State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China.
University of Chinese Academy of Sciences, Beijing, China.
Food Addit Contam Part B Surveill. 2021 Jun;14(2):133-140. doi: 10.1080/19393210.2021.1903568. Epub 2021 Apr 12.
Dietary exposure to heavy metals is threatening human health worldwide. In this study, the concentration of cadmium, mercury, arsenic and chromium in 258 samples of brown rice, grown in Yangtze River Delta where the soils were low-level contaminated, were investigated. In 12 (4.6%) and 10 (3.9%) rice samples the concentrations of Cd and Hg, respectively, exceeded the limit for food. ANOVA showed that Cd and Hg concentrations in rice grains collected from Nanjing and Jiaxing were higher than in the less developed city Yancheng. Students' -test showed Cd and Hg were accumulated in hybrid rice higher than in conventional rice. The hazard quotients (HQs) showed a low risk from rice consumption. Conventional rice was recommended to cultivate to reduce the current risk in the soil defined as safe use level in Yangtze River Delta.
膳食中重金属的暴露正威胁着全世界人类的健康。本研究调查了生长在长江三角洲地区的 258 份糙米中的镉、汞、砷和铬的浓度。在 12 份（4.6%）和 10 份（3.9%）大米样品中，镉和汞的浓度分别超过了食品的限量。方差分析显示，来自南京和嘉兴的大米中镉和汞的浓度高于欠发达城市盐城。学生检验表明，杂交水稻中镉和汞的积累量高于常规水稻。危害系数（HQ）显示，食用大米的风险较低。建议种植常规水稻，以降低长江三角洲地区土壤安全使用水平下的当前风险。
