Abstract：At present, the determination of fluorine content in copper concentrate usually adopts the national standard methods of GB/T 3884.5-2012 and GB/T 3884.12-2010. Although these two methods have high accuracy, they are both complicated and have high requirements for the operator. 0.50 g of sample was weighted, and 0.6 g of quartz sand, which was burned at 1 100 ℃ for 1 h, was added. At oxygen flow rate of 600 mL/min, the fluorine content was determined by automatic fluorine analyzer with dynamic slope. Thus, a method for determination of fluorine in copper concentrate was established by automatic fluorine analyzer. The relative standard deviations (RSD,n=11) of the determination results for fluorine in copper concentrate samples were all less than 5% when the fluorine contents were in the range of 0.014%-0.454% (mass fraction). The proposed methods were applied in determination of reference material or certified reference material of copper concentrate, and the determination results were consistent with the certified value or standard value. The fluorine contents in copper concentrate samples were determined according to the proposed method and the national standard methods, respectively. Moreover, the F-test and t-test were conducted. The results showed that there was no significant difference between the proposed method and the national standard methods.
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