Here - Meta Marketing e Eventos

22 nd Salt Water Intrusion Meeting: Salt Water Intrusion in Aquifers: Challenges and Perspectives1. INTRODUCTIONThe implementation of programs for groundwater monitoring helps in improving theirplanning, protection and management.The karst regions, such as micro-region of Irecê usually are areas of great economic interestand hydrogeological because, in most cases, although having a low density of surfacedrainage, have valuable water reserves in the subsoil (Bastos Leal & Silva , 2004). Fertilesoils and rugged topography of this region favor some agricultural activities, which is themain economic activity, and groundwater is heavily used for irrigation purposes, due tolimited availability of surface water.The research area is formed by a polygon comprising the municipalities of Irecê and Lapão,the state of Bahia, with an area of approximately 250km² (Nossa, 2011).2. MATERIALS AND METHODSNossa (2011) analyzed a total of 72 parameters used to diagnose hydrochemical and isotopicarea, defined based on Ordinance 518/2004 of the Ministry of Health, which sets maximumlimits for drinking water standards for human consumption, and Resolution CONAMA396/2008 establishing these values for several purposes than human consumption, such aswatering livestock, irrigation and recreation. The collection periods were selected based ondata obtained from the rainfall recorded at the Station Irecê (Figure 1).2.1. Physical-chemical analysisThe physical and chemical analyzes were performed at the Laboratory of Mineral Waters ofthe CPRM (LAMIN), based on SMEWW (Clesceri, et al., 1998), considering the cations:aluminum, antimony, arsenic. barium, beryllium, boron, cadmium, calcium, lead, cobalt,copper, chromium, tin, strontium, iron, lithium, magnesium, manganese, molybdenum, nickel,potassium, selenium, silicon, sodium, titanium, vanadium and zinc in addition to the anions:bromide, chloride, fluoride, phosphate, nitrate, nitrite, and sulfate. Were selected for analysisalso carbonate and bicarbonate, carbonate according to the lithology of the area and theparameters total hardness, electrical conductivity, total dissolved solids and pH, a total of 40physical and chemical parameters.2.2. Isotopic analysisThe methods used for collection and storage of samples for analysis of oxygen-18, deuterium,deuterium excess and dissolved inorganic carbon ( 18 O, D, d, 13 C CID ) were determinedaccording to the instructions of the International Atomic Energy Agency (IAEA, 2002) andanalyzes were performed at the Laboratory of Applied Nuclear Physics, Federal University ofBahia (LFNA-CPGG/IF-UFBA).78