期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
云南不同矿区废弃地土壤肥力与重金属污染评价 被引量:51
1
作者 雷冬梅 段昌群 王明 《农业环境科学学报》 CAS CSCD 北大核心 2007年第2期612-616,共5页
取样测定了云南兰坪铅锌矿、开远煤矿、个旧锡矿废弃地土壤的营养元素(N、P、K、有机质)和重金属元素(Pb、Zn、Cu、Ni)的含量,并采用单项污染指数法和综合污染指数法评估了废弃地重金属污染状况。结果表明:(1)3个废弃地土壤肥力水平较... 取样测定了云南兰坪铅锌矿、开远煤矿、个旧锡矿废弃地土壤的营养元素(N、P、K、有机质)和重金属元素(Pb、Zn、Cu、Ni)的含量,并采用单项污染指数法和综合污染指数法评估了废弃地重金属污染状况。结果表明:(1)3个废弃地土壤肥力水平较低。全N、有效P、速效K,有机质等土壤肥力指标等级大都为Ⅲ和Ⅱ级;全P、全K、碱解N的含量很低,分别为0.015%~0.019%、0.12%~0.46%和4.99~38.05mg·kg-1。3个废弃地土壤肥力大小顺序为煤矿废弃地>锡矿废弃地>铅锌矿废弃地。(2)3个废弃地土壤全Pb22.99 ̄8816.34mg·kg-1,全Zn57.05 ̄36995.2mg·kg-1,全Cu60.42 ̄3339.69mg·kg-1,全Ni124.94 ̄656.11mg·kg-1;而有效态重金属含量很低,除铅锌矿废弃地有效Pb为166.56mg·kg-1外,其余都<50mg·kg-1。单项污染指数评价结果表明,铅锌矿废弃地污染指数Zn>Pb>Cu>Ni,锡矿废弃地污染指数Cu>Zn>Pb>Ni,且都达到重度污染程度,而煤矿废弃地仅Ni达到中度污染程度。综合污染指数评价结果表明,铅锌矿和锡矿废弃地重金属污染达到重度污染等级,而煤矿废弃地重金属污染为轻度污染等级。 展开更多
关键词 铅锌矿废弃地 煤矿废弃地 锡矿废弃地 土壤肥力 重金属污染 单项污染指数法 综合污染指数法
下载PDF
云南淘金沟锡矿山废弃地重金属来源分布及污染评价 被引量:5
2
作者 廖文静 李波 +1 位作者 陈杰 温泽群 《地质灾害与环境保护》 2022年第1期107-113,共7页
废弃锡矿山用地的恢复治理一直是国家关注的问题。为了探究云南淘金沟锡矿山废弃地重金属来源分布和污染情况,测定了废弃地表土层中Cu、Zn、Pb、Cr、Cd、Mn 6种元素含量和pH值,利用多元统计、地质统计法分析重金属来源及分布,采用地积... 废弃锡矿山用地的恢复治理一直是国家关注的问题。为了探究云南淘金沟锡矿山废弃地重金属来源分布和污染情况,测定了废弃地表土层中Cu、Zn、Pb、Cr、Cd、Mn 6种元素含量和pH值,利用多元统计、地质统计法分析重金属来源及分布,采用地积累指数法和潜在生态危害指数法对重金属污染进行评价。结果表明:除了Zn和Mn低于土壤环境质量农用地风险筛选值,其余元素均已超出风险筛选值;Cu属于强变异,其余元素属于中等变异;Cu和Mn符合对数正态分布,其余元素都服从正态分布;Zn、Pb、Mn主要来源于成土母质等自然因素,Cu和Cd来源于锡矿山尾矿库和废渣场,Cr来源于农业和土壤母质;Zn、Pb、Mn空间分布特征呈带状,Cu、Cr、Cd呈岛状和带状相结合的特点;污染指数评价表明Zn和Mn轻微污染,Pb和Cr属于中等污染,Cu和Cd污染最严重,研究区属于强潜在生态危害区。通过了解研究区土壤重金属的来源分布,对研究区进行污染评价,为废弃锡矿山的地质环境恢复治理提供一些依据。 展开更多
关键词 锡矿废弃地 土壤重金属 污染来源 空间变异 污染评价
原文传递
Abandoned Mine, Potential Home for the People: A Case Study of Jos Plateau Tin-Mining Region
3
作者 Samuel Danjuma Wapwera Grace Mebi Ayanbimpe Charles Egbu Odita 《Journal of Civil Engineering and Architecture》 2015年第4期429-445,共17页
This paper seeks to examine the JPTMR (Jos Plateau Tin-Mining Region) as an abandoned mine that provides land for housing by examining the impact of the tin-mining activities due to the presence of heavy metals and ... This paper seeks to examine the JPTMR (Jos Plateau Tin-Mining Region) as an abandoned mine that provides land for housing by examining the impact of the tin-mining activities due to the presence of heavy metals and radioactive substances and analyzing the level and availability of these substances and their effects on human health and the built environment within JPTMR. Utilizing secondary data, which map out 10 different locations in the region, the paper highlights the level of radioactive substances (X-ray, beta-ray and gamma-ray) and presence of heavy metals in the environment. The results show that there are traces of X-ray, beta-ray and gamma-ray as well as the heavy metals such as Pb, As, Cu, Cr and Ni which exceeded the international standards. This is particularly significant as people use the contaminated soils as building materials for their homes as well as for farming and food production. The inhabitants of the area are often without any knowledge about the perils of the contaminated soils, water as well as air which is serious long-term human catastrophe. Drawing from international experience, the paper argues that it is possible to develop housing in former tin-mining areas but requires careful remediation and engagement by the public and private sector. 展开更多
关键词 Abandoned mines contaminated land housing development home.
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部