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.
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.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%