https://www.selleckchem.com/pr....oducts/hexamethonium
Due to the vulnerability of karst hydrological systems, nitrate pollution in karst groundwater has become a global common and serious environmental problem. In order to ensure drinking water safety, it is very important to accurately identify groundwater nitrate sources. The groundwater hydrochemistry and δ15N-NO3- and δ18O-NO3- isotopes were analyzed in samples taken from a suburb of Chongqingthe Longfeng karst trough-valley, which is mainly affected by agricultural activities, and the Longche karst trough-valley, which i