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Quantitative Spot-Test Analysis of Metformin in Pharmaceutical Preparations Using Ultraviolet-Visible Diffuse Reflectance Spectroscopy
Quantitative Spot-Test Analysis Metformin Pharmaceutical Ultraviolet-Visible Diffuse Reflectance Spectroscopy
2010/9/17
A quantitative spot-test for the determination of metformin in pharmaceutical preparations using diffuse UV-visible reflectance is reported. The procedure is quite simple, involving in the formation o...
Use and Limitations of Second-Derivative Diffuse Reflectance Spectroscopy in the Visible to Near-Infrared Range to Identify and Quantify Fe Oxide Minerals in Soils
Crystal Field Bands Diffuse Reflectance Spectroscopy Goethite Hematite Intervalence Charge Transfer Iron Oxides Magnetite
2011/12/8
Abstract: We measured the visible to near-infrared (IR) spectra of 176 synthetic and natural samples of Fe oxides, oxyhydroxides and an oxyhydroxysulfate (here collectively called “Fe oxides”), and of...