Determination of 14 polycyclic aromatic hydrocarbons in mainstream smoke from U.S. brand and non-U.S. brand cigarettes

Tobacco smoke contains thousands of chemical compounds, including many carcinogenic polycyclic aromatic hydrocarbons (PAHs). To determine the concentration ranges of PAHs in tobacco smoke and to understand what factors alter their levels, we quantitatively measured 14 PAHs in mainstream smoke from a transnational U.S. brand (Marlboro) and from locally popular brand cigarettes from 14 countries. We used standardized machine smoking conditions (35-mL puff volume, 60-s puff interval, and 2-s puff duration), extraction of total particulate matter from the Cambridge filters, and gas chromatography/mass spectrometry detection. Deliveries of total PAHs in mainstream smoke of local brands were statistically significantly higher (p < 0.01) than Marlboros in seven countries. In four countries, Marlboro cigarettes had mainstream smoke total PAH levels that were statistically significantly higher (p < 0.01) than local brands. In the remaining three countries, the differences in PAH levels were not statistically significant. Under standard machine smoking conditions, PAH levels were negatively correlated with cigarette filter ventilation levels. We found that several local brands containing primarily flue-cured tobacco filler had relatively high mainstream smoke PAH deliveries, in agreement with findings by previous researchers that flue-cured tobacco typically delivers more PAHs than other tobacco types. We also observed that PAHs were inversely correlated with total carcinogenic tobacco-specific nitrosamines and nitrate content, but these correlations were not statistically significant at the 95% confidence interval. The findings suggest that tobacco blend and nitrate levels may influence PAH deliveries, but other factors may confound this relation.     

Determination of carcinogenic tobacco-specific nitrosamines in mainstream smoke from U.S.-brand and non-U.S.-brand cigarettes from 14 countries.

Tobacco-specific nitrosamines (TSNAs) comprise one of the major classes of carcinogenic compounds in mainstream cigarette smoke. As part of collaborative efforts between the World Health Organization and the U.S. Centers for Disease Control and Prevention (CDC) to reduce tobacco use and resulting disease, the CDC examined carcinogenic TSNA levels from cigarettes obtained from selected countries around the world. Using a modern, high-throughput liquid chromatography/mass spectrometry/mass spectrometry method under stringent quality control protocols, we determined the carcinogenic TSNA levels in mainstream smoke from a globally marketed brand, Marlboro, and from local top-selling cigarette brands from 14 countries. The levels of carcinogenic TSNAs in mainstream smoke collected using a 35-ml puff volume, 60-s puff interval, and 2-s puff duration correlated well (R=0.79, p<.0001) with previously reported levels in the corresponding tobacco filler. Marlboro cigarettes purchased in 10 countries had significantly higher carcinogenic TSNA levels in mainstream smoke than did local-brand cigarettes from the same country. In only one country, Brazil, were the carcinogenic TSNA levels in mainstream smoke from Marlboro cigarettes significantly lower than in the locally popular brand. However, carcinogenic TSNA levels in mainstream smoke from Brazilian Marlboro cigarettes were usually lower than those in mainstream smoke from the Marlboros purchased in the other 13 countries, suggesting a reason for the difference. The wide range of mainstream smoke carcinogenic TSNA levels measured in the present study (8.7-312 ng/cigarette) suggest that manufacturers can lower the carcinogenic TSNA levels and that, for similar filter ventilation, carcinogenic TSNA levels in the tobacco filler of a cigarette are a useful indicator of the corresponding levels in mainstream smoke.     

Tobacco flakes on cigarette filters grow bacteria: a potential health risk to the smoker?

