Application of stable isotope methods totracing the pollution source of groundwater

Abstract：The groundwater is the cleanest water resource for human beings, and the self_purification capacity of groundwater is fragile, so once it is polluted, it is very difficult to control. Therefore, the prerequisite of groundwater protection is to find the pollution source, and the stable isotope methods can be used in determining the recharge source of groundwater, the connection of groundwater and surface water, the mixing ratio of all kinds of pollution source in the groundwater. In this way, it has great prospect in finding pollution source of groundwater.

Keyword：groundwater; pollution and prevention; stable isotope; pollution source;