Characteristics of Organophosphate Ester Formation during Smoking

H. Shimazu
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Abstract

This study examines the occurrence of organophosphate esters (OPEs) in cigarettes and sidestream cigarette smoke and to see the OPE formation characteristics during smoking. All seven OPEs in both gas and particulate phases were measured in sidestream cigarette smoke for four brands of cigarettes. Tributyl phosphate (TBP), tris(2-butoxyethyl) phosphate (TBEP), tris(2-chloroethyl) phosphate (TCEP), and triphenyl phosphate (TPP) were found frequently. Median total OPE increases in the air samples during smoking were 56.2 ng per cigarette for gas-phase OPEs and 2360 ng per cigarette for particulate-phase OPEs. TBP and TCEP could be absorbed to particles in air more readily than alkans as seen from the correlation line between gas–particle partition coefficients (Kp) and the subcooled liquid vapor pressures (PLº) for alkans. Furthermore, TBP was determined in the cigarettes. Median total OPE decreases in the cigarette samples during smoking were 1200 ng per cigarette. The combustion reaction increased TBP and TBEP levels in cigarettes, and particulate-phase TBEP in air appeared to influence the production of TBP, TCEP, and TPP. TBP and TBEP in cigarettes likely affect the production of TBP, TBEP, TCEP, and TPP in air during smoking.
吸烟过程中有机磷酸酯形成的特征
本研究考察了有机磷酸酯(OPEs)在卷烟和侧流卷烟烟雾中的发生情况,并观察了OPEs在吸烟过程中的形成特征。在四种香烟的侧流烟雾中测量了气体和颗粒相的所有七种OPEs。磷酸三丁酯(TBP)、磷酸三(2-丁氧乙基)磷酸(TBEP)、磷酸三(2-氯乙基)磷酸(TCEP)和磷酸三苯基(TPP)是常见的化合物。在吸烟过程中,空气样本中总OPE的中位数增加是:气相OPEs每支烟56.2 ng,颗粒相OPEs每支烟2360 ng。从气粒分配系数Kp与气液过冷蒸汽压PLº的相关曲线可以看出,TBP和TCEP比烷烃更容易被空气中的颗粒吸收。此外,还测定了香烟中的TBP。吸烟期间,香烟样本中总OPE的中位数下降为每支1200纳克。燃烧反应增加了卷烟中TBP和TBEP的含量,空气中颗粒相TBEP似乎影响了TBP、TCEP和TPP的产生。香烟中的TBP和TBEP可能影响吸烟过程中空气中TBP、TBEP、TCEP和TPP的产生。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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