CAJ | 학술논문

对甘肃省徽县耕层土壤中的铬、铅、汞、砷、镉进行测定分析,利用自然背景值和国标二级评价标准(GB 15618-1995)来评价其重金属含量状况,同时借助 ArcGIS软件研究了污染指数的空间分布状况.结果表明：以土壤环境自然背景值为评价标准,徽县土壤中的重金属的平均含量均已超过污染指标；以国标二级为评价标准,则除镉以外的4种重金属的单项污染值全都小于1,未受污染.一般农区综合污染指数为0.54,总体上来看未受污染,污染区综合污染指数0.82,属于警戒区.
대감숙성휘현경층토양중적락、연、홍、신、력진행측정분석,이용자연배경치화국표이급평개표준(GB 15618-1995)래평개기중금속함량상황,동시차조 ArcGIS연건연구료오염지수적공간분포상황.결과표명：이토양배경자연배경치위평개표준,휘현토양중적중금속적평균함량균이초과오염지표；이국표이급위평개표준,칙제력이외적4충중금속적단항오염치전도소우1,미수오염.일반농구종합오염지수위0.54,총체상래간미수오염,오염구종합오염지수0.82,속우경계구.
The contents of heavy metals (Hg,Pb,Cr,Cd and As)in soil of Hui County,Gansu Province were investigated to evaluate soil environmental pollution of heavy metals by using natural background val-ues and national standard (GB 15618-1995),furthermore,the spatial distribution of pollution index was analyzed with the aid of geographical information system (ArcGIS)technology.The results showed that the soil was polluted by heavy metals,Hg,Pb,Cr,Cd and As when using natural background values as e-valuation standard,but was not polluted by these heavy metals except Cd while using national standard (GB 15618-1995)as evaluation standard.In the general agricultural areas,comprehensive pollution index was 0.54,which indicated unpolluted.But the the comprehensive pollution index of contaminated area was 0.82,which belonged to the warning value.