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In order to solve the problem that the standard analysis method of molybdenum concentrate has complicated steps and can only measure one element at a time, an analysis method was developed that has fast analysis speed, simple sample dissolution method and was suitable for the simultaneous determination of multiple elements in molybdenum concentrate. Inductively coupled plasma emission spectrometry (ICP-OES) was used to determine various elements in molybdenum concentrate by matrix separation. The research mainly dissolves molybdenum concentrate in a strong oxidation system of hydrogen peroxide-hydrochloric acid-nitric acid-perchloric acid to remove substances such as carbon and flotation agents from the mineral. Then, effectively eliminated matrix interference by separating molybdenum trioxide precipitation from rhenium in the sample solution. Under the conditions of transmitting power of 1.2 kW, auxiliary gas flow rate of 1.0 L/min, atomizing gas flow rate of 0.7 L/min, and peristaltic pump speed of 12 r/min, the interference of solution acidity, matrix and coexisting elements were studied. The results show that the linear correlation coefficients of the working curve are greater than 0.999, the detection limits are 0.000 3~0.02 μg/mL, and the relative standard deviations are 0.82%~4.96%. The analysis results of GBW(E)070212 and GBW(E)070213 for molybdenum concentrate are basically consistent with those of the standard analysis method.
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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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