Bacterial growth from a single flake of tobacco was documented for cigarettes that had been purchased recently from local vendors and from cigarettes that had been stored for more than six years in a warehouse. In a novel tobacco flake assay, a pack of cigarettes was opened within the sterile environment of a laminar flow hood. A single flake of tobacco was collected randomly and aseptically from the middle of the cigarette column and placed onto the surface of a blood agar plate. The test cigarettes included eight different popular US brands, and these were from three different tobacco companies. After 24 hours of incubation at 37 degrees C, the plates showed bacterial growth for tobacco from all brands of cigarettes. Further, more than 90% of the individual tobacco flakes of a given brand grew bacteria. Likewise, bacteria grew from microparticulate tobacco that had been sieved from cigarettes. Tobacco flakes were observed lying loosely on the cut surface of the filter of cigarettes in newly opened packs, and bacteria grew from cigarette filters that had been touched to the surface of a blood agar plate. In conclusion, the results of these studies predict that diverse microbes and microbial toxins are carried by tobacco microparticulates that are released from the cigarette during smoking, and carried into mainstream smoke that is sucked deep into the lung.     

卷烟及烟气中薄荷醇的毛细管气相色谱分析

建立了一种以无水乙醇为提取剂,茴香脑为内标,采用毛细管气相色谱定量测定卷烟烟丝和烟气中薄荷醇的方法,并采用该法测定了6种薄荷型卷烟嘴棒、烟丝、烟气粒相物和烟蒂中的薄荷醇含量。结果表明:①该法检测限为3.54~7.96ng/支,回收率在98.8%~101.8%之间,RSD<4%;②该法的测定结果与比色法没有明显差异;③剑桥滤片可以完全截留主流烟气中的薄荷醇;④用进入主流烟气中的薄荷醇量表征薄荷型卷烟的凉度大小,能更准确地反映薄荷型卷烟的感官特征。     

国内外主要品牌卷烟主流烟气中烟草特有N-亚硝胺的对比分析

本文采用气相色谱-热能分析仪(GC-TEA)对卷烟主流烟气中主要4种烟草特有N-亚硝胺(TSNAs)进行了分析;优化了前处理过程及仪器分析条件;建立了使用经抗坏血酸处理的玻璃纤维滤片收集卷烟主流烟气,用二氯甲烷萃取卷烟主流烟气中的TSNAs,萃取液经碱性氧化铝层析柱纯化,TSNAs通过GC-TEA定量检测的分析方法;并对国内外较有代表性的98种卷烟样品中的TSNAs进行了系统的分析测定。结果表明,混合型卷烟主流烟气中TSNAs的含量显著高于烤烟型卷烟;国外混合型卷烟中NNK的含量高于国内混合型卷烟。这些研究结果为制定我国卷烟烟气中TSNAs含量限量标准、建立技术壁垒提供了可靠的技术基础。      

Effect of charcoal-containing cigarette filters on gas phase volatile organic compounds in mainstream cigarette smoke

Of the chemicals identified to date in mainstream cigarette smoke with known toxicological properties, the volatile organic compounds (VOCs) are considered the most hazardous group owing to their high abundance and toxicity. In this research we evaluate a recently introduced line of cigarettes that contain charcoal in their filters. The amount of charcoal in these filters ranged from 45 mg to 180 mg and were either dispersed among the filter material or contained in a small cavity in the filter segment. Charcoal has long been used for removing VOCs from both water and air. Our findings indicate that these cigarettes reduce machine generated mainstream smoke deliveries of a wide range of VOCs compared to a similar, non-charcoal filtered, cigarette. However, this reduction is dependent not only on the amount of charcoal present but also on the volume of smoke being drawn through the filter. While a brand with 45 mg charcoal reduces VOC delivery under ISO smoking conditions, charcoal saturation and breakthrough occur under more intense smoking conditions. Breakthrough is minimised for brands with the most charcoal. Overall, the brands with the most charcoal are effective at reducing VOC deliveries under even intense smoking conditions.     

