
|
文摘
|
云南金顶铅锌矿是镉元素富集区,采矿活动导致镉元素释放出来进入地表环境造成镉污染.矿区不同岩石中镉分布差异比较大,围岩中镉含量范围在50×10~(-6)～650×10~(-6)之间,平均310×10~(-6),原生矿中镉含量范围14×10~(-6)～2800×10~(-6),平均767×10~(-6),氧化矿中镉含量范围110×10~(-6)～8200×10~(-6),平均1661×10~(-6),其平均值最高.氧化矿是镉元素的主要载体和释放源.淋滤实验表明矿石易氧化而释放出镉等有害元素,滤出元素可以迅速发生沉淀或被沉淀物包裹,其能力表现为Zn＞Pb＞Cd.研究结果表明,矿区下游沘江河段水体中隔的平均值为15.7 μg/L,悬浮物中镉平均值为49.3 mg/kg,沉积物中镉平均值为203.7 mg/kg.矿区富镉岩石和矿物的自然风化是造成批江水体和沉积物中镉污染的直接原因,对流域水生态环境造成潜在危害. |
|
其他语种文摘
|
The Jinding Pb-Zn deposit in Yunnan is rich in cadmium, and mining activity is ready to facilitate cadmium to release into the hypergene ecosystem. Concentration distribution of cadmium varies in different rocks in the mining district. In the host rocks, cadmium concentrations range from 50×10~(-6) to 650×10~(-6) with an average of 310×10~(-6). In primary ores, cadmium concentrations range from 14×10~(-6) to 2800×10~(-6) with an average at 767×10~(-6). However, in oxidized ore, cadmium is of highest enrichment, with a range of 110×10~(-6) to 8200×10~(-6) and an average of 1661×10~(-6). It is shown that the oxidized ore is the main carrier and environmental source of cadmium. The leaching test shows that Pb/Zn ore is susceptible to oxidize and readily releases Cd and other harmful elements. These leached elements in the leachate may be deposited rapidly in the order of Zn > Pb > Cd. As for Cd concentration distribution in the water ecosystem of the Bijiang River, 15.7 μg/L Cd exists in water, 49.3 mg/L in suspended sediment, and 203.7 mg/L in river sediment. The natural weathering of Cd-rich rocks and minerals presents a potential environmental risk for the aquatic ecosystem of the Bijiang catchment. |
|
来源
|
矿物学报
,2007,27(2):225-232 【核心库】
|
|
关键词
|
镉
;
环境地球化学
;
环境危害
;
金顶铅锌矿
|
|
地址
|
中国科学院,地球化学研究所, 环境地球化学国家重点实验室, 贵州, 贵阳, 550002
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1000-4734 |
|
学科
|
环境科学基础理论 |
|
基金
|
国家自然科学基金项目
;
中国科学院西部之光人才培养计划
|
|
文献收藏号
|
CSCD:2835245
|
参考文献 共
21
共2页
|
|
1.
Public Health Service Agency for Toxic Substances and Disease Registry. Public Health Service Agency for Toxic Substances and Disease Registry.
Toxicological Profile for Cadmium,1999
|
被引
1
次
|
|
|
|
|
2.
Leach D L. Mississippi Valley-type Pb-Zn deposits.
Preliminary Compilation of Descriptive Geoenvironmental Mineral Deposit Models,1995
|
被引
1
次
|
|
|
|
|
3.
Chi G. Modeling of fluid pressure evolution related to sediment loading and thrust faulting in the Lanping basin:Implications for the formation of the Jinding Zn-Pb deposit Yunnan China.
Journal of Geochemical Exploration,2006,89(3):57-60
|
被引
7
次
|
|
|
|
|
4.
Jiang S-Y. Mineral chemistry of Cd-rich sphalerite from the giant jinding Pb-Zn deposit Yunnan China.
Lithos,2004,73(2):52-52
|
被引
3
次
|
|
|
|
|
5.
Bai J. Geology of the Jinding Pb-Zn deposit in Yunnan.
Miner Depos,1985(4):1-10
|
被引
2
次
|
|
|
|
|
6.
Xue C. Two fluid systems in the Lanping basin Yunnan China-Their interaction and implications for mineralization.
Journal of Geochemical Exploration,2006,89:436-439
|
被引
3
次
|
|
|
|
|
7.
Xue C. fluid inclusion and isotopic characteristics of the Jinding Zn-Pb deposit western Yunnan South China:A review.
Ore Geology Reviews,2007,31:337-359
|
被引
18
次
|
|
|
|
|
8.
艾志敏. 浅析沘江水体污染.
云南环境科学,2002(3):58-61
|
被引
3
次
|
|
|
|
|
9.
赵明. 兰坪铅锌矿对沘江的污染及对策.
大理科技,1990(1):46-48
|
被引
2
次
|
|
|
|
|
10.
云南省地质矿产局第三地质大队八分队.
云南省兰坪县金顶铅锌矿详细勘探地质报告(上),1984
|
被引
1
次
|
|
|
|
|
11.
叶霖. 镉的地球化学研究现状及展望.
岩石矿物学杂志,2005,24(4):339-348
|
被引
17
次
|
|
|
|
|
12.
涂光炽.
分散元素地球化学及成矿机制,2003
|
被引
29
次
|
|
|
|
|
13.
李航. 镉的表生环境地球化学效应.
矿物岩石地球化学通报,2006,25(增刊):84-86
|
被引
2
次
|
|
|
|
|
14.
Brown G E. Surface science-How minerals react with water.
Science,2001,294(5540):67-69
|
被引
8
次
|
|
|
|
|
15.
Brown G E. Metal oxide surfaces and their interactions with aqueous solutions and microbial organisms.
Chemical Reviews,1999,99(1):77-174
|
被引
9
次
|
|
|
|
|
16.
Frenay J. Leaching of oxidized zinc ores in various media.
Hydrometallurgy,1985,15(2):243-253
|
被引
13
次
|
|
|
|
|
17.
Al-Abed S R. Comparative evaluation of short-term leach tests for heavy metal release from mineral processing waste.
Science of The Total Environment,2006,364:14-23
|
被引
9
次
|
|
|
|
|
18.
Nash J T.
Hydrogeochemical Investigations of Historic Mining Districts,Central Western Slope of Colorado,Including Influence on Surface-Water Quality,2002
|
被引
1
次
|
|
|
|
|
19.
Piatak N M. Mineralogical and geochemical controls on the release of trace elements from slag produced by base-and precious-metal smelting at abandoned mine sites.
Applied Geochemistry,2004,19(7):1039-1064
|
被引
5
次
|
|
|
|
|
20.
World Health Organization.
Guidelines for drinking-water quality,2004:317-319
|
被引
2
次
|
|
|
|
|
了解气象卫星更多信息，请访问