CAJ | 학술논문

[目的]研究长江三角洲地区土壤和水稻重金属污染特征.[方法] 测定长江三角洲地区150多个采样点的重金属含量,进行土壤环境质量评价,并研究重金属元素在不同区域和植物不同部位的含量分布以及转换和分配特征.[结果] 长江三角洲地区受Cd、Pb、Cr、Cu、Zn的污染,其中Cd污染最严重,Pb、Cu和Zn次之,Cr最轻,几乎不受Hg和As的污染,内梅罗污染指数为0.880,属于警戒级;水稻果实中Cd、Cr、Cu、Hg和Zn超过其背景值.按区域划分,土壤污染程度依次为:环太湖地区>浙江南部地区>沿江地区,城市直辖区>县级城镇及农村;按迁移转化规律划分,根际土壤>水稻根茎>水稻果实;转换系数Cd>Cu>Zn>As>Hg>Pb>Cr,分配系数Zn>Cr>Cd>Cu>Hg>Pb>As.[结论] 长江三角洲地区污染元素的数值范围较大,个别样本污染严重,应加大重金属污染防治与预防.
[목적]연구장강삼각주지구토양화수도중금속오염특정.[방법] 측정장강삼각주지구150다개채양점적중금속함량,진행토양배경질량평개,병연구중금속원소재불동구역화식물불동부위적함량분포이급전환화분배특정.[결과] 장강삼각주지구수Cd、Pb、Cr、Cu、Zn적오염,기중Cd오염최엄중,Pb、Cu화Zn차지,Cr최경,궤호불수Hg화As적오염,내매라오염지수위0.880,속우경계급;수도과실중Cd、Cr、Cu、Hg화Zn초과기배경치.안구역화분,토양오염정도의차위:배태호지구>절강남부지구>연강지구,성시직할구>현급성진급농촌;안천이전화규률화분,근제토양>수도근경>수도과실;전환계수Cd>Cu>Zn>As>Hg>Pb>Cr,분배계수Zn>Cr>Cd>Cu>Hg>Pb>As.[결론] 장강삼각주지구오염원소적수치범위교대,개별양본오염엄중,응가대중금속오염방치여예방.
[Objective] Characteristics of heavy metal pollution in soil and rice of Yangtze River Delta Region were studied. [Method] Heavy metal contents of more than 150 samples in Yangtze River Delta region were determined so as to make the soil environmental quality assessment and study the content distribution, transformation and distribution characteristics of heavy metals in different regions and different plant parts. [Result] The Yangtze River Delta region was polluted by Cd, Pb, Cr, Cu and Zn, among them Cd pollution was the most serious; Pb, Cu and Zn took second place; Cr appears the lightest; And there was almost no Hg and As pollution in this area. The Nemero pollution index of soil was 0.880 which was at the alert level. Cd, Cr, Cu, Hg and Zn in rice grains exceeded the background values. Heavy metal pollutions in soils divided by regions were in order of Taihu Lake region > Zhejiang region > Yangtze River region and urban areas > towns and rural areas. Heavy metal pollutions in soil divided by the uptake level were in order of rhizosphere soil > rice straw > rice grain. Transformation coefficients were in order of Cd > Cu > Zn > As > Hg > Pb > Cr. Distribution coefficients were in order of Zn > Cr > Cd > Cu > Hg > Pb > As. [Conclusion] There were larger value ranges of contaminated elements in the Yangtze River Delta Region, moreover individual samples had serious pollution, so the prevention and control of heavy metal pollution should be strengthened.