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当前位置: 首页 > 文章 > 延吉市表层土壤中重金属的分布特征 延边大学农学学报 2019,41 (1) 51-57
Position: Home > Articles > Distribution characteristics of heavy metals in surface soils of Yanji City Agricultural Science Journal of Yanbian University 2019,41 (1) 51-57

延吉市表层土壤中重金属的分布特征

作  者：
金光洙;姚镇;赵华鑫;郑舒元;全红梅
单  位：
延边大学理学院 ;延边大学农学院
关键词：
延吉市;土壤;重金属;分布特征
摘  要：
为调查延吉市表层土壤中的重金属污染状况,采集了延吉市市区表层土壤样品,采用电感耦合等离子体质谱仪测定了土壤中重金属元素的含量.结果表明:延吉市表层土壤中重金属的浓度(m g/kg)为:铬4.85~22.09,镉未检出~0.04,砷14.07~26.78,铅2.82~20.08,铜8.73~28.92,锌36.33~148.61,铊未检出~0.34,镍9.86~26.99,锰70.59~267.10,锑未检出~0.63,钒8.40~40.76,钴5.86~15.11,钼未检出.其中,铬、铊、铅、镉浓度在商业居住区较高,在市郊区、工业区分布较低,而砷的浓度则无空间差异.内梅罗综合污染指数评价表明:延吉市土壤中重金属污染状况属于清洁水平,但62% 的土壤样品中砷的单因子污染指数处于警戒线水平.富集因子分析表明:土壤中的砷主要受人为源的影响,铜、镍、钡、锌、钴、铅、铊和钒受到自然源和人为源2方面的影响,其他元素主要受到自然源的影响.通过主成分分析得出,土壤中重金属人为源污染贡献率为59%,自然源为12%,混合源为29%.本结果可为区域环境管理与保护提供科学依据.
译  名：
Distribution characteristics of heavy metals in surface soils of Yanji City
作  者：
JIN Guangzhu;YAO Zhen;ZHAO Huaxin;ZHENG Shuyuan;QUAN Hongmei;Agricultural College of Yanbian University;Sciences College of Yanbian University;
关键词：
Yanji City;;soil;;heavy metal;;distribution characteristics
摘  要：
In order to investigate the pollution status of heavy metals in Yanji City, surface soil samples were collected and the contents of heavy metals in soil were determined by inductively coupled plasma mass spectrometry(ICP-MS). Results showed that the concentrations of heavy metals in the soil(mg/kg) were Cr 4.85-22.09, Cd not detected(ND)-0.04, As 14.07-26.78, Pb 2.82-20.08, Cu 8.73-28.92, Zn 36.33-148.61, Tl ND-0.34, Ni 9.86-26.99, Mn 70.59-267.10, Sb ND-0.63, V 8.40-40.76, Co 5.86-15.11, Mo ND. The concentrations of Cr, Tl, Pb and Cd were higher in commercial residential areas, lower in suburbs and industrial areas, but the concentrations of As were no spatial difference. Nemero's comprehensive pollution index indicated that the pollution status of heavy metals in Yanji soil belonged to the clean level, but the single factor pollution indexes of As in 62% samples were at the warning level. Enrichment factors analysis showed that As in soil was mainly influenced by human sources, while Cu, Ni, Ba, Zn, Co, Pb, Tl and V are affected by both natural and anthropogenic sources, and other elements were mainly influenced by natural sources. Principal component analysis showed that the contribution rates of heavy metal pollution for anthropogenic source, natural source and mixed source in Yanji soil were 59%, 12% and 29%, respectively.

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