西江干流梧州--肇庆段水化学特征研究

摘要

River hydrochemical characteristics may reflect human influence on water environment in a certain degree.The data from Wuzhou-Zhaoqing reach, xijiang river indicates that the chemical ion composition of the river water is characterized by dominance of HCO3-and Ca2+.And the mineralization is 256~414 mg/L.Hydrochemical characteristics in Wuzhou-Zhaoqing reach are mainly determined by the rock weatherization. Industry pollutants and anthropogenic activities is responsible to ion concentration changes of components in a certain degree.Our data also indicates that the content of NO3-and SO2-4 accumulated.%河流水化学特征可以从一定程度上反映出人类活动对水环境的影响。对西江干流梧州———肇庆段水化学参数分析表明，该段水体中阴离子以HCO3－占优势，阳离子以Ca2＋为主，其矿化度为256～414 mg／L。岩石风化作用成为控制河流离子化学组成主导因素，工农业污染物输入在一定程度上改变了天然河流的离子化学组成，使NO3－、 SO2－4等呈现富集趋势。