Data/hora: 11/06/2024 00:29:46

Biblioteca(s): 	Embrapa Meio Ambiente.	
Data corrente: 	08/02/2018	
Data da última atualização: 	08/02/2018	
Autoria: 	SOUZA, C. P. C. de; ABREU, C. A. de; COSCIONE, A. R.; ANDRADE, C. A. de; TEIXEIRA, L. A. J.; CONSOLINI, F.	
Afiliação: 	CAMILA PRADO CENCIANI DE SOUZA, IAC; CLEIDE APARECIDA DE ABREU, IAC; ALINE RENEE COSCIONE, IAC; CRISTIANO ALBERTO DE ANDRADE, CNPMA; LUIZ ANTONIO JUNQUEIRA TEIXEIRA, IAC; FLAVIA CONSOLINI, Ministério da Agricultura, Pecuária e Abastecimento.	
Título: 	A statistical review of alternative zinc and copper extraction from mineral fertilizers and industrial by-products.	
Ano de publicação: 	2017	
Fonte/Imprenta: 	Journal of AOAC international, v. 101, n. 1, p. 190-195, 2017.	
DOI: 	https://doi.org/10.5740/jaoacint.15-0327	
Idioma: 	Inglês	
Conteúdo: 	Rapid, accurate, and low-cost alternative analytical methods for micronutrient quantification in fertilizers are fundamental in QC. The purpose of this study was to evaluate whether zinc (Zn) and copper (Cu) content in mineral fertilizers and industrial by-products determined by the alternative methods USEPA 3051a, 10% HCl, and 10% H2SO4 are statistically equivalent to the standard method, consisting of hot-plate digestion using concentrated HCl. The commercially marketed Zn and Cu sources in Brazil consisted of oxides, carbonate, and sulfate fertilizers and by-products consisting of galvanizing ash, galvanizing sludge, brass ash, and brass or scrap slag. The contents of sources ranged from 15 to 82% and 10 to 45%, respectively, for Zn and Cu. The Zn and Cu contents refer to the variation of the elements found in the different sources evaluated with the concentrated HCl method as shown in Table 1. A protocol based on the following criteria was used for the statistical analysis assessment of the methods: F-test modified by Graybill, t-test for the mean error, and linear correlation coefficient analysis. In terms of equivalents, 10% HCl extraction was equivalent to the standard method for Zn, and the results of the USEPA 3051a and 10% HCl methods indicated that these methods were equivalents for Cu. Therefore, these methods can be considered viable alternatives to the standard method of determination for Cu and Zn in mineral fertilizers and industrial by-products in future research for their complete validation.	
Palavras-Chave: 	Micronutriente.	
Thesagro: 	Análise quantitativa; Cobre; Fertilizante; Zinco.	
Thesaurus Nal: 	Copper; Fertilizer analysis; Trace element fertilizers; Zinc.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
Registro original: 	Embrapa Meio Ambiente (CNPMA)	
Exemplares: 	CNPMA - (16017-1) - UPC - AP - DD -  -  -  - DIS