Pan Xiao-Dong, Wu Ping-Gu, Jiang Xian-Gen
Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China.
Sci Rep. 2016 Feb 2;6:20317. doi: 10.1038/srep20317.
The present study analyzed 5785 vegetables for concentrations of As, Cd, Cr, Pb, Ni and Hg, and estimated the health risk to local consumers by deterministic (point estimates) approaches. Levels of elements varied in different vegetables. Average levels of As, Cd, Cr, Ni, Hg and Pb were 0.013, 0.017, 0.057, 0.002, 0.094 and 0.034 mg/kg (fresh weight), respectively. The samples with 0.25% for Cd and 1.56% for Pb were exceeding the maximum allowable concentrations (MACs) set by the Chinese Health Ministry. No obvious regular geographical distribution for these metals in vegetables was found in areas of Zhejiang, China. The mean and 97.5 percentile levels of heavy metal and metalloid were used to present the mean and high exposure assessment. The health indices (HIs) were less than the threshold of 1 both in mean and high exposure assessment. It indicates that for the general people there is very low health risk to As, Cd, Cr, Pb, Ni and Hg by vegetable intake.
本研究分析了5785种蔬菜中的砷、镉、铬、铅、镍和汞浓度，并通过确定性（点估计）方法评估了当地消费者的健康风险。不同蔬菜中元素含量各不相同。砷、镉、铬、镍、汞和铅的平均含量分别为0.013、0.017、0.057、0.002、0.094和0.034毫克/千克（鲜重）。镉含量为0.25%、铅含量为1.56%的样本超过了中国卫生部规定的最大允许浓度（MACs）。在中国浙江地区，未发现蔬菜中这些金属有明显的常规地理分布。采用重金属和类金属的均值和第97.5百分位数水平进行平均暴露评估和高暴露评估。健康指数（HIs）在平均暴露评估和高暴露评估中均低于1的阈值。这表明，对于一般人群而言，通过食用蔬菜摄入砷、镉、铬、铅、镍和汞的健康风险非常低。
