标题：Avaliação do processo de salinização da água na Microbacia do Rio Doce, São João da Barra, RJ em decorrência do acidente ambiental no Superporto do Açu
期刊名称：Boletim do Observatório Ambiental Alberto Ribeiro Lamego
印刷版ISSN：1981-6197
电子版ISSN：2177-4560
出版年度：2016
卷号：9
期号：1
页码：35-48
语种：English
出版社：Essentia Editora
摘要：The use of irrigation in agricultural crops is critical to ensure adequate productivity, especially in regions with water shortage and climate with well-defined rainy and dry seasons. This study aimed at analyzing the environmental accident in Deposit 4 of LLX Açu Operações Portuárias S.A., in November 2012, and assess the quality of water used for irrigation of farms in the Doce River watershed, São João da Barra, RJ, in March 2013. The samples were collected from 13 to 16 March 2013, and the analyses were performed at Laboratório Campo, located in Paracatu-MG. The following parameters were analyzed: electrical conductivity (EC), chloride, sodium, calcium, magnesium and sodium adsorption ratio (SAR). During the environmental accident in Deposit 4, in November 2012, the EC of the Quitingute Water Channel reached the level of 42,000 µS/cm. However, in March 2013, the water of this channel showed no restrictions as to use in irrigation. The results of analyses of groundwater wells showed that approximately 11% of the samples were above the ideal EC and that none had restrictions on sodium danger according to the SAR classification.
关键词：Agriculture. Water quality. Irrigation. Environmental risks.;Agricultura. Qualidade de água. Irrigação. Riscos ambientais.
