香菇中7种微量元素含量的调查与分析

摘要

采用电感耦合等离子体质谱仪（ ICP-MS）法测定了浙江省10个县（市、区）香菇中Cu，Fe，Zn，Cr，Ni， Se和Mn等7种微量元素的含量，并进行统计分析，7种元素含量均符合正态或对数正态分布。其背景值分别是Zn 8.6029 mg· kg-1， Fe 5.3845 mg· kg-1， Mn 2.2159 mg· kg-1， Cu 1.0912 mg· kg-1， Se 0.0473 mg· kg-1， Cr 0.0056 mg· kg-1，Ni 0 mg· kg-1。结果表明：7种微量元素含量存在区域差异和总体正相关性；与一般蔬菜相比，Zn含量是其3～5倍，Cu含量是其1～2倍，Mn和Se含量相当；Ni和Cr的含量远低于国家食品安全标准。%The content of 7 kinds of trace elements , Cu, Fe, Zn, Cr, Ni, Se and Mn, were determined by ICP-MS in 10 counties (cities, districts) of Zhejiang province.The statistical analysis showed that the content of 7 kinds of elements fitted normal or lognormal distribution .The background values were 8.6029 mg· kg-1 for Zn, 5.3845 mg· kg-1 for Fe, 2.2159 mg· kg -1 for Mn, 1.0912 mg· kg -1 for Cu, 0.0473 mg· kg-1 for Se, 0.0056 mg· kg-1 for Cr and 0 mg· kg-1 for Ni.It showed regional differences and overall positive correlation among the content of 7 trace elements.Compared with the ordinary vegetables , the content of Zn was 3-5 times higher, the content of Cu was 1-2 times higher , and Mn and Se content were similar .The contents of Ni and Cr were far lower than the national food safety standards .