Citation: Shijin Chen, Qunxing Cai, Hui Zhao, Liji Du, Longsheng Chen. The Content Analysis of 14 Elements and Risk Evaluation of Heavy Metals in Common Teas[J]. Chemistry, ;2021, 84(6): 591-595. shu

The Content Analysis of 14 Elements and Risk Evaluation of Heavy Metals in Common Teas

Anhui Academy of Science and Technology, Hefei, 230000

Corresponding author: Hui Zhao, zh1986@iccas.ac.cn Liji Du, leonardo1317@163.com
Received Date: 13 November 2020
Accepted Date: 20 January 2021

Figures(2)

By using ICP-OES and ICP-MS, the contents of 14 elements of the experimental samples, including K, Ca, Mg, Mn, B, Cu, Fe, Ni, Zn, Cr, Co, Cd, As and Pb, had been determined. These experimental samples had been obtained by collecting three kinds of traditional "ten famous tea landmark products". One-way ANOVA, the principal component analysis and the pollution evaluation were used to study the content of inorganic elements, as well as the source of pollution. The results showed that the contents of K, Ca, Mg, Mn, Fe in tea samples from different areas were significantly different. Cd, Cr, Pb, As did not exceed the national standards for the food safety limit. A partial positive correlation existed between Cu and Cd, Cu and Ni, As and Ni pairwise. The principal component analysis showed that Cu, Cd, As and Ni were the representative factors of PC1, whereas K and Fe were the representative factors of PC2 and PC3, respectively. PC1 mainly represented the contributions of metal smelting, industrial discharge and waste incineration, while PC2 and PC3 represented the contributions of fertilizer application and tea processing, respectively.
- Tea,
- Inorganic elements,
- Heavy metals,
- Principal component analysis,
- Pollution evaluation
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