| 珠穆朗玛峰绒布河源区河水化学特征 |
| 摘要点击 1396 全文点击 1560 投稿时间：1999-11-10 |
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| 中文关键词 珠穆朗玛峰 绒布河 水化学 流量 |
| 英文关键词 Mt.Everest Rongbuk River water chemical characteristics discharge |
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| 中文摘要 |
| 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 117份 ,采用 PE-2380型原子吸收光谱仪测定样品的阳离子 ,Dionex-100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 . |
| 英文摘要 |
| 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、SO2-4 and Ca2+ ,respectively.According to the ionic concentrations,the order of major ions was:Ca2+>K+>Na+>Mg2+,SO2-4>Cl->NO-3.② The high positive correlation existed among Ca2+、Mg2+、SO2-4,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. |
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