摘要
目的了解广西环境重金属污染重点地区土壤及食物砷含量水平。方法于2014—2016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279件土壤样品和1 374件当地产食物样品,测定土壤砷含量、大米无机砷含量及食物总砷含量,并进行评价。结果污染区和对照区土壤砷合格率分别为19.7%和91.7%。污染区农田、菜地土壤砷含量的中位数分别为29.2 mg/kg(范围为2.2~847.0 mg/kg)和46.8 mg/kg(范围为2.5~379.7 mg/kg),对照区农田、菜地土壤砷含量的中位数分别为11.5 mg/kg(范围为3.2~91.5 mg/kg)和13.8 mg/kg(范围为2.5~160.0 mg/kg)。污染区土壤砷含量高于对照区,合格率低于对照区,差异均有统计学意义(P<0.01)。污染区食物砷合格率97.4%,对照区食物砷均合格。以污染区大米的砷含量最高,合格率为94.6%。结论污染区土壤砷污染较严重,由此造成的食物砷污染对人体健康存在潜在影响。
Objective To know the levels of arsenic（As） in soil and food in key areas with the heavy metal pollution in Guangxi.Methods From 2014 to 2016,four villages in three areas with heavy metal pollution were selected as the polluted area,three comparable villages as the control area.A total of 279 soil samples and 1 374 local food samples were collected, the levels of As in soil, inorganic arsenic（i As） in rice and the total arsenic（t As） in food were detected. Results As in soil showed qualified rate of 19.7% for polluted area with higher levels in farmland（M：29.2 mg/kg, range：2.2-847.0 mg/kg） and vegetable-plot（M：46.8 mg/kg, range：2.5-379.7 mg/kg）, and 91.7% for control area with lower levels in farmland（M：11.5 mg/kg, range：3.2-91.5 mg/kg）and vegetable-plot（M：13.8 mg/kg, range：2.5-160.0 mg/kg）. Higher level and lower qualified rate for As were found in polluted area compared with the control area（P〈0.01）. The qualified rate of t As in food was 97.4% in polluted area with the highest level in rice（qualified rate：94.6%）, and 100.0% in control area. Conclusion Arsenic pollution is serious in soil of polluted areas, which can affact food and have potential impact on human health.
作者
许露曦
钟格梅
黄林
黄江平
韦日荣
黎勇
梁林涵
农惠婷
XU Lu-xi;ZHONG Ge-mei;HUANG Lin;HUANG Jiang-ping;WEI Ri-rong;LI Yong;LIANG Lin-han;NONG Hui-ting(Institute of Environmental Health and Endemic Disease Control, Guangxi Zhuang Autonomous Region Center for Disease Prevention and Control,Nanning, Guangxi 530028, Chin)
出处
《环境与健康杂志》
CAS
北大核心
2017年第12期1084-1086,共3页
Journal of Environment and Health
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)
关键词
砷污染
土壤
食物
卫生调查
Arsenic pollution
Soil
Food
Hygienic survey
