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Final Report/Thesis 2018
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====Processing the Data==== The data from the ICP-MS was then put into a software called Iolite, this is how we managed the data and removed any anomalies [29]. The overall waveform of the isotopes in the hair sample for several spots can be seen in Figure 20. An enhanced and zoomed in version of one of the spots is shown in Figure 21. [[File:ZFigure23.jpg|thumb|500px|center|Figure 20. Waveform of the isotopes in several spots]] [[File:ZFigure24.jpg|thumb|500px|center|Figure 21. Enhanced and zoomed into a spot]] A brief explanation of the waveform composition will be done. Each waveform is an individual isotope, where the top waveform is the average of all the other waveforms. The first 20 seconds of the waveform, shows a relative flat line, this is the laser ablation system calibrating itself. This information is not useful. The waveform peaks up (represented with a square box), this is when the laser just hits the surface of the hair. Then the waveform is a flat line, this is when the laser is ablating the inside of the hair. This is the important information. In some cases the waveform peaks up at the end, this is the laser ablating through the hair and onto the sticky tape and quartz slide. To compare the results more precisely, two sets of data were captured, the surface of the hair and inside the hair. Only getting these results, meant there was so contamination from the sticky tape or the calibration set up. Lastly the results were outputted into one comprehensive Excel file, with all the necessary data, a portion of the data can be seen in Figure 22. [[File:ZFigure25.jpg|thumb|500px|center|Figure 22. Portion of the data]]
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