目的应用全自动化学分析仪测定水中消毒副产物氯化氰。方法水中氯化氰与异烟酸-巴比妥酸试剂反应生成蓝紫色的化合物,用全自动化学分析仪测定。结果氯化氰在(0.01~1.00)mg/L范围内线性良好(r≥0.995),相对标准偏差为1.96%~5.85%,加标回收率为86.00%~100.00%,检出限为0.01mg/L。结论该方法时间短,不同样品间检测环境条件可以保持一致,可以自动绘制标准曲线,节约劳动力,可以作为测定水中消毒副产物氯化氰的一种快速检测方法。 Objective To determine the cyanide cyanogen byproduct in water disinfection by automatic chemical analyzer. Methods Cyanide chloride and isonicotinic acid - barbituric acid reagents react to form a blue-purple compound, measured by a fully automated chemical analyzer. Results Cyanide was linear (r ≥ 0.955) in the range of (0.01-1.00) mg / L with the relative standard deviations of 1.96% -5.85%, the recoveries of standard addition ranged from 86.00% to 100.00%, and the limits of detection were 0.01 mg / L. Conclusion The method is short in time, and the environmental conditions of different samples can be kept consistent. The standard curve can be drawn automatically and the labor force can be saved. It can be used as a rapid detection method of cyanogen cyanide, a by-product of water disinfection.