云南省黑木耳重金属背景值及质量安全风险评估

Background Levels of Heavy Metal Contents and Risk Assessment of Safety of Black Fungus Quality in Yunnan Province

采用原子吸收光谱仪对云南省黑木耳56份材料的重金属元素铅、镉进行测定与分析。结果表明,不同市场和不同产地的黑木耳重金属铅、镉含量变异大(2.20%～64.6%);云南省黑木耳的重金属铅的背景值为3.00 mg/kg,镉的背景值为0.176 mg/kg;云南省黑木耳中铅的安全指数大于镉,铅的风险大于镉的风险。黑木耳的消费量在很大程度上影响着重金属铅、镉对消费者的整体危害程度(IFS),食用黑木耳为平均消费量时,IFS几乎均小于1;食用黑木耳为最大消费量时,IFS均大于1。本研究为探讨云南省黑木耳重金属背景值及质量安全风险评估提供了有益的参考数据。

The heavy metals of Pb,Cd in different samples of Yunnan black fungus were determined and analyzed by atomic absorption spectrometry.The results indicated that the contents of Pb,Cd in black fungus from different markets and places of production showed high variation coefficients（2.20 %-64.6 %）,the background level of Pb was 3.00 mg/kg and Cd was 0.176 mg/kg.The degree of risk of Pb in black fungus was greater than that of Cd.The consumption quantity of black fungus affected the overall health hazard（IFS）of Pb and Cd in a large extent.The value of IFS was nearly less than 1 when average quantity of black fungus was consumed and the value of IFS was greater than 1 when maximum quantity of black fungus was consumed.The article provided much reference date for background levels of heavy metal contents and risk assessment of the safety of black fungus quality in Yunnan Province.