Journal of Shandong University (Health Sciences) ›› 2024, Vol. 62 ›› Issue (1): 95-101.doi: 10.6040/j.issn.1671-7554.0.2023.0660

• Public Health & Management Sciences • Previous Articles    

Heavy metal pollution status and dietary exposure risk of marketed vegetables in Yantai City

TANG Yuying1, WANG Baozhen1, XIAO Peirui2, ZHAI Yuting3, WANG Kebo2, CHEN Chen1, CHU Zunhua2   

  1. 1. Department of Health Toxicology and Nutrition, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China;
    2. Institute of Food and Nutrition, Shandong Center for Disease Control and Prevention, Jinan 250014, Shandong, China;
    3. Department of Chronic and Non-communicable Disease Control and Prevention, Zhaoyuan Center for Disease Control and Prevention, Zhaoyuan 265499, Shandong, China
  • Published:2024-02-02

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Abstract: Objective To investigate the status of heavy metal pollution in vegetable samples in Yantai City, and to assess the dietary exposure risk. Methods According to the national standards, the contents of lead, cadmium, mercury, and arsenic in vegetables were measured and analyzed with the pollution index. The risk of dietary exposure was assessed with the target hazard coefficient(THQ)and total target hazard coefficient(TTHQ). Results The four heavy metals were detected in vegetables to varying degrees. The average contents of lead, cadmium, mercury, and arsenic were 0.014 2, 0.002 8, 0.000 4 and 0.007 1 mg/kg, respectively. The detection rate of cadmium was the highest, accounting for 35.36%. Of the 758 vegetable samples, 2 leek samples had excessive lead, and the over-standard rate was 0.26%. The pollution index and comprehensive pollution index of the four heavy metals were lower than 0.7. Of all samples, bulb vegetables were the most polluted but still at a safe level. The THQ and TTHQ of the four heavy metals for adults and children were less than 1. Conclusion The overall level of heavy metals in vegetables in Yantai City is relatively low. Eating vegetables poses no significant health risk to the human body.

Key words: Vegetables, Heavy metals, Pollution, Exposure, Risk assessment

CLC Number: 

  • R155
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