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氟是地理环境中的广布元素,它在地壳中的平均含量为270ppm。在生态环境中,氟是经常与人体接触,并不断参加体内新陈代谢和物质循环的微量元素。它既为人体所必需,稍过量又对人体产生危害。在地理环境中,其含量的区域分异十分明显:既有堆积富集区,又有淋溶缺氟区。地方性氟病就是由区域环境中所累积的高含量氟,通过饮水、食物或空气进入人体,破坏人体内氟钙磷的代谢平衡而引起的疾病。轻者出现氟斑牙、腰腿酸痛等症状;重者则骨骼畸形、骨折乃至瘫痪。本文仅据笔者近年调查和搜集的资料,就我国氟病区分布的若干地理规律和特点,作一初步探讨。
Fluorine is a widely distributed element in the geography, with an average content of 270 ppm in the crust. In the ecological environment, fluorine is often in contact with the body, and continue to participate in the body’s metabolism and material recycling trace elements. It is both necessary for the human body, a slight amount of harm to the human body. In the geographical environment, the content of the regional differentiation is obvious: both the accumulation of enrichment areas, there are leaching of fluoride-free zone. Endemic fluorosis is a disease caused by the high levels of fluoride accumulated in the regional environment, which enter the body through drinking water, food or air and destroy the metabolic balance of calcium, phosphorus and phosphorus in the human body. Light fluoride teeth appear, waist and leg pain and other symptoms; severe skeletal deformities, fractures and even paralysis. Based on the data collected and surveyed by the author in recent years, this article makes a preliminary study on some geographical laws and characteristics of the distribution of fluorosis in our country.