采用吹扫捕集气相色谱法测定卷烟包装卡纸中苯系物残留,并对测试条件进行了优化.所测定的苯、甲苯、乙苯、对二甲苯、间二甲苯、邻二甲苯、苯乙烯等在4.3-900 μg·L-1浓度范围具有良好的线性,相关系数均达到0.999 9,检出限为1.0-11.6 ng·g-1,回收率为91.5%-1092%,重复测定5次的相对标准偏差为1.73%-3.24%.

The purge-trapping method was applied to the sampling in GC determination of residual benzene homologues in cigarette packing paperboard.Linear relationships between peak area and concentration of benzene homologue were obtained in the range of 4.3-900 μg·L-1 for all of the 6 homologues tested (i.e.benzene,toluene,ethyl benzene,m-xylene,o-xylene,m-xylene and styrene) with their correlation coefficients achieved to 0.999 9.Detection limits were ranged between 1.0 to 11.6 ng·g-1.Recoveries obtained were in the range of 91.5%-109.2%.RSD′s (n=5) found were in the range of 1.73%-3.24% for the 6 homologues.