论文部分内容阅读
利用2013年7-8月在哈密榆树沟水文站采集的河水样品,对主要的化学离子、p H值、电导率EC、总可溶性固体TDS进行了系统的分析,阐明了研究区离子的来源及成因.分析结果表明:榆树沟流域夏洪期径流水体呈弱碱性;HCO_3~-、Ca~(2+)分别为最主要的阴、阳离子,Ca~(2+)质量浓度占阳离子总数的69.45%,HCO_3~-质量浓度占阴离子总数的84.18%;水化学类型为HCO_3~--Ca~(2+);径流中所含的水化学物质一定程度上受水量的稀释作用控制;通过Gibbs图、阴阳离子三角图示法以及主要离子比值法的综合分析得出,水化学离子主要来源于H_2CO_3风化碳酸盐岩,同时还伴有少量的H_2SO_4风化碳酸盐岩,岩石风化主要以方解石矿物的溶解作用为主.
The main chemical ions, p H value, conductivity EC and total soluble solid TDS were systematically analyzed by using river water samples collected at Yushugou hydrological station in Hami from July to August in 2013. The source of ions in the study area was clarified. The results show that: the runoff water bodies in Yushugou watershed are weak alkaline in the summer flood season; HCO_3 ~ - and Ca ~ (2+) are the most important anion and cation respectively, Ca2 + concentration accounts for 69.45% , HCO 3 ~ - concentration accounted for 84.18% of the total number of anions; water chemistry type was HCO 3 ~ - Ca 2+; the water chemistry contained in runoff was controlled to a certain degree by the dilution of water; The results show that the hydrochemical ions mainly originate from H 2 CO 3 weathered carbonate rocks, accompanied by a small amount of H 2 SO 4 weathered carbonate rocks. The rock weathering mainly takes the form of calcite minerals Dissolution-based.