Analysis of Heavy Metal Bioaccumulation and Correlation in Nidirana adenopleura from the Wanshan Mercury Mining Area
To understand the heavy metal enrichment characteristics of the tissues of Nidirana adenopleura in the Wan-shan mercury mining area and their correlation,we analyzed the differences in the bioaccumulation characteristics of 10 heavy metal elements,namely Cr,Mn,Ni,Cu,Zn,Cd,Pb,As,Se,and Hg,in tissues of the N.adenopleura(liver,skin,femur,muscle,and phalanges)within the typical farmland habitats of the Wanshan mercury mining area.The sources and contributions of heavy metal elements were identified by nonnegative matrix factorization analysis,and the cor-relation between heavy metal elements in the tissues of N.adenopleura was analyzed by grey correlation analysis.The re-sults showed that the enrichment degree of heavy metal elements in the body of N.adenopleura in Wanshan mercury min-ing area was different.The average mass fraction was Zn,Cu,Mn,Pb,Se,Cr,Hg,Cd,Ni,and As in decending order.Cu,Se,Cr,Ni,Cd and Hg were mainly enriched in liver tissue,Mn,Zn and Pb in femur and phalanges,and As in muscle tissue.Based on the nonnegative matrix factorization and correlation analyses,Hg,Cu,Cr,Pb and Se originate mainly from mercury mining activities,As mainly from agricultural activities,Mn mainly from manganese mine smelting activities,and Ni,Zn and Cd from multiple composite pathways.In conclusion,amphibian phalanges has a good bioindicator func-tion,and can be used as a non-lethal assay for the study of animal heavy metal contamination.The results of this study can provide a scientific basis for the prevention and control of environmental pollution and wildlife protection in the Wanshan mer-cury mining area.
Heavy metalsBioaccumulationNidirana adenopleuraMercury mining
万方数据
维普
