Title:	Comparative analysis between ecotoxicity of nitrogen-, phosphorus-, and potassium-based fertilizers and their active ingredients.
Authors:	SIMPLICIO, N. de C. S. MUNIZ, D. H. de F. ROCHA, F. R. M. MARTINS, D. C. DIAS, Z. M. B. FARIAS, B. P. da C. OLIVEIRA FILHO, E. C. de
Affiliation:	NATHAN DE CASTRO SOARES SIMPLICIO, CPAC; DAPHNE HELOISA DE FREITAS MUNIZ, CPAC; FERNANDA REGINA MOREIRA ROCHA, CENTRO UNIVERSITÁRIO DE BRASÍLIA; DENIS CAVALCANTI MARTINS, CENTRO UNIVERSITÁRIO DE BRASÍLIA; ZÉLIA MALENA BARREIRA DIAS, UNIVERSIDADE DE BRASÍLIA; BRUNO PEREIRA DA COSTA FARIAS, CENTRO UNIVERSITÁRIO DE BRASÍLIA; EDUARDO CYRINO DE OLIVEIRA FILHO, CPAC.
Date Issued:	2017
Citation:	Toxics, v. 5, n. 2, 2017.
Pages:	13 p.
Description:	This study aimed to analyze the ecotoxicity of nitrogen-, phosphorus-, and potassium-based compounds to organisms of two different trophic levels in order to compare the toxic effect between high-purity substances and these substances as components of fertilizers. Dilutions were made with the fertilizers’ potassium chloride, potassium nitrate, superphosphate, urea, and their equivalent reagents, to conduct assays to establish the acute lethal concentration for half of the population (LC50). Ten individuals of the benthic snail Biomphalaria glabrata and the fish Danio rerio were exposed to each concentration of tested compounds. As a result, the toxicity levels of potassium chloride, potassium nitrate, and urea were obtained for B. glabrata and D. rerio, with the fish being more susceptible to potassium chloride in the fertilizer and the snail to potassium nitrate and urea, in both commercial and reagent forms. Regarding superphosphate, no significant toxicity was found. This study concluded that among the tested substances, KNO3 and KCl were the most toxic substances and urea the least toxic. It was not possible to establish the most sensitive species since, for KCl, the fish were more susceptible to the fertilizer and the snail to the reagent, while for KNO3 the opposite was observed.
NAL Thesaurus:	Bioassays Agriculture Nitrogen Phosphorus Potassium Fertilizers
DOI:	https://doi.org/10.3390/toxics5010002
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAC)