|Table of Contents|

Ecological risk evaluation of heavy metals in soils at the high environmentalrisk area of the sub-branches of Huaihe River*(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Issue:
2016 02
Page:
257-262
Research Field:
Articles
Publishing date:

Info

Title:
Ecological risk evaluation of heavy metals in soils at the high environmentalrisk area of the sub-branches of Huaihe River*
Author(s):
LIANG Bao1 2 YANG Yongjian1** WANG Xianliang2 3** QIAN Yan2 LU Zhanlu2 GUO Chen2 WU Jiabing1 2& ZHAO Shuli4
1School of Public Health, Anhui Medical University, Anhui 230032, China2Chinese Research Academy of Environmental Sciences, Beijing 100012, China3Institute of Environmental Health and Related Product Safety, Chinese Center for Disease Control and Preven
Keywords:
soil heavy metal single-factor method Nemerow pollution index ecological risk assessment
CLC:
X53 + X820.4
PACS:
DOI:
10.3724/SP.J.1145.2015.09005
DocumentCode:

Abstract:
The environmental health risk of the residents living in the sub-branches of Huaihe River has been a major concernfor many years because of the severe water pollution. Detecting the content of metals in the soil around its sub-branches KuiheRiver and Tuohe River and evaluating the potential ecological risk may provide basic information for local environmentalmanagement. Nine villages distributed within 2 000 m from Kuihe River and Tuohe River in Yongqiao District of Suzhou,Anhui Province, were selected as the study area. Soil samples were collected at sites 500 m, 1 000m, and 2 000 m, respectively,away from each river. ICP-MS was used to detect the content of As, Cd, Cr, Cu, Ni, Pb and Zn in the samples. Single-factormethod, Nemerow pollution index method and potential ecological risk index method were used to evaluate the level of soilcontamination and potential ecological risk. Cd and As were over standard in all 27 samples; the over standard rate was 37.0%for Zn, 29.6% for Ni, 25.9% for Cu and 22.2% for Cr. The contents of Pb were all below the standards. The As, Cd, Cr, Ni, Cu,Zn concentrations all exceeded their background values. The results from single-factor method showed moderate Cd pollution,mild As and Cr pollution, and slight pollution of Ni, Pb, Cu, and Zn. The Nemerow pollution index of the soil surroundingKuihe River and Tuohe River was 3.1, indicating severe pollution of the soil. The ecological risk value of the soil was 166.8,which demonstrated strong ecological risks of this area. The investigation indicated high contents of heavy metals in the soiland unacceptably great ecological risk in the study area. Effective treatment should be conducted to reduce the content of heavymetals in the soil.

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Last Update: 2016-04-25