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Related Experiment Videos

[Environmental fluorine level in Tibet].

J Cao1, Y Zhao, J Liu

  • 1Tea and Health Laboratory, Hunan Medical University, Changsha 410078.

Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology
|January 5, 2002
PubMed
Summary

High fluorine levels were detected in Tibetan diets, particularly in brick tea. This suggests that consuming brick tea may lead to fluorosis in these high-altitude regions.

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Area of Science:

  • Environmental Science
  • Public Health
  • Geochemistry

Background:

  • Tibetan populations often consume diets high in locally sourced foods and beverages.
  • Brick tea is a staple beverage in Tibetan culture, with significant consumption.
  • Understanding fluorine exposure is crucial for public health in high-altitude environments.

Purpose of the Study:

  • To quantify fluorine concentrations in various dietary components and environmental samples in Tibetan habitats.
  • To investigate the potential link between brick tea consumption and elevated fluorine levels.
  • To assess the risk of fluorosis among Tibetan populations due to dietary fluorine intake.

Main Methods:

  • Fluorine concentrations were measured using an ion-specific electrode potentiometer.
  • Samples included water, soil, fuel, food, vegetables, butter tea, and Zanba.
  • Water-soluble fluorine content in brick tea was specifically analyzed.

Main Results:

  • Fluorine concentrations in water, soil, fuel, and vegetables were 0.06 mg/L, 0.45 mg/kg, 0.10 mg/kg, and 0.06-0.33 mg/kg, respectively.
  • Butter tea and Zanba made from brick tea showed fluorine levels of 3.09 mg/L and 3.61 mg/kg.
  • Water-soluble fluorine in brick tea from Sichuan and Yunnan reached 533.89-617.32 mg/kg.

Conclusions:

  • Brick tea exhibits significantly high water-soluble fluorine content.
  • Dietary intake, especially from brick tea, is a likely source of high fluorine exposure in Tibet.
  • Drinking brick tea may be a contributing factor to fluorosis in Tibetan habitats.

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