| Texto completo | |
| Autor(es): |
Costa, Rayane C. Vieira
;
Ferreira, Edilene C.
;
Neto, Jose A. Gomes
;
Virgilio, Alex
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ANIMAL FEED SCIENCE AND TECHNOLOGY; v. 329, p. 14-pg., 2025-11-01. |
| Resumo | |
A novel method using a closed-vessel conductively heated digestion system (CHDS) with diluted nitric acid was developed for the decomposition of animal foods and determination of B, C, Ca, Cu, Fe, K, Mg, Mn, P, S and Zn by inductively coupled plasma optical emission spectrometry (ICPOES). The effects of acidity were evaluated by digesting samples using 2 mL of HNO3 at 3.5, 7.0, and 14 mol L- 1 plus 1 mL of 30 % (w w- 1) H2O2, and the accuracy was checked by analyzing certified reference materials. Recoveries for all analytes varied in the 81-113 % (3.5 mol L- 1), 83-114 % (7.0 mol L- 1), and 80-114 % (14 mol L- 1) intervals. Commercial samples of cat, dog, rabbit, bird, fish, and horse foods were analyzed, and the results found by CHDS were equivalent to those obtained by the comparative benchmark microwave-assisted digestion (MW-AD) method. Limits of quantification obtained by CHDS using HNO3 3.5 mol L- 1, 7 mol L- 1, and 14 mol L- 1 were also comparable to those observed with MW-AD. The dissolved organic carbon (DOC) determined in all digests was lower than 2000 L- 1, which is considered acceptable for determinations by ICP techniques. The analytical greenness metric for sample preparation (AGREEprep) furnished a score of 0.50 for digestions with 3.5 mol L- 1, suggesting a sustainable and environmentally friendly alternative method for sample preparation. (AU) | |
| Processo FAPESP: | 21/01912-0 - Avaliação de procedimentos analíticos para determinação de teores totais e frações bioacessíveis de nutrientes e elementos tóxicos em farinhas funcionais |
| Beneficiário: | Alex Virgilio |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 24/02879-4 - Desenvolvimento de novas aplicações em análise espectroscópica inorgânica |
| Beneficiário: | José Anchieta Gomes Neto |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |