建立了单波长X射线荧光光谱法测定加氢催化剂中磷含量的方法。将干燥催化剂样品粉末0.200 0 g置于银坩埚中，加入10 mL 0.67 g·mL^-1氢氧化钠溶液，加热微沸20 min，趁热转移至250 mL烧杯中，加入10 mL 50%（体积分数）硫酸溶液调节体系酸度，加热至样品完全溶解，冷却后，定容至250 mL。取上述待测液6 mL，采用Phoebe型单波长X射线荧光磷含量分析仪测定其中的磷含量，测量时间600 s。结果表明，磷的质量分数在0.006%内与其对应的荧光强度呈线性关系，检出限（3s/k）为0.4 μg·g^-1。 按标准加入法进行回收试验，回收率为93.0%~120%，测定值的相对标准偏差（n=7）均小于5.0%。方法所得测定结果与经典的分光光度法的一致。

A method for the determination of phosphorus in hydrogenation catalyst by single wavelength X-ray fluorescence spectrometry was established. The sample powder of dry catalyst (0.200 0 g) was placed into a silver crucible, and 10 mL of 0.67 g·mL^-1 sodium hydroxide solution was added. The above mixture was heated to boil for 20 min, and transfered to a 250 mL beaker while it was hot. Then 10 mL of 50% (φ) sulfuric acid solution was added to adjust the system acidity, and heated until the sample was completely dissolved. The solution was made its volume up to 250 mL after cooling, and 6 mL of the above test solution was taken. The content of phosphorus was determined with a Phoebe single wavelength X-ray fluorescence phosphorus analyzer with measured time of 600 s. The results showed that linear relationship between fluorescence intensity and mass fraction of phosphorus was found within 0.006%, with detection limit (3s/k) of 0.4 μg·g^-1. Test for recovery was made by standard addition method, giving results in the range of 93.0%-120%, with RSDs (n=7) of the determined values less than 5.0%. The results obtained by this method were consistent with those obtained by classical spectrophotometry.