摘要
为了研究绒布河源区夏季河水的基本化学特征 ,野外采集水样 1 1 7份 ,采用 PE- 2 380型原子吸收光谱仪测定样品的阳离子 ,Dionex- 1 0 0型离子色谱仪测定阴离子 .结果表明 :1绒布河源区河水为 HCO3,SO4- Ca型 .其离子浓度顺序为 :Ca2 +>K+>Na+>Mg2 +,SO2 -4 >Cl- >NO- 3 .2河水中离子 Ca2 +、Mg2 +、SO2 -4 之间 ,以及 K+和 Na+之间有很好的正相关关系 ,河水化学组成大部分来源于当地岩石的风化分解 .3整个夏季河水各月离子平均浓度和流量有良好的正相关关系 ,流量大的月份 ,各离子平均浓度也大 ,反之亦然 .
In order to study the water chemical characteristics at the head of Rongbuk River,the samples were collected from June to October in 1998.The cation concentration were analyzed by PE 2380 atomic absorption spectrophotometer and the anion concentrations by Dionex 100 ion chromatograph.The results indicated:①The anion and cation in streamwater were dominated by HCO - 3、SO 2- 4 and Ca 2+ ,respectively.According to the ionic concentrations,the order of major ions was:Ca 2+ >K +>Na +>Mg 2+ ,SO 2- 4>Cl ->NO - 3.② The high positive correlation existed among Ca 2+ 、Mg 2+ 、SO 2- 4,so did K +、Na +.The major ions in streamwater came from mineralization of bedrock or local glacial deposits.③During the whole summer,the major ionic mean concentrations correlated positively with the mean discharge of the river water in each month.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2000年第5期59-63,共5页
Environmental Science
基金
中国科学院资源与生态环境研究"九五"重大项目!( A) ( KZ- 951 - A1 - 40 2 - 0 3)
国家攀登项目! ( 95-预-40 )
国家自然科学
