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本文介绍了一种用于制备标准PPM级气体的新发生方法。本法可发生多种气体,如二氧化硫、氮氧化物(NO+NO_2)、硫化氢、氰化氢和氨。装置简单,操作简便。气体发生率取决于发气溶液的pH值,浓度及温度。发气溶液由特定溶质和缓冲液配制。本法发生的气体的精确度和准确度与渗透管法的相当。发生气体的浓度变化低于3％。本法发生的气体可用于测量仪器的校准、生物及医学试验以及环境空气中化学反应的研究。
This article describes a new generation method for preparing standard PPM grade gases. The law can occur a variety of gases, such as sulfur dioxide, nitrogen oxides (NO + NO_2), hydrogen sulfide, hydrogen cyanide and ammonia. The device is simple and easy to operate. The incidence of gas depends on the pH, concentration and temperature of the gas-generating solution. Gassing solutions are formulated with specific solutes and buffers. The accuracy and accuracy of the gas produced in this method is comparable to that of the permeate tube method. The gas concentration changes less than 3%. The gas generated in this method can be used for the calibration of measuring instruments, biological and medical tests and the study of chemical reactions in ambient air.