提出了一种检测飞机液压油泄漏的方法——荧光法，以美孚磷酸酯液压油为例，实验验证了荧光法检测磷酸酯液压油泄漏的可行性。采用LS-55型荧光分光光度计以及实验室搭建系统对HyJet Ⅴ磷酸酯液压油以及Jet Oil Ⅱ、2197润滑油的荧光特性进行了分析。研究结果表明,可以用不同荧光发射光谱峰值来区分三种油，荧光法检测磷酸酯液压油泄漏是可行的。该技术可实现对飞机液压油泄漏的实时、在线、现场测量。

We proposed a detection method for detecting aircraft hydraulic oil leakage——fluorescence method. Taken Mobil phosphate ester hydraulic oil as an example, the experiments verified the feasibility of the fluorescence method in the detection of phosphate ester hydraulic oil leakage. LS-55 fluorescence spectrophotometer and the laboratory build system were used to analyze the fluorescence characteristics of HyJet Ⅴ phosphate ester hydraulic oil, Jet Oil Ⅱ lubricant and 2197 lubricant. The results show that three kinds of oil can be distinguished by different fluorescence emission spectrum peaks, which indicates that it is feasible to detect phosphate ester hydraulic oil leakage with fluorescence method. The technology is of great significance to achieve the real-time,online and on-site measurement of hydraulic oil leakage.