环境镉污染重点地区土壤及食物镉含量调查

发布时间：2019-04-27 14:23

【摘要】：目的了解广西环境镉污染重点地区土壤及食物镉含量水平。方法于2014—2015年,在广西3个重金属污染重点防控区选择污染较严重的4个行政村作为污染区,同时选择3个行政村作为对照区,采集183件土壤样品和971件地产食物样品,采用电感耦合等离子体质谱仪(ICP-MS)测定镉含量。结果污染区和对照区土壤镉合格率分别为0.0%和16.7%。污染区农田、菜地土壤镉含量的中位数分别为2.31 mg/kg(范围为0.84~13.50 mg/kg)和4.04 mg/kg(范围为0.34~82.80 mg/kg),对照区农田、菜地土壤镉含量的中位数分别为0.61 mg/kg(范围为0.20~0.92 mg/kg)和0.83 mg/kg(范围为0.18~1.38 mg/kg)。污染区土壤镉含量高于对照区,合格率低于对照区,差异均有统计学意义(P0.01)。污染区食物镉合格率66.9%,对照区食物镉合格率83.2%。以大米的镉含量最高,污染区大米镉合格率仅为25.5%。结论污染区土壤镉污染严重,由此造成的食物镉污染对人体健康存在潜在影响。
[Abstract]:Objective to understand the level of cadmium in soil and food in key areas polluted by cadmium in Guangxi. Methods from 2014 to 2015, 183 soil samples and 971 real estate food samples were collected from four seriously polluted administrative villages and three administrative villages as control areas in three key control areas of heavy metal pollution in Guangxi. The cadmium content was determined by inductively coupled plasma mass spectrometer (ICP-MS). Results the eligible rates of cadmium in contaminated area and control area were 0. 0% and 16. 7%, respectively. The median cadmium content in vegetable soil was 2.31 mg/kg (0.84 ~ 13.50 mg/kg) and 4.04 mg/kg (0.34 ~ 82.80 mg/kg) in the polluted area, respectively, and that in the control area was 2.31 mg/kg (0.84 ~ 13.50 mg/kg) and 4.04 mg/kg (0.34 ~ 82.80 mg/kg), respectively. The median cadmium content in vegetable soil was 0.61 mg/kg (range 0.20 ~ 0.92 mg/kg) and 0.83 mg/kg (range 0.18 ~ 1.38 mg/kg), respectively. The cadmium content in the contaminated soil was higher than that in the control area, and the qualified rate was lower than that in the control area, the difference was statistically significant (P0.01). The qualified rate of food cadmium in contaminated area was 66.9%, and the qualified rate of food cadmium in control area was 83.2%. The cadmium content in rice was the highest, and the qualified rate of cadmium in polluted area was only 25.5%. Conclusion the cadmium pollution of soil in polluted area is serious, and the food cadmium pollution has potential influence on human health.
【作者单位】：广西壮族自治区疾病预防控制中心环境卫生与地方病防制所;
【基金】：广西壮族自治区科技开发课题(桂科攻1298004-1) 广西医疗卫生重点科研课题(重2012053)
【分类号】：X53;X56

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