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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
Wei Sheng Yan Jiu = Journal of Hygiene Research
|January 22, 2015
Summary
Rare earth elements (REEs) in Fujian teas show similar distribution patterns to their soils, with light REEs being dominant. Further investigation is needed for high REE concentrations found in some teas.
Area of Science:
- Environmental Science
- Analytical Chemistry
- Food Science
Background:
- Rare earth elements (REEs) are increasingly recognized for their potential impact on ecosystems and human health.
- Tea plants can accumulate elements from their environment, including soils and water.
Purpose of the Study:
- To determine the composition and distribution of 15 rare earth elements (La to Lu, and Y) in various Fujian province teas.
- To compare the REE patterns in tea with those in their corresponding plantation soils.
Main Methods:
- Collected 145 tea samples (9 varieties) from Fujian province.
- Analyzed REE concentrations using inductively coupled plasma-mass spectrometry (ICP-MS).
Main Results:
- Total REE concentration averaged 2.483 mg/kg, with light REEs (LREEs) being dominant (1.764 mg/kg).
- Cerium (Ce) was the most abundant REE.
- REE distribution patterns in teas closely mirrored those in plantation soils.
Conclusions:
- Chondrite-normalized REE patterns in Fujian teas align with soils from Fujian, Mainland China, and green tea from Jiangsu.
- Elevated REE levels in certain Fujian teas warrant further investigation due to potential implications.
