中文摘要：

收集了45个不同市售来源的冬虫夏草样品,通过微波消解-电感耦合等离子体质谱法（ICP-MS）测定其As、Pb、Cd、Cu等重金属含量,通过微波消解-原子荧光光谱分析法（AFS）测定其Hg含量.用靶标危害系数（THQ）和总危害指数（HI）对Hg、Pb、Cd、Cu等4种重金属进行非致癌健康风险评价,用终生致癌风险（R）对As进行致癌健康风险评价.实验表明,45个样品中,As含量超标率达到100%,Hg含量超标率也达到70%,其他3种重金属均未检出超标现象.4种重金属的THQ以及HI值均远远小于1.0,即表明4种重金属通过冬虫夏草的摄入不会对人体造成非致癌风险.以总砷计算R=6.39×10-5超出WHO规定的限值1.0×10-5;而以无机砷计算R=3.09×10-7远远低于其限值.

英文摘要：

Microwave digestion-ICP-MS was used to measure As,Pb,Cd and Cu concentration,and Microwave digestion-AFS was used to measure Hg concentration in 45 Cordyceps sinensis samples collected from different commercial sources.THQ（Target hazard quotient） and HI（Hazard index）were used to assess the non-carcinogenic health risks of Hg,Pb,Cd,Cu,and R（Lifetime cancer risk） was used to assess carcinogenic health risk assessment of As.For the 45 samples,the over standard rate was 100% and 70% for As and Hg,respectively.THQ and HI were far less than 1,indicating that no non-carcinogenic risks from Hg,Pb,Cd,Cu by intaking Cordyceps sinensis.In terms of total arsenic,R = 6.39 × 10-5 was above the WHO limit,and in terms of inorganic arsenic R = 3.09×10-7 was far below the limit.