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In order to accurately and efficiently determine the purityof ethyl acetate refined products, the separation was carried outaccording to the programmed heating method based on the analysiscondition of gas chromatograph. The initial temperature was set at ${80}^{\circ }\mathrm{C}$ , and after $4\mathrm{\;{min}}$ , the heating ratestarted at ${20}^{\circ }\mathrm{C}/\mathrm{{min}}$ ,and the termination temperature was ${140}^{\circ }\mathrm{C}$ . The analysisshowed that the separation degree of each peak was greater than 2.0, andthe peak shape was symmetrical, sharp and the baseline was stable.Effective separation is possible. After the quantitative analysis ofarea normalization method, correction factor method and internalstandard curve method, the correction factor method has thecharacteristics of high accuracy, strong stability and economy, and itis more suitable for the determination of ethyl acetate purity than thecorrection factor 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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