摘要
目的研究8个不同地区稻谷中五种重金属元素含量,分析不同地区稻谷中重金属元素分布特征。方法采用电感耦合等离子体质谱法检测稻谷中总铬、镉、总砷、铅、总汞5种重金属元素含量;利用主成分分析法对不同地区稻谷中重金属元素分布特征进行分析判别。结果云南省不同地区稻谷中重金属元素具有不同特征,超标率较低,但是检出率较高,尤其是总铬和镉的污染较为广泛。结论云南省稻谷中重金属含量总体处于食品安全风险较低水平。但仍需进一步控制环境中重金属污染源头,并做好稻谷中重金属水平的持续监测与风险评估。
Objective To determine contents of five heavy metal elements in rice collected from eight areas ofYunnan and analyze the elements distribution characteristics in rice from different areas. Methods The contents of5 heavy metals including chromium, cadmium, arsenic, lead and mercury in rice were detected by inductivelycoupled plasma mass spectrometry. The distribution characteristics of heavy metal elements in rice in differentareas were analyzed and distinguished by principal component analysis. Results The heavy metal elements inrice from different regions of Yunnan province had different characteristics, and the rate of over-standard waslower, but the detection rate was higher, especially the pollution of total chromium and cadmium was moreextensive. Conclusion The content of heavy metals in rice in Yunnan Province is generally at a low level of foodsafety risks. However, it is still necessary to further control the source of heavy metal pollution in the environment,and to conduct continuous monitoring and risk assessment of heavy metals in rice.
作者
赵晓慧
王瑾
ZHAO Xiao-Hui;WANG Jin(Yunnan Center for Disease Control and Prevention,Kunming 650022,China)
出处
《食品安全质量检测学报》
CAS
2019年第22期7738-7743,共6页
Journal of Food Safety and Quality
关键词
稻谷
重金属
主成分分析
rice
heavy matel elements
principal component analysis
