A statistical comparison of platinum plant digestion data obtained from GFAAS and ICP-OES
To date, to our knowledge there have not been reports on the comparison between Graphite Furnace Atomic Absorption Spectroscopy (GFAAS) and Inductively Coupled Plasma Optical Emission Spectroscopy (ICPOES) for the determination of low levels of platinum. Although GFAAS and ICP-OES are very different instrumental techniques, the analysis of environmental platinum plant digestion samples showed that there was no significant difference between the two techniques at the 95% confidence interval. The result of the variance tests or F-test was much smaller than the tabulated F-test value. The F-test values obtained for the analysis ranged from 0.00 to 2.67 and the tabulated value was 19.16. In addition, a comparison of the means at the 95% confidence interval showed that the means obtained for each sample were not significantly different. The values obtained by the comparison ranged from 1.63 to 0.039 and the tabulated Student's t-test value was 3.182.