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The samples are prepared with fused bead method, contents of calcium fluoride, silicon dioxide, phosphorus and sulfur in fluorite are determined with wavelength dispersion X-ray fluorescence spectrometry as well as effects of such factors as type of flux, dilution ratio, weighing sample, melting temperature and melting time on determination results are analyzed so that optimal experimental conditions are determined. Meanwhile, the working curves of each element are drawn using standard samples and self-made control samples as well as correlation coefficients all reach over 0.999. The precision experiment showed that the relative standard deviation (RSD, n=10) of determination results for contents of calcium fluoride, silicon dioxide, phosphorus and sulfur in fluorite was 0.23%~4.80%, the accuracy experiment showed that the difference values of measured values, standard values and chemical analysis values for contents of calcium fluoride, silicon dioxide, phosphorus and sulfur in standard sample of fluorite and control sample of wet chemical analysis were within the range of allowable deviation for the methods of GB/T 5195.5—2017, GB/T 5195.6—2006, GB/T 5195.1—2017 and GB/T 5195.8—2006. The method is with shorter analysis process, higher sensitivity and certain promotion and application value compared with wet chemical analysis.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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