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[Composition and distribution patterns of rare earth elements in Fujian teas]
Hedong Luo1, Wenwei Wang, Tingting Wang
1Xiamen Center for Disease Control and Prevention, Xiamen 361021, China. luohedong@126.com
Objective:
To investigate the composition and distribution pattern of rare earth elements in the teas from Fujian province.
Methods:
A total of 145 samples of nine varieties of the teas were collected from their plantation fields and markets in Fujian province. The concentrations of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y in the samples were determined by inductively coupled plasma-mass spectrometry (ICP-MS).
Results:
The concentrations of total REEs, light REEs (LREEs) and heavy REEs (HREEs) in the teas were 2.483, 1.764, 0.720 mg/kg, respectively. The LREE was dominant with the highest concentration of Ce. The distribution pattern of the REE contents in the teas and corresponding plantation soils were similar.
Conclusion:
After the chondrite-nomalized distribution treatment, it was found that the REEs in the Fujian teas had a similar pattern with those of the soils in the Fujian province and Mainland China, and also with those in the green tea from Jiangsu province. However, the high concentrations of REEs in some Fujian teas should be paid with more attention and investigation.
