Atomic absorption emission Lab Report Example | Topics and Well Written Essays - 1250 words

Atomic absorption emission - Lab Report exerciseWhen a graph of the light intensity against Na+ concentration for the various solutions is plotted, it is observed that there is a linear relationship between the two parameters. This is indicated below.The warp has a clear linear relationship at the start but this change as the concentration and the light intensity is increased. At high-pitched levels, the curved shape tilts away from linearity as there are to a greater extent ions in the solution leading to trim down light intensity of the flare up. As more Na+ ions are in more concentrated solutions, they tend to atomize faster as concentrated solutions have less water and more Na+ ions. In addition to this, the curve has some imperfections in its linearity at higher levels of Na+ ion concentration and high light intensity. This is due to the fact that at such level, the a number of excited atoms gets to a dress beyond which they cannot atomize without dropping back to the gr ound as coalesced Na. The intensity of the light in addition changes due to self-absorption where at high concentration the more atoms in the flame absorb more light. This makes the curve bend towards the x-axis (concentration axis).In addition to this, its clearly evident that the amount of heat emitted by the flame highly depends on the number of Na atoms in the flame. Therefore, to attain a perfect liner relationship, we faculty need to dilute the samples during calibration as to have a small amount of Na+ ions in the solution. At relatively high concentration, there are many atoms in the flame edges that absorb more light emitted by the inner atoms and then a reduced light intensity.The signal is fairly inconstant as the intensity of the light emitted keeps changing over time. This mainly happens due to the change in the atomization rates over time. This leads to the signals relayed changing over time to reflect the changes in the atomization rates hence the