大气中氰化氢的测定方法,过去多采用吡啶巴比土酸和吡啶盐酸联苯胺比色法,此两法虽然灵敏度很高,但共同存在吡啶有恶臭和联苯胺有毒的缺点。目前国内外开始采用离子选择电极等仪器分析和吡啶-1-苯基3-甲基-5吡唑啉酮比色法,应用仪器测定,虽然具有灵敏度高、操作简易快速的特点,但因受到条件的限制,尚不能被广泛 Atmospheric hydrogen cyanide in the past, the more the use of pyridine and barium picolinic acid pyridine benzidine colorimetric method, although the two methods of high sensitivity, but co-exist pyridine malodor and benzidine toxic shortcomings. At home and abroad began to use ion-selective electrode and other instrumental analysis and pyridine-1-phenyl 3-methyl-5-pyrazolone colorimetric method, the application of instrumental determination, although with high sensitivity, easy and fast operation, but due to Conditions are not yet widely available