Determination of essential metals in complete diet feed by flow injection and flame atomic absorption spectrometry

Autor:	Amparo Salvador, M.T Vidal, C Llabata, M. C. Pascual-Martí
Rok vydání:	2002
Předmět:	Flow injection analysis Chromatography Microwave oven Extraction (chemistry) Analytical chemistry Hydrochloric acid Analytical Chemistry law.invention Dilution chemistry.chemical_compound chemistry Ashing law Sample preparation Atomic absorption spectroscopy Spectroscopy
Zdroj:	Microchemical Journal. 72:221-228
ISSN:	0026-265X
DOI:	10.1016/s0026-265x(02)00037-1
Popis:	A prior study of different sample pre-treatments for the determination of metallic elements in complete diet feeds was performed in order to choose the most suitable for these samples. The studied pre-treatment were: acid extraction (lixiviation), wet digestion (on microwave oven) and dry ashing mineralization (calcination). Lixiviation (acid extraction) with hydrochloric acid was selected due to its accuracy, fast and simple pre-treatment procedure. Due of the different levels of concentration of the metallic elements in the samples, the same manifold was used but with small variations. Copper (with on-line pre-concentration by chelating Chelex-100 resin), calcium (with on-line dilution) and iron determination gave suitable accuracy and precision and required a little time for analysis. Five different samples were analyzed by flow injection and the results were contrasted with dry ashing mineralization in batch procedure and with the labeled contents.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1e64ae063d64ee4f901aaebb61d3a271 https://doi.org/10.1016/s0026-265x(02)00037-1 Zobrazit plný text záznamu Full Text from ScienceDirect