Vegetables,rice,eggs and drinking water samples were collected from e-waste dismantling area of Qingyuan City,Guangdong Province.Nickel (Ni) was analyzed in each sample,and the non-carcinogenic health [the daily intake (DI) and hazard quotient (HQ)] of each sample was evaluated.In this e-waste dismantling area,the contents of Ni in rice and eggs were (0.46±0.24) and (0.16±0.13) μg/g,which were higher than those in the control area [the contents of Ni in rice and eggs were (0.17±0.03) and (0.02±0.02) μg/g,respectively] (both P values＜0.05).The DI values of rice,vegetable,eggs,and drinking water were (3.61-5.86),(1.75-2.99),(0.11-0.24),and (0.08-0.12) μg· kg-1· day-1,respectively.The HQ values were 0.180-0.290,0.090-0.150,0.005-0.010,0.005-0.006,respectively.Although the HQ values of rice,vegetable,eggs,and drinking water were all lower than 1,which was an acceptable level.However,considering the possibility of combined exposure of heavy metals,the non-carcinogenic health risks of Ni in the e-waste dismantling area should still be concerned.%对广东省清远市电子垃圾拆解区的蔬菜、大米、鸡蛋和饮用水样品中镍进行测定,评估其非致癌健康风险,计算各样品的每日摄入量(DI)及危险系数(HQ).该电子垃圾拆解区,大米和鸡蛋镍的含量分别为(0.46±0.24)、(0.16±0.13)μg/g,均高于对照区[大米和鸡蛋镍的含量分别为(0.17±0.03)、(0.02±0.02) μg/g] (P值均＜0.05).大米、蔬菜、鸡蛋和饮用水的DI值分别为(3.61～5.86)、(1.75～2.99)、(0.11～0.24)和(0.08～0.12) μg·kg-1·day-1,HQ值分别为0.180～0.290、0.090～0.150、0.005～0.010、0.005～0.006.大米、蔬菜、鸡蛋和饮用水的HQ值均＜1,为可接受水平,但考虑到重金属联合暴露的可能性,电子垃圾拆解区镍的非致癌健康风险仍需引起足够关注.
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