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Acid concentration and uranium concentration in raffinate phase generally need to be measured separately, which is cumbersome and requires a large amount of work. A new method for continuous measurement of acid concentration and uranium concentration in raffinate phase was developed. A strong base was used as titration agent, the color change of the indicator was selected to indicate the titration endpoint. After completing the acid concentration detection, the sulfuric acid and arsenazo III solutions with a certain amount and concentration were added to the above solution to make the solution color, and the absorbance of the color solution was measured at 650 nm. The results show that the precision of measuring acid concentration and uranium concentration is 1.53% and 1.13% respectively, the indication error for measuring acid concentration and uranium concentration is 1.69% and 1.52% respectively. For the measurement of actual water samples, the measurement data of this method is basically consistent with that of the laboratory current methods, the recovery rate of acid concentration measurement is between 97.0% and 102.5%, and the recovery rate of uranium concentration measurement is between 97.0% and 102.0%. The method is suitable for continuous monitoring of acid concentration and uranium concentration in raffinate phase and has accurate and fast characteristics.
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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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