Knowledge Management System Of Institute of Earth Environment, CAS
Concentration and Fractionation of Heavy Metalsin the Old Yellow River Estuary, China | |
Liu,HQ(Liu,Houqi)[1,2]; Liu,GJ(Liu,Guijian)[2]; Da,CN(Da,Chunnian)[1]; Yuan,ZJ(Yuan,Zijiao)[1]; Wang,J(Wang,Jie)[1] | |
2015-01-08 | |
发表期刊 | Journal of Environmental Quality |
卷号 | 44期号:2015页码:174-182 |
文章类型 | 期刊论文 |
摘要 | A sequential extraction procedure was applied to determine the concentration and fractionation characteristics of eight heavy metals (HMs) (Cu, Zn, Pb, Cd, Cr, Fe, Mn, and Ni) in a sediment core collected from the old Yellow River Estuary, China. The results revealed that the mean deposition rate of this sediment core, which spanned 87 yr (1925–2012), was approximately 0.5 cm yr−1. The mean concentrations and ranges of HMs were Cu: 26.9 (18.3–38.5), Zn: 76.4 (51.0–107), Pb: 37.3 (17.8–53.8), Cd: 0.23 (0.20–0.27), Cr: 84.7 (45.5–116), Fe: 24,000 (16,500–31,700), Mn: 709 (388–1020), and Ni: 36.1 (24.8–47.2) mg kg-1 (dry weight). Six HMs (Cu, Zn, Cr, Cd, Fe, and Ni) were present in their highest proportion in the residual fraction; their lowest proportion was observed in the exchangeable fraction. Lead primarily existed in the oxidizable or residual fraction. Manganese was mainly presented in the exchangeable fraction. The risk assessment code results revealed that the sediments displayed a low risk for Cu, Zn, Pb, Cr, Cd, Fe, Mn, and Ni. The HMs Cu, Zn, Cr, Cd, Mn, and Ni displayed minor enrichment in the sediment core, whereas for Pb, moderate contamination enrichment was observed. Overall, an increase in I geo and total concentration of HMs occurred since 1925 and reached a maximum value around 1980, after which there was a larger fluctuation or decline until 2012. We also found that the degree of HM pollution during the 1976–1996 period was less serious than before 1976. All the sediment samples exceeded the effect range low (ERL) for Ni, whereas 56.1, 7.32, and 17.1% exceeded the ERL values for Cr, Cu, and Pb; no samples exceeded the ERL for Zn or Cd. |
DOI | 10.2134/jeq2014.04.0180 |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/9450 |
专题 | 黄土与第四纪地质国家重点实验室(2010~) |
作者单位 | 1.CAS Key Lab. of Crust-Mantle Materialsand the Environments, School of Earth and Space Sciences, Univ. of Science andTechnology of China, Hefei 230026, China; 2.State Key Lab. of Loessand Quaternary Geology, Institute of Earth Environment, The Chinese Academy ofSciences, Xi’an 710075, Shaanxi, China |
推荐引用方式 GB/T 7714 | Liu,HQ,Liu,GJ,Da,CN,et al. Concentration and Fractionation of Heavy Metalsin the Old Yellow River Estuary, China[J]. Journal of Environmental Quality,2015,44(2015):174-182. |
APA | Liu,HQ,Liu,GJ,Da,CN,Yuan,ZJ,&Wang,J.(2015).Concentration and Fractionation of Heavy Metalsin the Old Yellow River Estuary, China.Journal of Environmental Quality,44(2015),174-182. |
MLA | Liu,HQ,et al."Concentration and Fractionation of Heavy Metalsin the Old Yellow River Estuary, China".Journal of Environmental Quality 44.2015(2015):174-182. |
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