陕西秦岭翠华山泉水化学成分研究  

CHEMICAL COMPOSITION OF THE CUIHUA MOUNTAIN'S SPRING IN THE QINLING MOUNTAINS IN SHAANXI

作　　者：赵景波[1] 肖军[1] 李瑜琴[1] 岳应利[2] 刘再华[3] 

机构地区：[1]陕西师范大学旅游与环境学院 [2]陕西师范大学物理与信息技术学院,西安710062 [3]中国地质科学院岩溶地质研究所,桂林541004

出　　处：《第四纪研究》2005年第5期568-573,共6页Quaternary Sciences

基　　金：国家自然科学基金项目(批准号:40372117);国土资源部岩溶动力学重点实验室项目(批准号:2004-5-3)资助

摘　　要：为了研究泉水化学成分特点和在一年内的变化,文章利用pH-电导率自动记录仪对陕西秦岭翠华山地区两处泉水化学成分进行了每月2次的观测,并进行了水化学分析。翠华山泉水中HCO-3含量在76.27～152.55mg/L之间,Ca2+含量在14.48～26.92mg/L之间,Mg2+含量在4.46～4.89mg/L之间,K+含量在0.60～2.75mg/L之间,Na+含量在0.93～1.09mg/L之间,这些成分的特点是含量低。泉水pH值在6.98～5.69之间,夏秋季低于该区雨水的pH值,具酸性特征,这是该区地层主要由片麻岩构成决定的。从1月到11月,水秋池村泉水pH值和电导率呈现由大到小再到大的变化规律,引起这种变化的主要原因是夏秋季土壤CO2含量比冬春季高,泉水在夏秋季流动过程中吸收了较多的CO2。翠华湖西泉水pH值和Ca2+,Mg2+,K+,Na+离子含量比水秋池泉水高,从1月到11月Ca2+,Mg2+,K+,Na+离子含量变化与水秋池泉水变化相反,这应当是两个泉水的来源不同或在流动过程中遇到了酸碱性不同的土层和地层造成的。翠华山地区泉水化学成分变化是易于观测到的规律性很强的变化。In order to study the characteristics of spring＇s chemical composition and change law, the chemical composition of two springs was observed using a pH-conductivity meter twice a month in 2004 in the Cuihua Mountain area in Qinling Mountains, and the water chemical composition was analyzed. The content of HCO3^-, Ca^2＋, Mg^2＋, K^＋, Na^＋ in the two springs observed is 76.27-152.55mg/L, 14.48-26.92mg/L, 4.46-4.89mg/L, 0.60-2.75mg/L, 0.93-1.09mg/L, respectively. These compositions＇ content is rather low. The spring pH is among 6.98-5.69, and has acid characteristics that are lower than rainwater pH in summer and autumn. These are mainly determined by the gneiss that is the main stratum in this district. From January to November, spring water pH and conductivity in Shuiqiuchi spring demonstrate the change law from large to small and then to large. The main reason for this is that the soil CO2 content in summer and autumn is higher than that in spring and winter, and the spring has absorbed more CO2 in the course of flowing in summer and autumn. The pH, Ca^2＋, Mg^2＋, K^＋, Na^＋ content in the western spring of the Cuihua lake is higher than that in the Shuiqiuchi spring, while the change law of the is contrary to that in Shuiqiuchi spring. The possible reason is that the water source of these two springs is different. Alternatively, during the course of flowing, water meets different soil layers and stratums where CaCO3 content is different. The change of chemical composition in the springs of the Cuihua Mountain is of very obvious change law.

关 键 词：秦岭翠华山 泉水化学成分 变化规律 变化原因 

分 类 号：P641.3[天文地球—地质矿产勘探]