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Outline
The total amount of rare earth in mixed rare earth chloride solution [RECl3(L)] is determined by EDTA titration and the effects of glass metering instruments, analytical reagents, sample homogeneity and non-rare earth metal ions on the measurement results are studied. The results show that: Glass metering instruments have the greater impact on the measurement results, especially the error accumulation effect of metering instruments, and errors of total rare earth correction (within the maximum allowable calibration error) can reach 3.66 g/L; the effect of aluminum and iron ions on the measurement results can be eliminated by adding masking agents; the zinc ion concentration is small and the effect on the results can be negligible. In the daily analysis process, pay attention to analyze the quality and correct use of reagents, ensuring the homogeneity of samples, reducing the analysis error, and improve the accuracy of analysis results.
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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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