摘要
文章在对柴达木盆地水文特征研究的基础上 ,重点对柴达木盆地主要河流的水化学特征进行了较为全面的分析研究。柴达木盆地河水的化学组成虽各具特色 ,但大部分河流阴离子中以HCO-3 占优势 ,阳离子中以Ca2 +为主。以每升水中的毫克浓度为单位 ,阴离子HCO-3 >Cl- >SO2 +4 ,阳离子Ca2 +>Na++K+>Mg2 +,只有部分河流如 :察汗乌苏河、夏日哈河和那棱格勒河在离子组成上是Cl- >HCO-3 >SO2 +4 ,Na++K+>Ca2 +Mg2 +。按照水文地质学的常用方法 ,根据每一升水中主要阴、阳离子的浓度 ,将河水分为 3种类型 ,即重碳酸盐类、硫酸盐类和氯化物类。根据取样测试 ,河水的总矿化度值在 1 2 6 6 0mg·L- 1 ～777 96mg·L- 1 ,总硬度值在 1 1 5mol·L- 1 ～ 3 73mol·L- 1 ,总碱度值在 1 89mol·L- 1 ～ 3 6 8mol·L- 1 。文章还对柴达木盆地河水中微量元素的含量进行了分析、研究 ,对水质状况进行了评价。提出了水环境保护的意见和措施。
Based on investigation of hydrologic characteristics in the Qaidam Basin, main concern of this paper is devoted to water chemical analysis. In term of water component, most rivers are dominated with HCO3 - in anion and Ca 2+in cation. While to several rivers, such as Chahanusu river, Xiariha river and Nalinggele river, the water component is different, which is Cl ->HCO3 ->SO4 2+ in anion, and Na ++K +>Ca 2++Mg 2+ in cation, respectively. Measured by major aqueous anions and cations milligram equivalents, conventional measurement units in hydrogeological, river water in Qaidam basin can be classified into three types, that is, bicarbonate, sulfate and chloride. According to the sampling test, total mineralization, hardness, and alkality of river water in the Qaidam basin varies 126.6～777.96 mg L -1, 1.15～3.73 mol.L -1 , 1.89～3.68mol.L -1, respectively. Furthermore, trace element of river water in Qaidam basin and water quality are discussed and policy implications to water conservation are presented.
出处
《资源科学》
CSSCI
CSCD
北大核心
2002年第2期37-41,共5页
Resources Science
基金
中国科学院创新项目 (编号 :KZCX1-10 -0 7)
关键词
河流
柴达木盆地
水文特征
水质评价
水环境保护
The Qaidam basin
Hydrological feature
Water quality assessment
Water environmental protection.
