Determination of High Content of Tin in Geochemical Samples by Solid Emission Spectrometry
YAO Jian-zhen1, HAO Zhi-hong1*, TANG Rui-ling1, LI Xiao-jing2, LI Wen-ge1, ZHANG Qin1
1. Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China 2. Entry-Exit Inspection and Quarantine Bureau of Guilin, Guilin 541000, China
Abstract:A method for the determination of high content of tin in geochemical samples by solid emission spectrometry was presented. The dedicated high content tin spectrum standard series was developed. K2S2O7, NaF, Al2O3 and carbon powder were used as buffers and Ge was used as internal standard, and the ratio of sample/matrix/buffer is 1∶1∶2. A weak sensitive line (Sn 242.170 0 nm) was used as the analytical line. The technologies of vertical electrodes, AC arc overlap spectrograph, interception of the exposure, quantitative computer translation spectrum and background correction were used. The determination range is 100~22 350 μg·g-1, the detection limit is 16.64 μg·g-1, and the precision is (RSD, n=12) 4.11%~6.46%. The accuracy of the method has been verified by determination of high content of tin in national geochemical standard samples and the results are in agreement with certified value. The method can be used for measurement directly without dilution of high content of tin in geochemical samples, and it greatly improved the detection upper limit for the determination of tin with solid emission spectroscopy and has certain practical value.
Key words:Solid emission spectrometry;Geochemical samples;High content of tin
姚建贞1,郝志红1*,唐瑞玲1,李晓静2,李文阁1,张 勤1 . 固体发射光谱法测定地球化学样品中的高含量锡[J]. 光谱学与光谱分析, 2013, 33(11): 3124-3127.
YAO Jian-zhen1, HAO Zhi-hong1*, TANG Rui-ling1, LI Xiao-jing2, LI Wen-ge1, ZHANG Qin1 . Determination of High Content of Tin in Geochemical Samples by Solid Emission Spectrometry. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(11): 3124-3127.
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