Spectro-photometric determinations of Mn, Fe and Cu in aluminum master alloys

14th International Symposium on Advanced Materials

Naveed, Rehan A.^1 ; Shan, A.^2 ; Afzal, M.^1 ; Saleem, J.^1 ; Noshad, M.A.^1

Soan Enterprises, P. O. Box 2723, Islamabad, Pakistan^1

Department of Physics, University of Engineering and Technology, Lahore, Pakistan^2

关键词: Analytical samples;    Calibration curves;    Certified reference materials;    Dilution technique;    Instrumental error;    Maximum sensitivity;    Photometric determinations;    Spectro-photometric method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/146/1/012048/pdf
DOI  :  10.1088/1757-899X/146/1/012048

来源: IOP

【 摘 要 】

Highly reliable, fast and cost effective Spectro-photometric methods have been developed for the determination of Mn, Fe & Cu in aluminum master alloys, based on the development of calibration curves being prepared via laboratory standards. The calibration curves are designed so as to induce maximum sensitivity and minimum instrumental error (Mn 1mg/100ml-2mg/100ml, Fe 0.01mg/100ml-0.2mg/100ml and Cu 2mg/100ml-10mg/ 100ml). The developed Spectro-photometric methods produce accurate results while analyzing Mn, Fe and Cu in certified reference materials. Particularly, these methods are suitable for all types of Al-Mn, Al-Fe and Al-Cu master alloys (5%, 10%, 50% etc. master alloys).Moreover, the sampling practices suggested herein include a reasonable amount of analytical sample, which truly represent the whole lot of a particular master alloy. Successive dilution technique was utilized to meet the calibration curve range. Furthermore, the workout methods were also found suitable for the analysis of said elements in ordinary aluminum alloys. However, it was observed that Cush owed a considerable interference with Fe, the later one may not be accurately measured in the presence of Cu greater than 0.01 %.