Groundwater NO_3 and f contamination processes in pushkar valley, rajasthan as reflected from ~18O isotopic signature and ~3H recharge studies

摘要

Agricultural activity in the Pushkar Valley, Rajasthan is constrained due to limited avail- ability of good quality water. In this context, occurrence of nitrate and fluoride in the groundwater was investigated and reported. Integration of stable isotope (δ~18O) data with recharge characteristics (based on ~3H-tracer studies) helps in clearly characterizing the processes controlling contamination by point and non-point sources.