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中南大学学报(英文版)

Journal of Central South University

Vol. 25    No. 7    July 2018

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Trace elements spatial distribution characteristics, risk assessment and potential source identification in surface water from Honghu Lake, China
LIU Chao-yang(刘朝阳)1, ZHANG Jing-dong(张敬东)1, LI Fei(李飞)1, 2, YANG Jun(杨俊)1,QIU Zhen-zhen(仇珍珍)1, CAI Ying(蔡莹)1, ZHU Li-yun(朱丽芸)1,XIAO Min-si(肖敏思)1, WU Zi-xian(伍紫贤)1

1. Research Center for Environment and Health, Zhongnan University of Economics and Law,
Wuhan 430073, China;
2. College of Environmental Science and Engineering, Hunan University, Changsha 410082, China

Abstract:Five trace elements including Zn, Cu, Cd, Cr and As were investigated in surface water from ten typical sampling sites in Honghu Lake. The consequence indicated that all of the detected trace element levels were within the allowed standard of China’s safe water guideline. The hazard quotients (HQ) and the hazard index (HI) value levels of all the five heavy metals in all sampling sites did not exceed the acceptable risk limits of non-carcinogenic value through the selected assessment method. Pearson’s correlation analysis and principal component analysis (PCA) indicated that Zn and Cu mainly originated from the natural alluviation and non-point agricultural sources, whereas Cr and As were mainly derived from industrial effluents. Moreover, Cd mainly originated from both non-point agricultural and industrial pollution sources. In addition, cluster analysis (CA) implied that cluster 1 (including S3, S5, S6 and S10) was considered the set of high pollution sites and cluster 2 (including S4 and S9) was identified as the set of moderate pollution sites.

 

Key words: spatial distribution characteristic; risk assessment; source identification; trace elements; Honghu Lake

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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