Abstract：A determination method of gold in resin by flame atomic asorption spectrometry was proposed after the sample was pretreated by ignition and HNO3-HClO4 method. The effect of sample weight, ashing temperature and determination medium on determination was investigated to obtain optimal experimental conditions. The interference of coexisting ions was discussed. It was found that, gold concentration in range of 0.5-20 μg/mL exhibited good linearity to absorbance. The linear correlation coefficient was 0.999 3. Detection limits of this two method were 0.17 and 0.19 μg/mL, respectively. Two methods were applied to the determination of actual samples, and the results were consistent with those obtained by fire assaying-gravimetry. The relative standard deviation (RSD, n=11) was 1.5 % and 1.6%, respectively. The recoveries were 97%-101% and 98%-102%, respectively.
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