Characteristics,Bioefficacy and Source Analysis of Heavy Metals in Peach Orchard Soils Around the Gold Mining Area
The content of heavy metals,morphological characteristics,bioeffectiveness and the main sources of heavy metal elements were analysed by using geostatistics,Risk Assessment Coding(RAC),Ratio of Distribution of Secondary and Prima-ry Phases(RSP),Principal Component Analysis(PCA)and Cluster Analysis in the soils of peach orchard land around the gold mining area of Wanzhuang,Pinggu,Beijing,China.The results showed that three heavy metals,As,Cd and Pb,showed relatively obvious accumulation in the soil;five heavy metals in the soil,including As,Cr,Hg,Pb and Zn,were in the main form of residue state,while Cd was in the main form of ion-exchange state and residue state;the order of the pollution degree of the risk evaluation of the RAC of soil heavy metal elements was as Cd＞Zn＞Hg＞Cr=Pb＞As,and the RSP of Cd was mainly medium and heavy.The RSP of Cd element in soil is mainly medium and heavy pollution.The results of principal component and cluster analysis showed that the contribution of mixed natural and anthropogenic sources(As,Cd and Pb)was 44.235％,agricultural production sources(Cu and Zn)and atmospheric deposition sources(Hg)were 21.428％,and natural sources(Cr and Ni)were 14.338％.
soilheavy metalschemical formbioeffectivenessassessmentanalysis of sources
万方数据
维普
