Banca de QUALIFICAÇÃO: BELIZA MARIA DE SOUZA PINHEIRO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : BELIZA MARIA DE SOUZA PINHEIRO
DATA : 29/07/2016
HORA: 10:00
LOCAL: Auditório do NUPPRAR
TÍTULO:

ASSESSMENT OF POTENTIAL IMPACTS SALT ACTIVITY THROUGH THE MONITORING WATER QUALITY AND SEDIMENT OF TOMÁS-GALINHOS ESTUARY IN GALINHOS / RN

PALAVRAS-CHAVES:

Salt industry, Environmental Diagnosis, IQA, IT, Sediment toxicity

PÁGINAS: 100
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Química
SUBÁREA: Química Analítica
ESPECIALIDADE: Análise de Traços e Química Ambiental
RESUMO:

By rapid economic and industrial development, Rio Grande do Norte is inserted in this scenario as the largest producer of salt, sodium chloride, the country and holder of 97% of all salt produced. The Salina Diamante Branco - SDB in Galinhos, dismisses the whole process of brine in the study area in question, the Tomás-Galinhos estuary. In this context, it is essential to assess the possible impacts of this salt activity in adjacent estuaries. Thus, it carried out a monitoring of water quality and sediment to obtain an environmental assessment, including indicators of pollution, the Water Quality Index - IQA and Toxicidez Index. The samples were collected during two years on four points from May 2014 to May 2016. All results are properly related to the standards required by resolutions 357 of 17 March 2005 and 344 of March 25, 2004 , both of the National Environment Council - CONAMA. For non listed in the cited standards parameters, these were evaluated before its variability in the water body. The vast majority of results presented without great variations while maintaining the natural characteristics of the river, a fact that led the IQA all points as quality GOOD. In contrast, some levels of oxygen dissolved, dissolved nutrients and chlorophyll obtained indicated a tendency to contamination by organic matter. The high levels of phosphorus, also in the sediment have confirmed this trend. However, these contaminants are from other activities in the surrounding communities. Regarding metals in water, almost all were below the ICP-OES detection limit, indicating that these metals tend to be adduced by the dynamics of tidal or precipitates in the sediment, characterized as IT equal to 1, i.e. absent contamination. Zinc metal was detected only in water but also generated IT equals 1, it was within the required limits. Regarding metals in sediment only mercury and cadmium were not detected for the other gifts, were obtained also no toxicity. Nickel was the only metal with content above the ceiling, however, the content of the classified as level 1 in which it is not considered as likely to adverse effects to biota. The high values found calcium, magnesium and salinity showed the direct influence of the sewage and its accumulation, also related to tidal flows and rain.

MEMBROS DA BANCA:
Externo ao Programa - 2140818 - AMANDA DUARTE GONDIM
Presidente - 348475 - DJALMA RIBEIRO DA SILVA
Externo à Instituição - EMILY CINTIA TOSSI DE ARAUJO COSTA - UFRN
Externo ao Programa - 1199268 - JAILSON VIEIRA DE MELO