Avaliação espacial e temporal dos teores de sais nas águas subterrâneas no município de Boa Vista - PB.

Abstract

The objective was to evaluate spatial and temporal salinity of groundwater in the city of Boa Vista-PB. The study was to research field the city of Boa Vista, totaling an area of 446.30 km2, located between latitudes coordinates 7º09'03,7 "and 7º22'19,7" south latitude and 36º05'25,6 "36º22'22,8 and" west longitude. the climate, according to Köppen classification, is the BSh type ', which means hot semiarid, with average rainfall is 416 mm / year. the survey began in October 2014, extending to August 2015, which was collected in 02 times for the average salt content of the wells surveyed in reference to the first stage were collected 86 samples from sources throughout the municipality, performing a diagnosis the quality of their groundwater. the second time was reduced because some wells dried up and others were broken and can only be collected 76 points and the same were georeferenced. the points were georeferenced using a GPS 12XL, and photographed with digital machine. the collection was carried out at the point where water flows into the flow, avoiding the most contaminated reservoirs (water cooler), but getting directly pumping. the salt content were analyzed expressed by the electrical conductivity of water (CEA), total dissolved salts (TDS), cations, anions, hydrogen potential (pH), and sodium adsorption ratio (SAR) in water in the city of Boa Vista , PB.