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[Quantitative analysis and comparison of 56 element contents in normal human lung tissues of 4 cities]
Jing Zeng1, Li Ouyang, Xiaoyan Wang
1School of Public Health, Peking University, Beijing 100083, China. rebzeng@gmail.com
Objective:
To determine element contents in normal human lung tissue and compare their differences between districts.
Methods:
Total 56 elements in 16 normal human lung tissues of 4 cities were detected by ICP-MS, ICP-AES and GF-AAS, and the measurement accuracy and precision were estimated.
Results:
All element determination values of national standard reference materials were in accord with the certified or reference values, the recovery rates were in the rang of 95% - 110%, and the RSD of most elements are less than 10%. The method is proved accurately and crediblely. The similar distributions of elements in lung samples of 4 cities were found in the study. Except 6 elements (Cu, Rb, Ge, Ce, Hg and Pb), the significant differences of the contents of all 50 measured elements were not observed between 4 cities.
Conclusion:
The results indicated that the element contents could be stable in healthy human lung tissues in 4 cities.
