RefDoc
Haut

Faire une nouvelle recherche
Make a new search
Lancer la recherche


Titre du document / Document title

Determination of Ca, Mg, Na, and K in milk by AAS and flame emission spectroscopy using high dilution FIA manifolds based on stream splitting or a dialysis unit

Auteur(s) / Author(s)

LIMA J. L. F. C. (1) ; DELERUE MATOS C. (1) ; VAZ M. CARMO V. F. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) CEQUP/Departamento de Quimica-Fisica, Faculdade de Farmácia (UP) Rua Anibal Cunha, 164, 4000 Porto, PORTUGAL

Résumé / Abstract

This paper describes the development and evaluation of two high dilution FIA systems for the automatic determination of Ca, Mg, Na, and K in milks by atomic spectroscopy. The samples were adjusted for the species concentration levels prior to analysis by AAS and flame emission spectroscopy. One system uses the stream splitting method in which application of high pressure at the detector inlet adjusts the ion concentration to a linear relationship between the analytical signal and the species concentration to be measured. The other system uses a dialysis unit for concentration adjustments. The FIA manifold using stream splitting achieved a RSD ranging from 0.3-0.7% with sampling rates of 140 samples per hour. Using the dialysis unit, a RSD ranging from 0.5-1.9% for 120 samples per hour was achieved.

Revue / Journal Title

Atomic spectroscopy    ISSN  0195-5373   CODEN ASPND7 

Source / Source

1996, vol. 17, no5, pp. 196-200 (13 ref.)

Langue / Language

Anglais

Editeur / Publisher

Perkin Elmer, Shelton, CT, ETATS-UNIS  (1980) (Revue)

Mots-clés anglais / English Keywords

Analytical method

;

Atomic absorption spectrometry

;

Emission spectrometry

;

Flame spectrometry

;

Flow injection

;

Milk

;

Quantitative analysis

;

Calcium

;

Magnesium

;

Sodium

;

Potassium

;

Inorganic element

;

Mots-clés français / French Keywords

Méthode analytique

;

Spectrométrie absorption atomique

;

Spectrométrie émission

;

Spectrométrie flamme

;

Injection en écoulement

;

Lait

;

Analyse quantitative

;

Calcium

;

Magnésium

;

Sodium

;

Potassium

;

Elément minéral

;

Mots-clés espagnols / Spanish Keywords

Método analítico

;

Espectrometría absorción atómica

;

Espectrometría emisión

;

Espectrometría llama

;

Inyección flujo

;

Leche

;

Análisis cuantitativo

;

Calcio

;

Magnesio

;

Sodio

;

Potasio

;

Elemento inorgánico

;

Localisation / Location

INIST-CNRS, Cote INIST : 14108, 35400006093042.0040

Nº notice refdoc (ud4) : 2501971



Faire une nouvelle recherche
Make a new search
Lancer la recherche
Bas