Related Experiment Video
Updated: May 23, 2026
Design and Use of a Full Flow Sampling System (FFS) for the Quantification of Methane Emissions
Published on: June 12, 2016
Determination of Total Selenium in Infant Formulas: Comparison of the Performance of FIA and MCFA Flow Systems
Mariela Pistón1, Moisés Knochen
1Department of Analytical Chemistry, School of Chemistry, Universidad de la República (UdelaR), Avenue Gral. Flores 2124, 11800 Montevideo, Uruguay.
Abstract:
Two flow methods, based, respectively, on flow-injection analysis (FIA) and on multicommutated flow analysis (MCFA), were compared with regard to their use for the determination of total selenium in infant formulas by hydride-generation atomic absorption spectrometry. The method based on multicommutation provided lower detection and quantification limits (0.08 and 0.27 μg L(-1) compared to 0.59 and 1.95 μ L(-1), resp.), higher sampling frequency (160 versus. 70 samples per hour), and reduced reagent consumption. Linearity, precision, and accuracy were similar for the two methods compared. It was concluded that, while both methods proved to be appropriate for the purpose, the MCFA-based method exhibited a better performance.
More Related Videos
08:42Using Multi-fluorinated Bile Acids and In Vivo Magnetic Resonance Imaging to Measure Bile Acid Transport
Published on: November 27, 2016
08:21Determination of Inorganic Arsenic in a Wide Range of Food Matrices using Hydride Generation - Atomic Absorption Spectrometry.
Published on: September 1, 2017