Environmental tobacco smoke as a source of polycyclic aromatic hydrocarbons in settled household dust

Environmental tobacco smoke is a major contributor to indoor air pollution. Dust and surfaces may remain contaminated long after active smoking has ceased (called 'thirdhand' smoke). Polycyclic aromatic hydrocarbons (PAHs) are known carcinogenic components of tobacco smoke found in settled house dust (SHD). We investigated whether tobacco smoke is a source of PAHs in SHD. House dust was collected from 132 homes in urban areas of Southern California. Total PAHs were significantly higher in smoker homes than nonsmoker homes (by concentration: 990 ng/g vs 756 ng/g, p = 0.025; by loading: 1650 ng/m(2) vs 796 ng/m(2), p = 0.012). We also found significant linear correlations between nicotine and total PAH levels in SHD (concentration, R(2) = 0.105; loading, R(2) = 0.385). Dust collected per square meter (g/m(2)) was significantly greater in smoker homes and might dilute PAH concentration in SHD inconsistently. Therefore, dust PAH loading (ng PAH/m(2)) is a better indicator of PAH content in SHD. House dust PAH loadings in the bedroom and living room in the same home were significantly correlated (R(2) = 0.468, p < 0.001) suggesting PAHs are distributed by tobacco smoke throughout a home. In conclusion, tobacco smoke is a source of PAHs in SHD, and tobacco smoke generated PAHs are a component of thirdhand smoke.     

Dis-SPE-UPLC-MS/MS测定卷烟主流烟气中4种TSNAs

烟草特有N-亚硝胺（TSNAs）是卷烟烟气中重要的致癌成分,为准确测定卷烟主流烟气中的TSNAs释放量,建立了UPLC-MS/MS同时测定卷烟主流烟气中4种TSNAs的检测方法。采用剑桥滤片捕集卷烟主流烟气,经醋酸铵水溶液提取,N-丙基乙二胺（PSA）净化后UPLC-MS/MS测定。结果显示,TSNAs的工作曲线在1~110 ng/mL之间线性关系良好（R²>0.99）,检出限（LOD,以S/N=3计）0.008~0.016 ng/mL;回收率82.5%~94.8%,精密度4.9%~9.8%。该方法与标准方法进行比对效果良好,相关系数的范围为0.9991~0.9995。该方法准确可靠、选择性好,适合于烤烟型卷烟主流烟气中TSNAs释放量的检测。     

Automated determination of seven phenolic compounds in mainstream tobacco smoke

Exposure to hydroxyl-substituted arenes, commonly referred to as phenols or phenolic compounds, can have serious health consequences. Select phenols present in tobacco smoke are cardiovascular toxins, act as tumor co-promoters and show genotoxic activity. To examine the mainstream smoke levels of these compounds, we developed and applied a method for quantitative analysis of seven phenols (phenol, o-cresol, m-cresol, p-cresol, catechol, resorcinol, and hydroquinone) in mainstream smoke. Total mainstream smoke particulate matter was collected on a Cambridge filter pad and spiked with an isotopically labeled internal standard solution. This pad underwent an automated phenol derivatization procedure to increase analyte volatility and enhance detection. Following the derivatization step, phenols from the particulate matter were sampled using solid-phase microextraction with subsequent gas chromatography/mass spectrometric detection. Sensitivity, selectivity, accuracy, and reproducibility were more than adequate for routine detection of phenols in mainstream smoke. Detection limits ranged from 0.04-0.57 microg, with a quantification range of 0.1-710 microg. Higher sensitivity and sample throughput were achieved compared with previously described methods. Mainstream smoke from 28 brands of domestic commercial cigarettes was evaluated to assess typical levels, and reference cigarettes containing single tobacco blends were examined to ascertain the phenolic profile from different types of tobaccos. As expected under machine smoking conditions using the Federal Trade Commission parameters, full-flavored cigarettes deliver more phenols than the light varieties, followed by the ultra light varieties. Differences were seen in relative levels of phenolic compounds in the mainstream smoke from unfiltered cigarettes made with a single type of tobacco.     

