一种新型热重分析仪尾气缓冲及净化装置的开发与应用  

Development and application of a novel combined device for exhaust gas buffering and purification of thermogravimetric analyzer

作　　者：韩海云 象丽丽 孙玲 郭家铖 李小宇 陈东英 Han Haiyun;Xiang Lili;Sun Ling;Guo Jiacheng;Li Xiaoyu;Chen Dongying(Shanghai Institute of Materia Medica,Chinese Academy of Sciences,Shanghai 201203,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海药物研究所,上海201203 [2]中国科学院大学,北京100049

出　　处：《分析仪器》2025年第1期16-19,共4页Analytical Instrumentation

基　　金：中国科学院仪器设备功能开发项目资助。

摘　　要：为改善热重分析过程中室内外气流扰动影响,同时降低样品热挥发或热分解产生的挥发性有机物排放,本研究设计了一种集尾气缓冲与净化于一体的新型装置。在基线采集过程中通过开关实验室门产生扰动来考察尾气缓冲效果,采用气相色谱质谱联用仪检测净化装置安装前后尾气中的有机物来考察净化效率。结果显示,应用本装置后开关门产生的扰动不会引起基线异常波动,有效提升热重分析仪抗气流干扰能力;同时极大地减少了尾气中有毒有害化合物的排放,从而降低了对实验室检测人员以及大气环境的暴露风险。In order to mitigate the effect of airflow disturbances and reduce the emission of volatile organic compounds which generated by thermal volatilization or decomposition of samples in the process of thermogravimetric analysis,a novel device that combined exhaust gas buffer and purification was designed in this study.The efficiency of the exhaust gas buffer device was evaluated by introducing disturbances through opening and closing of the laboratory door during the baseline collection process,while the efficiency of exhaust gas purification device was investigated by comparing the residual organic compounds before and after the installation of the purification device detected by gas chromatography-mass spectrometry.It was indicated that the combined devices could not only avoid airflow disturbances caused by opening and closing door,which would otherwise lead to abnormal fluctuations in the baseline,but also significantly reduced the emission of toxic organic compounds from the exhaust gas,thereby minimizing the exposure risks to the laboratory analysts and atmosphere environment,as well.

关 键 词：热重分析仪 尾气缓冲 尾气净化 气流扰动 挥发性有机物 基线 

分 类 号：X70[环境科学与工程—环境工程]