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中国预防医学中心卫生研究所和北京分析仪器厂于1983年底在北京召开了大气地面监测站和渗透配气用的二氧化硫、二氧化氮、硫化氢三种渗透管及分析方法科研成果鉴定会.二十多个单位的四十多位代表参加了会议.SO_2、NO_2、H_2S是环境监测中的主要参数.这些气体的化学性质十分活泼,难以用静态法配制和贮存低浓度(ppm-ppb)的标准混合气.目前国内外均采用
China Preventive Medicine Center Institute of Health and Beijing Analytical Instrument Factory convened an atmospheric surface monitoring station and three permeation tubes for permeation and distribution of sulfur dioxide, nitrogen dioxide and hydrogen sulfide and their identification methods at the end of 1983. More than 40 representatives from more than a dozen units participated in the conference.SSO_2, NO_2 and H_2S are the main parameters in environmental monitoring.The chemistry of these gases is very lively and it is difficult to formulate and store the low concentration (ppm-ppb) Standard mixture. Currently used both at home and abroad