卷烟主流烟气酸香特征成分组群的分布特征及感官贡献

为阐明卷烟主流烟气中具有酸香特征且可用于卷烟调香的有机酸成分及其分布特征和感官贡献,以《The chemical components of tobacco and tobacco smoke》中所列出的烟草和烟气成分为数据来源,从烟气中是否存在、香气贡献可能性和烟草添加剂使用安全性等方面对其中的有机酸成分进行了系统筛查,对筛查出的有机酸进行香气特征评价,明确了21种卷烟主流烟气中具有酸香特征且可能作为烟用香料的有机酸成分;采用N,O-双(三甲基硅基)三氟乙酰胺衍生化法和GC-MS法测定了21种酸香成分在14个品牌卷烟主流烟气中的释放量及在烟气粒相物中的质量分数;利用三点选配法测定了21种酸香成分在乙醇中的嗅觉阈值,并结合其在卷烟烟气粒相物中的质量分数,计算了14个品牌卷烟烟气粒相物中各酸香成分的香气活性值,推测了21种酸香成分的贡献度。结果表明:①常规和低焦油烤烟型卷烟中释放量较大的酸香成分均为乙酸、丙酸和2-氧代丙酸,混合型卷烟释放量较大的酸香成分是乙酸、丙酸和3-甲基戊酸。②混合型卷烟主流烟气中21种酸香成分的释放总量及总质量分数明显高于烤烟型卷烟。③异戊酸和乙酸对烤烟型卷烟主流烟气酸香贡献最大,异戊酸、3-甲基戊酸和乙酸对混合型卷烟主流烟气酸香贡献最大。     

Development of a method to assess cigarette smoke intake

Tar and nicotine deliveries of cigarettes measured using current standardized smoking machine protocols provide poor estimates of smoke exposure. The characteristics of human smoking behavior vary considerably and differ from the rigid parameters used with current standardized smoking machine protocols. Current alternatives, including measurement of biomarkers, are invasive, time-dependent, and can be too expensive to be used as mechanisms for carrying out large-scale investigations required to help determine the influence of cigarette design on smoking behaviors. To obtain more reasonable estimates of mainstream smoke exposure, we developed a method to quantitatively measure solanesol, a naturally occurring component in tobacco that is deposited during smoking in the cigarette filter butt. Quantification of solanesol extracted from the filters using liquid chromatography and tandem mass spectrometry is efficient, rapid, and extremely reliable. We found that the amount of solanesol deposited in a cigarette filter is related to the mainstream smoke deliveries of tar and nicotine under a variety of smoking conditions. In addition, the amount of solanesol trapped in the filter remains stable at least 4 weeks after smoking. Measuring solanesol in cigarette filters as an exposure marker provides a noninvasive means to obtain reasonable estimates of mainstream tar and nicotine smoke deliveries under a wide variety of smoking conditions.     

Determination of tar, nicotine, and carbon monoxide yields in the mainstream smoke of selected international cigarettes

Objective: Survey of nicotine, tar, and carbon monoxide (CO) smoke deliveries from 77 cigarette brands purchased in 35 countries was conducted using a standardised machine smoking method. The goal of this study was to determine regional variations and differences in the tar, nicotine, and CO smoke yields of a cigarette brand manufactured by a leading transnational corporation and of non-US locally popular cigarette brands.

Design: The majority of the cigarettes were purchased in each of the participating countries by delegate members of the World Health Organization and forwarded to the Centers for Disease Control and Prevention for analysis. Smoke deliveries were determined using a standardised smoking machine method and subsequent gravimetric and gas chromatography analysis.

Results: The smoke deliveries varied widely. Mainstream smoke deliveries varied from 6.8 to 21.6 mg tar/cigarette, 0.5 to 1.6 mg nicotine/cigarette, and 5.9 to 17.4 mg CO/cigarette. In addition to the smoke deliveries, the cigarettes were examined to determine physical parameters such as filter composition, length, and ventilation levels.

Conclusion: Analysis of the smoke deliveries suggested that cigarettes from the Eastern Mediterranean, Southeast Asia, and Western Pacific WHO regions tended to have higher tar, nicotine, and CO smoke deliveries than did brands from the European, American, or African WHO regions surveyed.

