Abstract:

In order to research the NO3-N pollution of underground water in Luancheng County and its distribution, the author used spectrophotometric method to analyze underground water samples from 17 wells within Luancheng County. The results showed that the underground water had been polluted by NO3-N universally. The NO3-N pollution in Basin of Xiao River was obviously higher than that in Basin of Ye River, the average NO3-N content in Basin of Xiao River was 11.58 mg/L, the highest was 63.8 mg/L, which was not suitable for the minimum standard of drinking water; quality conditions of underground water was good in Basin of Xiao River, the average NO3-N content was 4.7 mg/L. In Basin of Xiao River, the closer samples distance to Xiao River, the higher NO3-N content; in the same distance, the NO3-N content was obvious high, which was located in the soil and rock layer loose, the mineral existing. Due to the sewage discharge and the sewage irrigation, in the Basin of Xiao River in Luancheng County, the NO3-N pollution of underground water was very serious.