A Statistical Review of Alternative Zinc and Copper Extraction from Mineral. Fertilizers and Industrial By-Products

Autor(es)

Cenciani de Souza, Camila Prado ^[1] ; de Abreu, Cleide Aparecida ^[1] ; Coscione, Aline Renee ^[1] ; de Andrade, Cristiana Alberto ^[2] ; Junqueira Teixeira, Luiz Antonio ^[1] ; Consolini, Flavia ^[3]

Afiliação do(s) autor(es)

^[1] Agron Inst Campinas, Ctr Soils & Environm Resources, Caixa Postal 28, BR-13012970 Campinas, SP - Brazil

^[2] Embrapa Environm, BR-13820000 Jaguariana, SP - Brazil

^[3] Brazilian Minist Agr Livestock & Supply, Natl Agr Lab, BR-13208051 Jundiai, SP - Brazil

• Tipo de documento: Artigo de Revisão
• Fonte: JOURNAL OF AOAC INTERNATIONAL; v. 101, n. 1, p. 190-195, JAN-FEB 2018.
• Citações Web of Science: 0

Resumo

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% HCI, and 10% H2SO4 are statistically equivalent to the standard method, consisting of hot-plate digestion using concentrated HCI. 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 HCI 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% HCI extraction was equivalent to the standard method for Zn, and the results of the USEPA 3051a and 10% HCI 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. (AU)

• Processo FAPESP: 09/01946-0 - Disponibilidade de cobre e zinco em fertilizantes minerais
• Beneficiário: Cleide Aparecida de Abreu
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 10/04076-3 - Disponibilidade de Cobre e Zinco em Fertilizantes Minerais
• Beneficiário: Camila Prado Cenciani de Souza
• Modalidade de apoio: Bolsas no Brasil - Mestrado