Abstract：The main component of fluorite was calcium fluoride. The presence of different elements in fluorite had different influences on the quality of its products. The traditional determination methods of components in fluorite included spectrophotometry, titrimetry and atomic absorption spectrometry. However, these methods had some problems such as long analytical process and inability for simultaneous determination of multiple elements. The sample was dissolved with perchloric acid and nitric acid. After perchloric acid smoking, the salts were dissolved with 50%(V/V) hydrochloric acid.The spectral interference among testing elements was avoided by selecting proper analytical lines. The effect of sample dissolution method and calcium matrix on the determination were studied. A determination method of eleven microelements in fluorite including aluminum, boron, barium, iron, magnesium, manganese, titanium, zinc, potassium, sodium and phosphorus by inductively coupled plasma atomic emission spectrometry (ICP-AES) was established. The results showed that the matrix effect could be eliminated by drawing calibration curve with matrix matching method. The linear correlation coefficients of calibration curves of elements were higher than 0.999. The limits of detection of elements were between 0.000 1% and 0.003% (mass fraction), the limits of quantification were 0.000 3%-0.010% (mass fraction). The contents of aluminum, boron, barium, iron, magnesium, manganese, titanium, zinc, potassium, sodium and phosphorus in fluorite sample were determined according to the experimental method. The relative standard deviation (RSD, n=6) of determination results were between 0.43% and 3.4%. The contents of aluminum oxide, iron oxide, magnesium oxide, manganese oxide, titanium oxide, potassium oxide, sodium oxide and phosphorus in certified reference material of fluorite were determined according to the experimental method, and the results were basically consistent with the certified values.
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