An Evaluation of a Point Source Brine Discharge into a Riverine System and Implications for TDS Limitations

Autor:	R. J. Currie, T. W. Valenti, B. S. Echols, Donald S. Cherry
Rok vydání:	2012
Předmět:	biology Chemistry Health Toxicology and Mutagenesis Ecological Modeling Sodium Ceriodaphnia dubia chemistry.chemical_element Mussel Contamination Total dissolved solids biology.organism_classification Pollution Brining Environmental chemistry Toxicity Effluent
Zdroj:	Human and Ecological Risk Assessment: An International Journal. 18:588-607
ISSN:	1549-7860 1080-7039
Popis:	The North Fork Holston River (NFHR) below Saltville, Virginia, has been the subject of many studies due to years of contamination from a closed chloroalkali plant. In addition, a point source brine discharge high in total dissolved solids (TDS) may also be adversely affecting aquatic biota. This study assessed the toxicity of the brine discharge to selected test organisms, including two freshwater mussel species and also discusses implications for development of a TDS limit based on brine toxicity. Ceriodaphnia dubia was the most sensitive organism in acute and chronic brine toxicity tests. Bivariate analysis of the brine conductivity and C. dubia LC50 values showed no relationship (p = .1756); however, LC50 values were strongly related (r2 = 0.8818) to sodium concentrations in the brine discharge. A comparison of the results from acute tests with the brine effluent and the reference toxicant sodium chloride (NaCl) demonstrated that organisms were more sensitive to NaCl. Brine discharge toxicity ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5586a7d17b82f75cb3cd98ecacc66e2e https://doi.org/10.1080/10807039.2012.672892 Zobrazit plný text záznamu