顶空固相微萃取-气相色谱-质谱联用分析纺织品中挥发性有机物

建立了顶空固相微萃取（HSSPME）-气相色谱（GC）-质谱（MS）联用测定纺织品中甲苯、4-乙烯基环己烯、苯乙烯、萘和1-苯基环己烯5种挥发性有机物（VOCs）的分析方法。选择聚二甲基硅氧烷（PDMS）作为萃取涂层，优化了SPME的萃取条件，包括平衡时间、萃取时间、萃取温度、顶空体积、离子强度、搅拌速度、解吸温度和时间以及GC—MS仪器条件。对于甲苯、4-乙烯基环己烯、苯乙烯、萘和1-苯基环己烯方法线性范围分别为0．087～870、3．32～3320、2．28～2280、0．015～150和0．050～50．0ng／g；检出限分别为0．005、0．042、0．670、0．008和0．011ng／g。实际样品加标回收率在80．1％～122％之间，RSD在0．8％～8．6％之间。方法符合纺织品中痕量VOCs的快速分析要求。

Determination of volatile organic compounds in textiles by GC-MS using headspace solid phase microextraction

A method for the determination of volatile organic compounds(VOCs) in textiles was developed by GC-MS using headspace solid phase microextraction(HSSPME).The optimum conditions for the HSSPME of VOCs,such as the equilibrium time,extraction time,extraction temperature,headspace volume,NaCl concentration and stirring rate were studied in detail.The linear range was from 0.087 to 870 ng/g for toluene,from 3.32 to 3320 ng/g for 4-vinylcyclohexene-1,from 2.28 to 2280 ng/g for styrene,from 0.015 to 150 ng/g for naphthalene and from 0.050 to 50.0 ng/g for 1-phenylcyclohexene.The detection limit was 0.005 ng/g for toluene,0.042 ng/g for 4-vinylcyclohexene-1,0.670 ng/g for styrene,0.008 ng/g for naphthalene and 0.011 ng/g for 1-phenylclohexene,respectively.The method was used for the determination of trace VOCs in spiked textile.The average recovery was from 80.1% to 122% and the RSD was from 0.8% to 8.6%.The method is simple,efficient,accurate.It is very suitable for the rapid determination of VOCs in textile samples.