液相催化调聚合成卤代烃的催化剂研究进展

综述了卤代烷与烯烃调聚合成卤代烃的催化剂体系，包括铜催化剂、铁催化剂、镍催化剂和复合金属催化剂等无载体型催化剂和负载型催化剂。     

污染地块土壤气中挥发性卤代烃的检测技术

本文建立了一种新型的土壤地块调查采样方法：受污染地块土壤气中挥发性卤代烃的采样方法,用气相色谱法进行分析。同时论述了土壤气采样技术的注意事项。结果表明5种卤代烃的检出限在0.09～0.40μg/L范围内,回收率在91%～103%之间,相对标准偏差在3.0%～6.3%之间。土壤气采样技术对于调查大范围挥发性有机物污染具有简单易行、高效的特点;并且土壤气所代表的污染区域比土壤要广     

Effect of Energy of the Ignition Source on the Experimentally Determined Value of the Minimum Inerting Concentration of Halohydrocarbons

Based on the test results obtained in a spherical pressure chamber, the inerting concentration of halohydrocarbons C₂F₄Br₂, CF₃Br, and C₂F₅H was experimentally determined in a stoichiometric methane–air mixture, depending on the ignitionsource energy. A wire burnt by electric current or a pyrotechnical composition was used as an ignition source. The energy of ignition sources was varied within 2 to 420 J. To obtain the real value of the inerting concentration of halohydrocarbons, independent of the ignition source used, the energy of the latter should be higher than 100 J for C₂F₄Br₂ and C₂F₅H and 400 J for CF₃Br. Application of ignition sources with lower energy yields underrated results and is related to the growth of the minimum ignition energy with addition of halohydrocarbons rather than to inerting of the combustible mixture.     

Effect of the Ignition Source on Experimental Values of the Minimum Extinguishing Concentration of Trifluoroidomethane in Methane–Air and Heptane–Air Mixtures

It is found experimentally that the extinguishing concentration of trifluoroidomethane depends on the type of ignition source. It is shown that the minimum extinguishing concentration of trifluoroidomethane is at least 45% for methane–air mixtures and 50% for heptane–air mixtures.     

大口径毛细管同时测定水中12种卤代烃的研究

本文进行了毛细管柱同时测定饮用水中12种卤代烃的研究，实验表明：该方法灵敏度高，精密度和回收率好，直接测定饮用水中卤代烃具有样品前处理简单、测定方便等优点。