微波辅助固相顶空-气相色谱法测定人造板材中的苯系物

Determination of benzene,toluene and xylene in artificial boards by microwave-assisted solid phase headspace-gas chromatography

采用微波辅助固相顶空-气相色谱法测定了人造板材中的苯系物含量,考察了不同微波功率作用下3种苯系物随时间的变化趋势,在优化的条件下测定了3种苯系物的含量.该法检出限为3.6—13.4 ng.g-1板材,RSD为2.7%—9.8%,回收率为86.9%—109.4%,方法简便、快速,适合固体板材中苯系物的直接快速分析.

The contents of benzene,toluene and xylene in artificial boards were determined by microwave-assisted solid phase headspace-gas chromatography.The effects of microwave power on peak areas of the three compounds with increasing irradiation time were discussed.The detection limits of the three compounds were 3.6,9.1 and 13.4 ng · g-1 respectively.Recoveries for the three compounds were in the range of 86.9%—109.4%.The microwave-assisted solid phase headspace-gas chromatography is a simple,rapid method,and suitable for the direct determination of benzene,toluene and xylene in artificial boards,without any pretreatment.