塔克拉玛干沙漠地下水矿化度与电导率关系的研究

用数理统计的方法推导水质矿化度与电导率的回归方程, 并绘制其关系曲线。经测定, 新疆塔克拉玛干沙漠84°E沿线水化学类型主要为Cl^-·SO₄^2--Na⁺, 通过推导得出, 25℃情况下, 当电导率为4.5~12ms/cm, 矿化度依电导率的回归方程为: y=-0.3016+0.6936x; 当电导率<5.4ms/cm, y=-0.171+0.6833x, 建立矿化度与电导率的关系后, 测定地下水的电导率, 即可获得待测样的矿化度, 为野外考察或定点观测提供获得地下水矿化度的简便、快速而准确的方法。

STUDY ON THE RELATIONSHIP OF MINERALIZATION DEGREE AND ELECTRICAL CONDUCTIVITY OF GROUND WATER IN TAKLIMAKAN DESERT

This paper discussed the mathematical statistical measure which was used to deduce the regression equation of mineralization degree(y) changing with electrical conductivity(x) of ground water. In Taklimakan Desert, the regression equations were y=-0 3016+0.6936x, under the condition of 25℃ temperature and 4.5~12 ms/cm electrical conductivity; and y=0.171+0 6833x, when the temperature was 25℃ and the electrical conductivity was below 5.4 ms/cm. Thus,only with the electrical conductivity data of groundwater measured by the specialized instrument, the mineralization degree of this sample could be obtained through the regression equation. This way makes the accesses of getting the mineralization degree of groundwater convenient, speed and accurate, which suits for use in the field specially.