CAJ | 학술논문

通过对湘江长沙段土壤和沉积物中重金属（ As、Pb、Cd、Cr、Hg）质量分数的调查，运用模糊综合评价法对该段土壤和沉积物中重金属污染状况进行了评价．研究结果表明：湘江长沙段土壤和沉积物重金属污染严重，土壤主要污染元素为Cd、Hg，沉积物主要污染元素为Cd、As、Pb．通过聚类分析，可将这5种重金属按来源分为三大类，第一类为Pb、As；第二类为Cd、Hg；第三类为Cr．同时以TiO2为基准，结合粒度效应分析，对该地区的沉积物重金属污染源进行了判别．结果表明：湘江长沙段沉积物中重金属As、Pb的来源为人为源和自然源的混合源；Cd、Hg、Cr污染的来源主要为人为源．
통과대상강장사단토양화침적물중중금속（ As、Pb、Cd、Cr、Hg）질량분수적조사，운용모호종합평개법대해단토양화침적물중중금속오염상황진행료평개．연구결과표명：상강장사단토양화침적물중금속오염엄중，토양주요오염원소위Cd、Hg，침적물주요오염원소위Cd、As、Pb．통과취류분석，가장저5충중금속안래원분위삼대류，제일류위Pb、As；제이류위Cd、Hg；제삼류위Cr．동시이TiO2위기준，결합립도효응분석，대해지구적침적물중금속오염원진행료판별．결과표명：상강장사단침적물중중금속As、Pb적래원위인위원화자연원적혼합원；Cd、Hg、Cr오염적래원주요위인위원．
The degree of heavy metal contamination of soils and sediments was evaluated in this thesis through the utilization of fuzzy comprehensive evaluation by investigating the contents of heavy metals ( As, Pb, Cd, Cr, Hg) in samples taken from Changsha section of the Xiangjiang river.The results show that the heavy metal contam-ination of soils and sediments is serious in this area.The dominant contaminative elements in soils are Cd and Hg, and the main contaminative elements in sediments are Cd, As and Pb.These elements can be divided into three categories by using cluster analysis, the first kind:As, Pb;the second kind:Cd, Hg;and the third kind:Cr.At the same time, by using the TiO2 as base line, the pollutant source of the sediments in this area was analyzed.It can be deduced that the heavy metals As, Pb are mixtures of natural and anthropogenic processes, while the source of contaminations of Cd, Hg and Cr are mainly anthropogenic.