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A Simple Automated Method for the Determination of Nitrate and Nitrite in Infant Formula and Milk Powder Using Sequential Injection Analysis
Joint Authors
Knochen, Moisés
Pistón, Mariela
Mollo, Alicia
Source
Journal of Analytical Methods in Chemistry
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-07-05
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
A fast and efficient automated method using a sequential injection analysis (SIA) system, based on the Griess, reaction was developed for the determination of nitrate and nitrite in infant formulas and milk powder.
The system enables to mix a measured amount of sample (previously constituted in the liquid form and deproteinized) with the chromogenic reagent to produce a colored substance whose absorbance was recorded.
For nitrate determination, an on-line prereduction step was added by passing the sample through a Cd minicolumn.
The system was controlled from a PC by means of a user-friendly program.
Figures of merit include linearity (r2 > 0.999 for both analytes), limits of detection (0.32 mg kg−1 NO3-N, and 0.05 mg kg−1 NO2-N), and precision (sr%) 0.8–3.0.
Results were statistically in good agreement with those obtained with the reference ISO-IDF method.
The sampling frequency was 30 hour−1 (nitrate) and 80 hour−1 (nitrite) when performed separately.
American Psychological Association (APA)
Pistón, Mariela& Mollo, Alicia& Knochen, Moisés. 2011. A Simple Automated Method for the Determination of Nitrate and Nitrite in Infant Formula and Milk Powder Using Sequential Injection Analysis. Journal of Analytical Methods in Chemistry،Vol. 2011, no. 2011, pp.1-7.
https://search.emarefa.net/detail/BIM-990578
Modern Language Association (MLA)
Pistón, Mariela…[et al.]. A Simple Automated Method for the Determination of Nitrate and Nitrite in Infant Formula and Milk Powder Using Sequential Injection Analysis. Journal of Analytical Methods in Chemistry No. 2011 (2011), pp.1-7.
https://search.emarefa.net/detail/BIM-990578
American Medical Association (AMA)
Pistón, Mariela& Mollo, Alicia& Knochen, Moisés. A Simple Automated Method for the Determination of Nitrate and Nitrite in Infant Formula and Milk Powder Using Sequential Injection Analysis. Journal of Analytical Methods in Chemistry. 2011. Vol. 2011, no. 2011, pp.1-7.
https://search.emarefa.net/detail/BIM-990578
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-990578