Mn is chemical element, one of the silvery white, hard, brittle metals of Group 7 (VIIb) of the periodic table. It was recognized as an element in 1774 by the Swedish chemist Carl Wilhelm Scheele while working with the mineral pyrolusite and was isolated the same year by his associate, Johan Gottlieb Gahn. Although it is rarely used in pure form, manganese is essential to steelmaking.
Published in Chapter:
Optimization of a Spectrophotometric Flow Injection: Method for Determination Copper and Manganese in Wines by Design Experiments
Germán Adán Sánchez Gallegos (Universidad Autónoma de Baja California, México), Maria del Pilar Haro Vazquez (Universidad Autónoma de Baja California, Mexico),
José Manuel Cornejo-Bravo (Universidad Autónoma de Baja California, Mexico), and
Eugenia Gabriela Carrillo-Cedillo (Universidad Autónoma de Baja California, Mexico)
Copyright: © 2020
|Pages: 29
DOI: 10.4018/978-1-7998-1518-1.ch008
Abstract
This chapter presents the optimization of the hydrodynamic and chemical parameters of the FIA system in the determination of copper and manganese in wine samples by VIS spectrophotometry. This technique has been based on the injection of liquid samples in the non-segmented movement, within a continuous carrier current of a suitable liquid. The injected sample forms a zone that disperses on its way to a detector. The later continuously records the absorbance or other physical parameters, since it continuously passes the sample material through the flow cell, using the factorial designs Plackett-Burman, Box-Behnken, and the factorial design 2^4. The methods have the advantages of low-cost, easy availability of chemicals, and instrumentation and straightforward application to real samples.