目的建立一种灵敏、稳定、准确、线性范围宽的游泳池水中尿素检测方法。方法将国标法中的二乙酰一肟浓度从0.2%改为2%,定容体积由25mL改为10mL。结果优化后吸光度明显提高,方法线性(r>0.999)比原国标好。结论该法线性范围宽,灵敏度高,回收率高,符合实验的要求。 Objective To establish a sensitive, stable, accurate and linear range of swimming pool water urea detection method. Methods The concentration of diacetyl monoxime in the national standard method was changed from 0.2% to 2%, and the volume of constant volume was changed from 25mL to 10mL. Results After optimization, the absorbance was significantly improved. The method was linear (r> 0.999) better than the original national standard. Conclusion The method has a wide range of linearity, high sensitivity and high recovery rate, which meets the experimental requirements.