     

薄荷类爆珠卷烟中薄荷醇的分布与转移

为考察薄荷醇在薄荷类爆珠卷烟中的分布及转移,剖析了薄荷醇在3个卷烟样品的烟支滤嘴、爆珠、烟丝、卷烟纸中的含量分布、主流烟气转移、逐口抽吸转移及不同放置时间的变化规律。结果表明:①烟支中薄荷醇的含量分布为:卷烟纸 ? 烟丝 < 滤嘴 < 爆珠,说明烟支近嘴端高比例分布有利于薄荷醇在主流烟气中的迁移;②主流烟气薄荷醇转移率8.90%~10.25%,滤嘴截留率67.18%~73.07%,说明大部分薄荷醇在抽吸过程中被截留在滤嘴中,薄荷醇的有效利用率较低;③随着卷烟的抽吸,主流烟气逐口薄荷醇的转移量也随之增加,前3口薄荷醇转移量增加较快,第4口开始呈稳步增加趋势,最后1口或倒数第2口达最大值,这与烟支抽吸过程凉感由弱到强一致;④爆珠中薄荷醇在放置12个月内未呈明显变化;滤嘴、烟丝、主流烟气薄荷醇放置前6个月内未呈明显变化,但放置9个月后呈减少趋势,12个月后呈明显加速减少趋势,即薄荷类卷烟的市场货架期最好控制在1年以内。      

The effect of modified starches on the adsorption of cigarette mainstream smoke composition

In this work modified starches such as porous starch (PS) and cross‐linked phosphorylated porous starch (PPS) were used as tobacco filter to investigate their adsorption efficiency on the tar, ammonia (NH₃), hydrocyanic acid (HCN), crotonaldehyde, and total particulate matter (TPM) in mainstream cigarette smoke. The pore properties and structural stability of the modified starches have been evaluated and the adsorption relationship between the modified starches and the main toxicants in tobacco smoke has also been established. Analytes of mainstream smoke from experimental cigarettes show reductions in yields of some measured constituents in mainstream cigarette smoke, such as tar, HCN, NH₃, crotonaldehyde, and TPM. The largest reductions are for NH₃ levels, up to 35.93% in one case, observed from the tobacco filter containing PPS. The largest reductions in mainstream yields of HCN (13.04%) and crotonaldehyde (31.06%) smoke toxicants were also observed. These results indicate that reducing exposure to some smoke toxicants is possible using the modified starches such as PS and PPS as tobacco filter.     

Effects of low nicotine content cigarettes on smoke intake.

Cigarettes with selective reductions in nicotine delivery have been considered as potential tools to prevent or treat nicotine dependence or to reduce harm by virtue of reduced nicotine and nitrosamine delivery. An important question is whether individuals smoke these products more intensively, as has been shown to occur with ventilated-filter cigarettes. To investigate this issue, we compared conventional highly ventilated filter cigarettes, having very low tar and nicotine yields when smoked by Federal Trade Commission method (1 mg tar, 2 mg carbon monoxide [CO],.2 mg nicotine), with low nicotine content cigarettes, manufactured from a genetically modified strain of tobacco, which had higher tar but lower nicotine yield (14 mg tar, 13 mg CO,.02 mg nicotine). A total of 16 cigarette smokers participated in two 8-hr sessions (order counterbalanced) during which they smoked each type of cigarette ad libitum. Expired-air CO, plasma nicotine, and smoking topography measures were collected. Subjects showed significant increases in smoking when using the highly ventilated filter cigarettes, and puff volume was significantly greater than with the low nicotine content cigarettes. Subjects achieved an expired-air CO level 74% as high as with the low nicotine content cigarettes; the latter produced CO levels similar to those measured at baseline when subjects smoked their habitual brands of cigarettes. Plasma nicotine levels obtained when subjects smoked the highly ventilated filter cigarettes also were significantly higher than when they smoked the low nicotine content cigarettes. These results indicate that the delivery of substantial amounts of smoke, with selective reductions in nicotine yield, appears to prevent compensatory smoking behavior. Further studies should determine whether similar results are obtained in naturalistic environments.     

