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To ensure the purity during the aluminum alloy alloying process, it is necessary to control the impurity content in primary alloy ingots. The contents of silicon, iron, copper, aluminum, manganese, and nickel impurities in primary magnesium ingots are determined using Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) and X-Ray Fluorescence spectrometry (XRF). For ICP-AES, samples are dissolved with hydrogen peroxide-hydrochloric acid, and the spectral lines are optimized along with the matrix-matching method, achieving a detection limit of 0.000 01%~0.000 27%, a spike recovery rate of 92%~102%, and a repeatability RSD of <2.3%. For XRF, the optimal analysis conditions are determined, with a detection range of 0.000 1%~0.100 0% and a repeatability RSD of ≤3.1%. The results indicate that both methods exhibit good accuracy and repeatability, with ICP-AES offering higher sensitivity, while XRF is more suitable for rapid and non-destructive testing.
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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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