地理学报 ›› 1982, Vol. 37 ›› Issue (3): 291-302.doi: 10.11821/xb198203008

• 论文 • 上一篇    下一篇

陕西榆林地区地理环境与地方性氟中毒的初步分析

聂树人   

  1. 陕西师范大学地理系
  • 出版日期:1982-07-15 发布日期:1982-07-15

ANALYSIS ON THE GEOGRAPHICAL ENVIRONMENT ANDENDEMIC FLOURINE POISONING IN THE YULINPREFECTURE OF SHAN-X1 PROVINCE

Nie Shu-ren   

  1. Deportment of Geography, Shan-Xi Normal University
  • Online:1982-07-15 Published:1982-07-15

摘要: 氟是地球外壳广泛存在着的一种表生迁移能力和负电性强的卤族元素。氟在药理上的意义是它和钙、钠及其它金属具有强烈的亲和力,从而使它能进入很复杂的化合物中,并成为人体生命活动所必需的微量元素。

关键词: 地方性氟中毒, 榆林地区, 高氟环境, 氟离子含量, 水氟含量, 陕西榆林, 定边, 高氟水, 地理环境, 初步分析

Abstract: The main contents in this paper are as follows:1. The geographical distribution of fluorine poisoning affected regions.2. The geographical factors in the formation of higher fluorine content water.3. Improving the environmental quality to prevent endemic fluorine poisoning. The Yu-lin Prefecture is a major affected region of Shau-Xi Province. 38.7% ofthe total population have fluorotic mottled teeth and 2.1% have fluorotic osteopathy. This is a slightly and moderately affected region.In this Prefecture, when the fluorotic content reaches or exceeds 1.0 ppm in the drinking water, the clinic symptoms and signs becomes apparent. As the average con-tent of fluorine in drinking water exceeds the national hygienical standard in greater part of the Prefecture, one may say that this is an affected region. Furthermore, it has also the conditions for the disease to reappeared in a region previously affected. The concentration of fluorine in groundwater is higher in the western and southern counties; these are the major areas of endemic fluorine poisoning in the Prefecture. The symptom, however, is scattering in the region rather than concentrated.The major geographical factors causing higher-fluroine content in water in locality are: (1) The climate; (2) The composition of surface materials: (3) The topog-raphy; (4) Biological and human- social factors.According to our study, the following measures are very important to improve the environmental quality, as well as to prevent endemic fluorine.(1) Planting vegetation (both trees and grasses), especially those fluorine-tole-rant vegetations and those having the ability to absorb fluorites.(2) Preventing and harnessing soils from being salinized.(31 "Rational distribution of the residential areas and improving the quality of their drinking water.(4) Taking measures to prevent pollution of the environments around the sources of water supply.