Hidrogeoquimica e a contaminação por nitrato em agua subterranea no bairro Piranema, Seropedica - RJ

TL;DRAbstract

Nitrate is found in waters, vegetable and animal tissues.Due to man activities, the concentration o f nitrate in waters has increased in the last decades and a maximum allowed value for drinkable water was established by regulatory agencies.A common source o f aquifers contamination by the nitrate is the use of in situ sanitation systerns, like as cesspits and ditches.This work has been developed in Piranema neíghborhood, between Itaguaí and Seropédica municipalities , in the state o f Rio de Janeiro, where also the Piranema aquifer is situated.The maín purposes o f the study were to determine the spatial and temporal variations of nitrate concentration in the Piranema aquifer and the consequent change in the groundwater's composítion and quality.Fourteen shallow wells (untíll5 meters deep) ofhouses in the neighborhood were monitored for one year, with the monthly measurement o f physical-chernical parameters (pH, Eh, temperature, conductivity) and the chernical analysis of water sarnp

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