RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2017, Vol. 26 >> Issue (06): 865-873.doi: 10.11870/cjlyzyyhj201706009

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CONTAMINATION AND HEALTH RISK FOR HEAVY METALS VIA CONSUMPTION OF VEGETABLES GROWN IN NON-FERROUS METALS SMELTING AREA

XIA Fang1,2, WANG Qiu-shuang1,2, CAI Li-mei1,2,3, YANG Chao1,2, FENG Zhi-zhou5, TANG Cui-hua1,2, WEI Ying-hai1,2, XU Zhen-cheng3,4   

  1. 1. Ministry of Education Key Laboratory of Oil and Gas Resources and Exploration Technologies, Yangtze University, Wuhan 430100, China;
    2. College of Resources and Environment, Yangtze University, Wuhan 430100, China;
    3. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;
    4. South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, China;
    5. Department of Water Resources and Environment, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2016-10-24 Revised:2016-12-30 Online:2017-06-20
  • Supported by:
    National Natural Science Foundation of China (41203061);Natural Science Foundation of Hubei Province of China (2015CFB603);Science &Technology Project of Education Department, Hubei Province, China (D20161301);State Key Laboratory of Organic Geochemistry, GIGCAS (OGL-201408);TrainingProgram of Innovation and Entrepreneurship for Undergraduates of Yangtze University (2015007, 2016006)

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Abstract: A systematic survey on concentrations of Cd, Cu, Pb and As in eight kinds of vegetables and their corresponding soils at 10 sampling sites near the Daye Copper Plant in Daye City, Hubei Province, China, was carried out for assessing heavy metal pollution, bio-concentration ability and potential health risk to local inhabitants due to exposure via consumption of vegetables. The results showed that the soils of the studied vegetable plots were seriously contaminated by heavy metals and the mean concentrations of Cd, Cu, Pb and As reached 5.28 mg/kg, 193.37 mg/kg, 93.83 mg/kg and 36.56 mg/kg, and are 31.06, 6.30, 3.51 and 2.97 times of background contents of the corresponding heavy metals in the soils of Hubei Province, respectively. The pollution characteristics of multi-metals in soils are mainly reflected by Cd. The proportions of vegetable samples which Cd and Cu concentrations exceeded the Maximum Levels of Contaminants in Foods (GB2762-2012) were 68% and 6%, respectively. The values of bio-concentration factor from soil to edible part of vegetable decreased in the order of Cd > Cu > As > Pb, and the bio-concentration factor values of all heavy metals in the edible part of leafy vegetables were higher than the non-leafy vegetables. The soils and vegetables were heavily polluted by heavy metals, as shown by the influence index of comprehensive quality of soils and vegetables is 10.07. The consumption of the polluted vegetables would lead to potential health risk especially for children, since both THQ values of Cd and As via the consumption of polluted vegetables were above 1. The total metals THQs for adults and children were 2.11–5.06, 2.78–6.64, respectively, due to consumption of vegetable around the plant. The potential health risk for local residents living nearby Daye Copper Plant is serious due to the combined heavy metal in vegetables.

Key words: copper smelting, vegetable, heavy metal, health risk, Daye

CLC Number: 

  • X820.4
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