Determination of Trace Au in Mine Sample by Inductively Coupled Plasma Atomic Emission Spectroscopy
JI Chun-hong1, LI Jian-qiang1*, HUANG Wen-jie1, BAO Rui2, GUO Ru1, HU Jun-jie1
1. School of Applied Science, University of Science and Technology Beijing，Beijing 100083, China 2. Innova Superconductor Technology Co. Ltd., Beijing 100176, China
Abstract：A method for the determination of trace gold by inductively coupled plasma atomic emission spectrometry (ICP-AES) in mine sample was proposed. The instrument parameters were optimized and the media of solution and interferences were studied systemically. The results showed that in less than 10%(φ) aqua regia medium, the acids had no influences on the determination, and after removing common cations in mineral samples by using 10% hydrochloric acid(φ), the residual matrix elements had no effect on the determination of Au with ICP-AES. The silicon in samples had serious spectral interference to Au 208.2 nm, and the spectral interference was corrected with interference coefficient using the 251.6 nm silicon line. With 10% HCl to remove the matrix and interference correction coefficient to eliminate the interference of silicon, trace gold in high-sulfur tailings samples was determined, the result was identical with the reference values by the method of enrichment with activated carbon-atomic absorption spectrometry. Under the experimental conditions, the detection limit for gold in mine sample was 0.10 g·t-1.
季春红1，李建强1*，黄文杰1，包 蕊2，郭 茹1，胡俊杰1 . 电感耦合等离子体原子发射光谱法(ICP-AES)测定矿样中痕量金 [J]. 光谱学与光谱分析, 2010, 30(05): 1396-1399.
JI Chun-hong1, LI Jian-qiang1*, HUANG Wen-jie1, BAO Rui2, GUO Ru1, HU Jun-jie1 . Determination of Trace Au in Mine Sample by Inductively Coupled Plasma Atomic Emission Spectroscopy . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(05): 1396-1399.
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