津北水土环境氟地球化学特征及其环境质量评价

doi:10.11720/wtyht.2020.1078

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Abstract

Fluorine is a necessary trace element for human beings, and lack or excess of fluorine will exert adverse effects on human health. In this paper, the geochemical characteristics and environmental quality of fluorine in soil, groundwater and crops in Jizhou district of northern Tianjin were studied. The results are as follows: The fluorine content in surface soil ranges from 201×10 ^-6 to 8545×10 ^-6, with an average of 757×10 ^-6. The average content is 1.25 times the background value of surface soil in Tianjin and 1.58 times that in China. In the vertical profile of soil, the fluorine content is higher in cohesive soil than that in sandy soil. The average fluoride content of groundwater in plain area is 1.50 mg/L and that in mountainous area is 0.47 mg/L. The fluoride content in plain area is obviously higher than that in mountainous area. Over 90% of the surface soil fluoride content in the region is excessive and high, and the proportion of groundwater samples of fluoride IV and V in plain area reaches 61.54%. The proportion of fluorine exceeding the standard in maize samples is 26.67%, with the maximum exceeding multiple over two times. Generally speaking, the fluorine content in surface soil and groundwater in the plain area of northern Tianjin is significantly higher than that in the high fluoride area. The fluorine content in some agricultural products has exceeded the standard, to which more attention should be paid by the relevant departments.

Key words： Jizhou District fluorine geochemistry environmental quality ecological effect

Received: 13 February 2019 Published: 03 March 2020

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	Articles by authors
	Wei-Xing WANG
	Shu-Ping CAO
	Gong-Ke LI
	Ya-Na ZHANG

Cite this article:

Wei-Xing WANG,Shu-Ping CAO,Gong-Ke LI, et al. Geochemical characteristics and environmental quality assessment of fluorine in soil and water in northern Tianjin[J]. Geophysical and Geochemical Exploration, 2020, 44(1): 207-214.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2020.1078 OR https://www.wutanyuhuatan.com/EN/Y2020/V44/I1/207

Complementary scheme for fluorine analysis of various samples

Standards for classification of fluorine in soil,groundwater and surface water

Fluorine geochemical map of surface soil

Brief description of soil profile characteristics

Distribution characteristics of fluorine in soil profile in Jizhou district

Distribution characteristics and environmental quality assessment of groundwater fluoride in plain and mountain areas of Jizhou

Distribution characteristics and environmental quality assessment of surface water fluoride

Assessment chart of surface soil fluoride environmental quality

Characteristics and evaluation of fluorine content in crops

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