analise fisico-química de potencial de Hidrogenio, alcalinidade e presença de compostos especifico de sulfetos na agua do poço jorrante localizado na cidade de santa cruz do piaui

Abstract

This course completion work aims to investigate the quality of water from the jorrante well in Santa Cruz do Piauí, focusing on the analysis of physical-chemical parameters, such as pH, alkalinity and presence of sulfides, which can impact the health of users in leisure activities. The research was based on a bibliographical review that addresses water resources, norms and quality standards, physical-chemical properties of water and hydrogeological characteristics of the region. The methodology consists of four steps: sample collection, pH measurement, alkalinity analysis and sulfide analysis. The sample was tested in the laboratory of the Federal Institute of Education, Sciences and Technology – IFPI, Campus Picos. The results demonstrated that the pH of the water was 7.0, within the range permitted by Ordinance nº 888/2021. An alkalinity analysis revealed a value of 420 mg/L CaCO₃, which exceeds the regulatory limit of 20 to 200 mg/L, posing potential health risks such as digestive problems. On the other hand, the sulfide analysis did not detect the presence of these ions, indicating that the water was free from risks associated with these compounds. The suggestions highlight the effectiveness of the methodology applied and the importance of monitoring the quality of the water used by the population. The results highlight the need for specific control over the chemical and physical parameters of water, essential to guarantee public health and environmental preservation, in addition to providing relevant information for future water quality management policies. The research had positive effects and achieved the desired objectives.