Determination of Iron in Foods by the Atomic Absorption Spectrophotometric and Colorimetric Methods

Siong, Tee.E and Choo, Khoor Swan and Shahid, Siti Mizura (1989) Determination of Iron in Foods by the Atomic Absorption Spectrophotometric and Colorimetric Methods. Pertanika, 12 (3). pp. 313-322.

[img] PDF
3638Kb

Abstract

A competitive study of the determination of iron in a wide variety of foods was carried out using the atomic absorption spectrophotometric (AAS) and phenanthroline colorimetric methods. A total of156foods, belonging to 8 food groups were studied. FOT each food (determined in duplicate), ash solution was prepared and an aliquot subjected to AAS analysis, while another aliquot was determined by the phenanthroline method. Mean values for duplicate analysis of each food determined by the two methods were tabulated according to food groups. Results obtained by the AAS and phenanthroline methods showed good general agreement, with a correlation coefficient of 0.987. Statistical analysis using paired t-test showed that fOT 5 food groups, there was no significant difference (P < 0.05) in Results given y the two methods. Although a significant difference was observed fOT the remaining 3 groups, the t-statistic calculated was just above the significance level. Recovery values given fly the two methods were satisfactory, and were not significantly different. Variance for the phenanthroline method was, however, slightly higher. Results of the study suggest that both methods can be used satisfactorily for the analysis of this mineral.

Item Type:Article
Keyword:Iron in foods, atomic absorption spectrophotometry, calorimetry.
ID Code:2676
Deposited By: Nur Izzati Mohd Zaki
Deposited On:17 Nov 2009 01:04
Last Modified:27 May 2013 07:02

Repository Staff Only: Edit item detail

Document Download Statistics

This item has been downloaded for since 17 Nov 2009 01:04.

View statistics for "Determination of Iron in Foods by the Atomic Absorption Spectrophotometric and Colorimetric Methods"


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.