【摘要】 目的:对四川地区食用菌中重金属污染情况进行评价。方法:分别采用原子荧光法测定As、Hg和Pb,原子吸收法测定Cu、Mn、Cr和Cd;对测定结果采用单因子污染指数法和内梅罗污染指数法进行污染评价。结果:所调查的52份食用菌总合格率仅为7.69%,Cr、Hg和Cd含量在部分食用菌中超标,其中Cr元素超标最为严重;而元素Mn在食用菌中的含量相对其余6种元素最多,平均可达15.93mg/kg;污染评价结果显示,Cr对食用菌污染最严重。结论:四川地区食用菌重金属污染严重,并且应尽快完善Mn含量的相关标准。更多还原

【Abstract】 The contents of As, Hg and Pb in 5 edible fungal species from different parts of Sichuan province were determined by atomic fluorescence spectroscopy (AFS) and those of Cu, Cr and Cd by atomic absorption spectroscopy (AAS). Based on the results of determination, an assessment of heavy metal pollution was made by single factor pollution index and Nemerow pollution index methods. The results showed that the total eligibility rate of 52 tested samples was only 7.96%. The contents of Cr, Hg and Cd were above the regulated criteria in some of these samples, and the content of Cr exceeded the national standard more seriously than those of the other two heavy metals. The average content of Mn in all these samples reached 15.93 mg/kg, the highest among the 7 elements. The pollution evaluations also showed that the pollution situation of Cr was the most serious. As a conclusion, heavy metal pollution in edible fungi from Sichuan province is very serious and meanwhile, the relevant standards for Mn content should be improved as soon as possible.更多还原