近年来,应用检测管测定微量硫化氢和磷化氢的方法已引起了各国分析工作者普遍兴趣。用容量法分析硫化氢和磷化氢,手续繁复,时间长,需数小时才能进行一次,而仪器分析则受条件限制。如采用检测管,成本低,无需电源、热源,方法简便、快速,准确度和精密度也符合微量分析要求。电石及乙炔气中微量硫化氢和磷化氢的检测管测定 In recent years, the application of detection tubes for the determination of trace amounts of hydrogen sulfide and phosphine has drawn widespread interest among analysts in various countries. Hydrogen sulphide and phosphine are analyzed by volumetric method, complicated procedures, long time, take a few hours to conduct once, and instrumental analysis is subject to conditions. Such as the use of test tubes, low cost, no power, heat, the method is simple, fast, accuracy and precision also meet the trace analysis requirements. Determination of trace amounts of hydrogen sulfide and phosphine in calcium carbide and acetylene gas