富勒烯烟炱的吸附性及其在大气挥发性有机物分析中的应用

Adsorption Characteristics of Fullerene-extracted Soots and Its Application for Collecting Volatile Organic Compounds in Ambient Air

研究了富勒烯烟炱对挥发性有机物 (VOCs)的吸附作用 . 1 7种 VOCs气体在烟炱上的比保留体积 V2 0g为 1 7.4～ 2 63 4L/g.富勒烯烟炱充填的吸附管对 VOCs气体的吸附 -热脱附回收率在 40 .8%～ 1 1 7%之间 ,大部分为 (1 0 0± 2 0 ) % .结果表明 ,富勒烯烟炱能够用于吸收和富集大气中痕量的

Fullerene-extracted soots which are the by-product of producing fullerenes(C_60/C_70) can adsorb organic vapors efficiently. Breakthrough volumes(maximum sample volumes, V_max)and specific retention volumes(20 ℃)of 17 VOCs(volatile organic compounds)are measured. The recoveries of adsorption/thermal desorption of Fullerene-extracted soots adsorbent tubes ranged from 40.8% to 117%, most of which are (100±20)%. Fullerene-extracted soots is cheap and can be used in environmental analysis for trapping and enriching traces of VOCs in ambient air.