Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/6800
Título: A sequential injection system for the in-line digestion and colorimetric determination of phosphorus in milk
Autor: Lima, M.J. Reis
Fernandes, S.M.V.
Rangel, A.O.S.S
Palavras-chave: Sequential injection
Milk
Total phosphorus
In-line UV/photo-oxidation
spectrophotometry
Data: 2002
Citação: LIMA, M.J.Reis; FERNANDES, S.M.V.; RANGEL, A.O.S.S. - A sequential injection system for the in-line digestion and colorimetric determination of . Journal of Food Science. ISSN 0022-1147. Vol. 67, n.º 9 (2002), p. 3280-3283
Resumo: A sequential injection analysis (SIA) system involving in-line digestion for the determination of total phosphorus in milk is presented. The developed manifold consists mainly of 2 phases: conversion of all forms of phosphorus into orthophosphates by hydrolysis and oxidation catalyzed by UV radiation (necessary for the efficient oxidation of organic phosphates) and spectrophotometric determination of the phosphomolybdenum blue formed. The proposed method was applied to several cow milk samples and the results were in good agreement with those provided by the reference method, with a maximum relative deviation of 5.2%. The detection limit of the method was around 2 mg P/L with a sampling rate of approximately 17 h−1.
Peer review: yes
URI: http://hdl.handle.net/10400.14/6800
Versão do Editor: The definitive version is available at http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2621.2002.tb09578.x/abstract
Aparece nas colecções:ESB - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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