Full
Outline
To establish quantitative proton nuclear magnetic resonance (qHNMR) method to determine the contents of methyl benzenesulfonate, propyl benzenesulfonate, isopropyl benzenesulfonate, methyl p-toluenesulfonate, and isopropyl p-toluenesulfonate.
Proton nuclear magnetic resonance spectroscopy (qHNMR) spectra were collected by BRUKEANANCE NEO 600 MHz NMR spectrometer. The parameters were set up as follows: 30° pulse sequences, the relaxation delay time was 10 s, the number for scanning was 16, and the experiment temperature was controlled at 25 ℃, dimethyl terephthalate were used as internal standard, respectively. The quantitative study of benzenesulfonate ester compounds was carried out in CDCl3-d as solvents.
Using dimethyl terephthalate as internal standard, the contents of five benzenesulfonate ester compounds determined by qHNMR method were basically consistent with the results obtained by mass balance method.
The qHNMR method established in this study is simple, rapid, and accurate, and can be used for the determination of benzenesulfonate ester compounds, providing strong evidence data for the accurate assignment of the reference material.
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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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