【摘要】 借助气相色谱基本原理,测定了全氟二甲基环丁烷大气示踪剂通过Carboxen-569碳分子筛吸附管的分配系数,考察了温度和采样速度对穿透体积和安全采样体积的影响,确定了示踪剂吸附采样的基本参数吸附剂用量为150mg,吸附采样温度≤40℃,采样速度为200mL/min,样品解吸温度为200℃.更多还原

【Abstract】 With the aid of gas chromatograph basic theory, the distribution coefficient of perfluorodimethylcyclobutane (PDCB) atmospheric tracer was tested and determined through carboxen-569 carbon molecular sieve sorption pipe. the influence of temperature and sampling speed on the penetration volume and the safe sampling volume were investigated. the basic sampling parameters were ascertained. The use amount of adsorbent was 150mg, the sorption sampling temperature ≤40℃, the sampling speed was 200mL/min and the sample desorbing temperature was 200℃.更多还原