干制食用菌中重金属含量及榛蘑中镉的分析

目的 评估吉林省市售6种干制食用菌安全性,幵研究榛蘑中重釐属镉的含量。方法 对购买的样品采用微波消解法迚行前处理,采用石墨炉原子吸收法测定铅和镉的含量,原子荧光法测定总砷和总汞的含量。结果 161批干制食用菌的平均含量顺序为PbAsCdHg,超标率为3.1%。2018年检测22批榛蘑中5批镉超标, 2016年检测13批榛蘑中1批镉超标。结论 我省市售食用菌木耳、香菇、猴头菇、滑子蘑、黄蘑、榛蘑重釐属平均含量均低于国家污染物限量标准,符合安全性要求。榛蘑中镉含量偏高,应对超标食用菌加强监测,对超标地区严格监管以确保食品安全。

Heavy metal content in dried edible fungi and distribution of cadmium in hazel mushroom

Objective To evaluate the safety of 6 kinds of dried edible fungi sold in Jilin province, and to study the content of heavy metal cadmium in hazel mushroom. Methods The samples were pretreated by microwave digestion, the contents of lead and cadmium were determined by graphite furnace atomic absorption spectrometry, and the contents of total arsenic and mercury were determined by atomic fluorescence spectrometry. Results The average content of 161 batches of dried edible fungi was Pb>As>Cd>Hg, and the over-standard rate was 3.1%. Totally 5 batches of 22 batches of hazelnut mushroom exceeded the standard in 2018, and 1 batch in 13 batches of hazelnut mushroom exceeded the standard in 2016. Conclusion The average content of heavy metals in black fungus, fragrant mushroom, monkey mushroom, slim mushroom, yellow mushroom and hazel mushroom sold in our province is lower than the national pollutant limit standard, and meets the safety requirements. The cadmium content in hazel mushroom is on the high side, we should strengthen the monitoring of edible fungi exceeding the standards, and strictly supervise the areas exceeding the standards to ensure food safety.