摘要
在塔里木河上游源流阿克苏河及其干流共设 6个监测站 ,进行了一个完整年度的水化学分析 ,得出氟离子的分布规律为 :( 1 )上游源流含量低 ,年平均小于 1 0mg/L ,干流含量高 ,年平均大于 1 0mg/L ;( 2 )F- 含量高低与河水流量有密切关系 ,夏季洪水期流量超过 1 0 0m3/s,含量低于 1 0mg/L ,平水期和枯水期流量小于 50m3/s ,含量高于 1 0mg/L ,最高达 3 5mg/L ;( 3)地下水中的F- 含量也很高 ,绝大部分在 1 0mg/L以上 ,最高达 4 58mg/L .造成塔里木河F- 含量增加的原因 ,主要是大量高矿化度的农田排水泄入 ,农田排水的矿化度在 6 68— 8 89g/L ,平均F- 含量 4 5mg/L .要改善塔里木河水质 ,必须控制向农田排水泄入 .
On the main stream of Tarim River, specially at its upper reach——Ak\|Su River, 6 monitoring stations were set up, and water samples were collected for chemical analysis were carried out. The distribution of the F ion was obtained, The results showed: (1) The F content at the upper reach is low, annual mean value is lower than 1 0?mg/L, but in the main stream, its contents is high, the annual mean value is bigger than 1 0?mg/L. (2) The F\+- ion content whether high or low, corresponds closely with the flow of river water, when the flow of the summer flood, the flow that overtops than 100?m\+3/s, then the F\+- content will be lowered than 1 0?mg/L; at the normal flowage period, the flow is less that 50?m\+3/s, the F\+- content will be higher than 1 0?mg/L, the highest reaches 3 53?mg/L; (3) F\+- content in ground water is also very high, most parts are higher than 1 0?mg/L, the highest reaches 4 58?mg/L. The reason that caused the increasing of F content of Tarim River water, is mainly caused of flowing\|in high mineralized farming\|land draining water, their mineralizations mostly are within the extent of 6 68—8 89?mg/L, and the average F content reaches 4 5?mg/L. In order to improve the quality of Tarim River water, the flowing\|in of farming\|land draining water must be strictly controlled.
出处
《环境科学学报》
CAS
CSCD
北大核心
2000年第5期579-583,共5页
Acta Scientiae Circumstantiae
基金
中国科学院资源与生态环境重大项目! (KZ951 B1 2 1 3)
国家重大基础研究973项目 !(G1 9990 4 350 9)资助
