二阶导数同步荧光光谱测定卷烟主流烟气中的苯并(a)芘

研究了卷烟主流烟气粒相物中苯并(a)芘(BaP)的同步荧光及其一阶和二阶导数光谱, 发现二阶导数同步光谱可明显减少背景及BaP同系物对BaP测定的干扰。据此建立了一种固相萃取-二阶导数同步荧光光谱法测定卷烟主流烟气粒相物中BaP的新方法。方法检测限为0.2 ng·mL-1，平均回收率为80.2%～86.2%，相对标准偏差为2.64%～3.02%。

Determination of Benzo(a)pyrene in Cigarette Mainstream Smoke by Second-Order-Derivative Synchronous Fluorescence

The synchronous fluorescence, first-order and second-order-derivative synchronous fluorescence spectra of BaP in cigarette mainstream smoke were studied. It was indicated that the second-order-derivative synchronous fluorescence spectrum could decrease the disturbances of BaP homologous compounds and background of sample. Hereby the present paper introduces a new method to determine BaP in cigarette mainstream smoke by solid-phase-extraction second-order-derivative synchronous fluorescence. The detection limit is 0.2 ng x mL(-1), the average recoveries of BaP are 80.2%-86.2%, and the RSD is 2.64%-3.02%.