Method for detecting content of P204 in organic extraction agent

The invention discloses a method for detecting the content of P204 in an organic extractant, which comprises the following steps: mixing hydrochloric acid, a mixed solution containing sulfuric acid and oxalic acid, a sodium hydroxide solution, a sulfuric acid solution, water and the organic extractant in sequence, standing for layering, removing a water phase to obtain a test sample, and finally mixing the test sample with an ethanol solution to obtain the content of P204 in the organic extractant. Bromothymol blue or bromocresol green is taken as an indicator, a sodium hydroxide standard solution is adopted for titration to the end point, and the content of P204 is calculated according to the dosage of the sodium hydroxide standard solution. Therefore, the method has the advantages that the influence of impurity elements is effectively reduced, the operation is simple, the accuracy is high, and the application range is wide. 本发明公开了一种检测有机萃取剂中P204含量的方法，该方法通过依次使用盐酸、含有硫酸和草酸的混合溶液、氢氧化钠溶液、硫酸溶液、水与有机萃取剂混合后静置分层，排除水相得到