摘要
1990～1991年对呼和浩特市南郊大气中的氟化物浓度用石灰滤纸法进行了测定,对引起某些采样点测定结果偏高的原因进行了分析。讨论了大气氟化物浓度随时间变化的特点。得出了在工作区范围内,呼市南郊是大气氟化物的清洁区的结论。结合1982～1984年农牧学院大气氟化物浓度测定结果,提出在农牧学院附近大气中氟化物浓度呈逐年上升趋势。
Fluoride in the air over the southern suburbs of Huhhot was tested withLTP method in 1990～1991.This paper analyzed the reasons for the highvalues in some sampling points and discussed air fluoride concentrationchanging patten with time.The result showed that there was no fluoridepollution problem in the tested areas.Consulting the measurement of airfluoride in the institute campus in 1982～1984,it showed that the air fluor-ide concentration over the campus tended to increase.
基金
国家自然科学基金
关键词
氟化物
石灰滤纸法
大气
浓度
fluoride
LTP method
quality standard
tend ance
season
