Abstract：An AAS method for the determination of manganese in fluorspar was established for the inspection of export product. The fluorspar sample was treated with HF, then fumed with HClO4. After cooling, the residue was dissolved by adding HCl and boric acid with gentle heating. The series of standards for calibration were prepared by adding the same amount of Ca for matrix matching. The linear range of the determination of manganese is 0.09-2.5μg·mL-1. The determination limit of the method for Mn in fluorspar was 0.001 0%. Analytical results of real samples with various levels of content by the proposed method were in good agreement with those by the ISO method of spectrophotometry. The method features good precision, easy operation, and convenience for application.
[1] WAN Bingzhong(万秉忠). Collection of Inspection of Import and Export Mineral(进出口矿产品检验集萃). Beijing: Standard Press of China(北京：中国标准出版社)，2001. 226. [2] National Standard Methods of P.R.China(中华人民共和国国家标准). GB 5195.1-9 1985. Methods for Chemical Analysis of Fluorspar(氟石化学分析方法). Beijing: Standard Press of China(北京：中国标准出版社)，1985. [3] International Organization for Standardization. ISO 9062: 1992(E). Acid-grade and Ceramic-grade Fluorspar-Determination of Manganese Content-Periodate Spectrometric Method. Switzerland: Case Postale 56·CH-1211 Geneve 20·Switzerland, 1992. [4] ZHANG Ming-ying，CHEN Wen-jun(张明英，陈文君). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，1994，14(5)：85. [5] ZHANG Song-lin，WANG Hong-xing，LI Bao-hong(张松林，王洪星，李宝红). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，1996，16(6)：99. [6] ZHU Zhi-guo，DONG Shun-fu，LIU Wei-ming，XI Ke-sheng，WANG Gui-xian，HAN Li-qin(朱志国，董顺福，刘伟明，奚克生，王贵贤，韩丽琴). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，1997，17(5)：108.
