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中南大学学报(英文版)

Journal of Central South University

Vol. 23    No. 8    August 2016

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A land use-based spatial analysis method for human health risk assessment of heavy metals in soil and its application in Zhuzhou City, Hunan Province, China
WANG Zhen-xing(王振兴)1, GUO Qing-wei(虢清伟)1, YANG Zhi-hui(杨志辉)2, SUN Guo-qing(孙国庆)3, YE Wan-sheng(叶万生)1, HU Xi-bang(胡习邦)1

1. South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, China;
2. School of Metallurgical and Environment, Central South University, Changsha 410083, China;
3. School of Geosciences and Info-physics, Central South University, Changsha 410083, China

Abstract:A land use- and geographical information system-based framework was presented for potential human health risk analysis using soil sampling data obtained in Zhuzhou City, Hunan Province, China. The results show that heavy metal content in soil significantly differs among different land use types. In total, 8.3% of the study area has a hazard index (HI) above the threshold of 1.0. High HIs are recorded mainly for industrial areas. Arsenic (>87%) and the soil ingestion pathway (about 76%) contribute most to the HI. The mean standardized error and root-mean-square standardized error data indicate that the land use-based simulation method provides more accurate estimates than the classic method, which applies only geostatistical analysis to entire study area and disregards land use information. The findings not only highlight the significance of industrial land use, arsenic and the soil ingestion exposure pathway, but also indicate that evaluating different land use-types can spatially identify areas of greater concern for human health and better identify health risks.

 

Key words: soil; heavy metal; health risk; land use; geographic information system (GIS)

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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