顶空气相色谱法测定修正液中挥发性有害物质

Determination of Harmful and Volatile Compounds in Correction Fluid by Headspace-Gas Chromatography

建立了顶空气相色谱法,可同时测定修正液中烃类、卤代烃、苯系物三类共11种挥发性有害物质。方法检出限为0.03 mg/kg-0.23 mg/kg,平均回收率在86.6%-98.3%之间,相对标准偏差<5%。通过对修正液样品的测定,结果表明样品中含有环己烷、甲基环己烷、四氯化碳、甲苯和二甲苯等物质。该方法省去了复杂的样品前处理,准确、可靠,可用于学生用品修正液中卤代烃、苯、甲苯、二甲苯等有机挥发物的测定。

A new method,which can be used to determinate 11 kinds of harmful and volatile compounds including hydrocarbon,halohydrocarbons and bensoid compounds in correction fluid,was established by HeadSpace-Chromatography.The quantization limits,recovery and RSD were 0.03 mg/kg-0.23 mg/kg,86.58%-98.25 and 5%,respectively.The method was simple,accurate,stable and suitable for the determination of volatile compounds such as hydrocarbon,benzene,toluene and dimethylbenzene in correction fluid.