Spectroscopic study of some factors affecting atomic absorption measurements and using simulation techniques to treat these factors

Abstract

The aim of this thesis is to study some factors that affect atomic absorption measurements and to find ways to simulate these measurements. Some factors are controlled by the user, and there are other factors depending on the device used in the appointment. In this study, a high-sensitivity spectral light spectrometer was used to determine and accurately determine low concentrations in three samples: sediments from the Suez Canal, agricultural fertilizers with high concentrations in potassium and magnesium as well as some vegetables, but some factors that cannot be controlled. The aim of the present work is to treat some factors affecting atomic absorption measurements by using simulation methods to determine an unknown concentration of sample, the first method by using line-of-best-fit through the experimental points using Excel programmed and using TREND Function to calculate the unknown concentration direct from this function, The second method by using the Approximation programmed which built-in with genetic programming (GP) concept which can use the present data of standard solution between the concentrations vs. absorbance and draw the characteristic curve, equation for each element ,so this method was found to be good for most of the determined elements ,give result near to experimental results.