Derivative Pectrophotometry in the Visible region using absorbance versus log wavelength or wavenumber determination of cyanocobalamin in injection solutions
Abdel Aziz Wahbi, Ekram Hassan, Magda Barary, Essam Khamis, Dalia Hamdi
Two approaches have been adopted to increase the steepness of the slopes and the sharpness of the curvature of
an absorption curve in the visible region
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Derivative Pectrophotometry in the Visible region using absorbance versus log wavelength or wavenumber determination of cyanocobalamin in injection solutions | PJPS