江苏地区小麦中重金属布研究

Distribution of heavy metals in wheat in Jiangsu province

通过微波消解、电感耦合等离子质谱仪(ICP-MS)分析了江苏地区小麦中镉、铅、汞、总砷、铬等5种重金属污染的含量,该5种元素在0~8 mg/L的浓度区间具有良好的线性关系,其相关系数r≥0.996;回收率为88.9%~110.8%。结果表明:江苏地区所抽取的小麦中重金属含量检测值均低于国家污染物限量标准,各市小麦中重金属元素的分布存在差异,与当地环境有关。

The contents of cadmium,lead,mercury,total arsenic,chromium and other metal elements in wheat in Jiangsu was analyzed by microwave dismemberment and inductively coupled plasma mass spectrometer(ICP-MS).The 5 metal elements have a good linear relationship in the concentration range of 0 to 8 mg/L,and their correlation coefficient is 0.996,and the recovery rate is 88.9%to 110.8%.The experimental data are real and reliable.The results show that the detection value of heavy metal content in wheat in Jiangsu is lower than the national pollutant limit standard,and the distribution of heavy metal elements in wheat in each city is different,which is related to the local environment.