Determination of Heavy Metal Elements in Cinnamomum cassia from Different Producing Areas by Inductively Coupled Plasma Mass Spectrometry
[Objective]According to the regional characteristics of Cinnamomum cassia planting in Guangxi,this study determined the contents of 8 heavy metal elements in cassia bark including As,Pb,Cd,Hg,Cu,Cr,Zn and Ni,evaluated the safety risk of C. cassia exogenous harmful substances.[Method]Using microwave digestion-inductively coupled plasma mass spectrometry ( ICP-MS),8 metal elements of 43 batches of cinnamon in Guangxi main producing region were determined.[Result]The content of 7 heavy metals in the sample did not exceed the stand-ard,the Cd content generally exceeded the standard,the overbid rate accounted for 90.70％ of the sampling number. For heavy metal pollution evaluation in C. cassia,it was found that Cd pollution in C. cassia in 6 producing areas,the mean index method (PI) indicates that 8 kinds of heavy metals in C. cassia from Guiping City,Cenxi and Teng County were moderate pollution county,Pingnan County,Dongxing City and Fangcheng District were in a state of light pollution,the biggest pollution factor in all producing areas was Cd. The results of human health risk assessment showed that the daily intake of 8 heavy metals in cinnamon of the 6 producing areas was lower than the acceptable daily intake. The hazardous quotient HQ of each heavy metal was less than 1,suggesting that it will not cause non-carcinogenic health harm to human body. However,the harm coefficient HI value of 8 kinds of heavy metals in cinnamon from Guiping City,Cenxi City and Teng County was greater than 1,the theory was that oral administration of cinnamon in these three origins may cause non-carcinogenic health risks to human.[Conclu-sion]There are some differences in the heavy metal element content of cinnamon samples from different origins in Guangxi,the method in this study is fast and accurate,with high sensitivity and good repeatability,which can be used for the determination of heavy metal elements con-tent in C. cassia,and can provide a basis for the formulation of the limit standard of heavy metal elements in cinnamon.
Cinnamomum cassia in GuangxiHeavy metalMicrowave digestionICP-MSRisk assessment
万方数据
维普
