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首页> 外文期刊>Chinese science bulletin >The ion chemistry of surface and ground waters in the Taklimakan Desert of Tarim Basin, western China
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The ion chemistry of surface and ground waters in the Taklimakan Desert of Tarim Basin, western China

机译：塔里木盆地塔克拉玛干沙漠地表水和地下水的离子化学

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The physio-chemical and chemical features of water in natural conditions are controlled by the weathering of bedrocks, local climate, landforms and other geo-environmental parameters. In order to understand the characteristics of water and the originsof the dissolved loads in the rivers and in theground waters of the Taklimakan Desert, western China, we studied the ions in the water samples collected from rivers and wells. We collected water samples from four rivers (Keriya River, Cele River,Tumiya River and Yulongkashi River) in the southern desert and ground water samples from many partsof the desert. Major cations and anions were measured using ion-chromatograph and titration with HCI.The total dissolved solids (TDS), pH and conductivity were examined on site by a portablemulti-parameter analyzer. The data show that the water in the rivers of southern Taklimakan is still offresh water quality and slight alkalinity, although the TDS is comparatively higher than that of manyother rivers of the world. The ground water is fresh to slightly saline, with TDS a little higher than that ofriver water in the study area. The concentration of ions is slightly different between the four rivers inthe southern Taklimakan. However, the chemistries of ground water in all samples are to a large degreecontrolled by sodium and chloride. The ions in the ground water are concluded to be mainly fromdissolving of evaporites, consistent with the dry climate in the region, whereas the ions in the rivers aremainly from rock weathering. Low-level human imprints are recognized in the ground water samplesalso.
机译：在自然条件下，水的物理化学特征受基岩的风化，局部气候，地形和其他地质环境参数的控制。为了了解水的特征以及中国西部塔克拉玛干沙漠的河流和地下水中溶解负荷的来源，我们研究了从河流和井中采集的水样中的离子。我们从南部沙漠中的四个河流（克里雅河，塞勒河，图米亚河和玉龙喀什河）收集了水样，并从沙漠的许多地方收集了地下水样。使用离子色谱仪测量主要阳离子和阴离子，并使用HCl滴定法。现场使用便携式多参数分析仪检查总溶解固体（TDS），pH和电导率。数据显示，尽管TDS相对高于世界上其他许多河流，但Taklimakan南部河流中的水仍是新鲜水质和弱碱性。地下水是新鲜的或微咸的，其TDS略高于研究区域的河水。塔克拉玛干南部的四个河流之间的离子浓度略有不同。但是，所有样品中地下水的化学成分在很大程度上受钠和氯化物的控制。得出的结论是，地下水中的离子主要来自蒸发岩的溶解，这与该地区的干旱气候相符，而河流中的离子主要来自岩石的风化作用。在地下水样品中也可以识别出少量的人类烙印。

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