TDLAS技术在线分析主流烟气气相物中CO的逐口释放特征

为准确分析卷烟主流烟气气相物中CO的逐口释放特征,改造了单孔道吸烟机,建立了一套基于可调谐二极管半导体激光吸收光谱(TDLAS)技术的卷烟主流烟气逐口在线分析系统。利用该系统,分析了管路和滤片夹持器残留对烟气逐口分析结果的影响,对4种不同类型卷烟中CO的逐口释放量进行了检测,探讨了其传递规律。结果表明:①清除残留前后CO的逐口传递规律明显不同;②在清除模式下,主流烟气中CO的释放量先降低后逐口增加,其中第2口的CO释放量最低。与传统检测方法相比,基于TDLAS技术的改造型单孔道吸烟机,能快速完成烟气中CO的检测,并有效避免烟气中其他成分的干扰。      

Gender differences relative to smoking behavior and emissions of toxins from mainstream cigarette smoke.

This study examined whether gender differences exist in the exposure to select mainstream cigarette smoke toxins as a result of differences in smoking behavior or type of cigarettes smoked among 129 female and 128 male smokers. Smoking topography data indicated that, compared with men, women took smaller puffs (37.6 ml/puff vs. 45.8 ml/puff; p = .0001) of shorter duration (1.33 s/puff vs. 1.48 s/puff; p = .002) but drew more puffs per cigarette (13.5 vs. 12.0; p = .001) and left longer butts (36.3 mm or 40.2% of cigarette length vs. 34.3 mm or 39.2% of cigarette length; p = .01). These trends were similar in both African Americans and European Americans. The emissions of select toxins per cigarette, as determined by mimicking human smoking behaviors were greater among the male smokers than the female smokers and correlated significantly with delivered smoke volume per cigarette. The geometric means of emissions of nicotine from cigarettes were 1.92 mg/cigarette (95% CI = 1.80-2.05) for women versus 2.20 (95% CI = 2.04-2.37) for men (p = .005). Cigarettes smoked by women yielded 139.5 ng/cigarette of 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK; 95% CI = 128.8-151.0), compared with 170.3 ng/cigarette (95% CI = 156.3-185.6) for men (p = .0007); benzo(a)pyrene (BaP) emissions were 18.0 ng/cigarette (95% CI = 17.0-19.0) for women and 20.5 ng/cigarette (95% CI = 18.8-22.3) for men (p = .01). The gender differences with regard to cigarette smoke yields of toxins were more profound in European Americans than in African Americans. On average, African American men's smoking habits produced the highest emissions of select toxins from cigarettes, and European American female smokers had the lowest exposure to carcinogens and toxins. Several studies have suggested that women may be more susceptible than men to the ill effects of carcinogens in tobacco and tobacco smoke, whereas other studies have not found differences in lung cancer risk between men and women. The present study suggests that gender differences in exposure to tobacco smoke cannot account for a higher rate of lung cancer in female smokers compared with male smokers.     

一些醛酮类香料在卷烟烟丝和滤嘴中的转移行为

采用烟丝注射和滤棒添加方式进行了12种醛酮类香料单体的卷烟加香试验,并采用同时蒸馏萃取以及气相色谱和气相色谱/质谱联用等方法分别测定了这些醛酮类香料单体在烟丝和滤棒中的持留率、迁移率,及其向主流烟气中的转移率.结果显示:①烟丝加香醛酮类香料在烟丝中的持留率均低于嘴棒加香在滤嘴中的持留率,烟丝加香醛酮类香料向滤嘴中的迁移率均高于滤棒加香向烟丝中的迁移率;②滤棒加香更有利于低沸点醛酮类香料向主流烟气粒相中的转移;③互为同分异构体的苯乙醛和苯乙酮,辛醛和2-辛酮,2-庚酮、庚醛和2,5-己二酮都遵守沸点越高烟气转移率越高的规律;④滤棒加香有利于低沸点醛酮类同系物香料烟气转移率的提高.     

UPLC-MS/MS测定卷烟烟气、滤嘴和烟灰中5种常用杀菌剂及其转移行为研究

建立了UPLC-MS/MS测定主流烟气总粒相物、气相物、滤嘴、烟蒂烟丝和烟灰中霜霉威、多菌灵、稻瘟灵、三唑醇和三唑酮含量的方法,样品经乙腈或甲醇提取,分散固相萃取后,进行UPLC-MS/MS分析。5种杀菌剂在各基质中的检出限为0.325~1.832ng/cig,平均回收率为90.9%~111.8%,RSD为1.3%~10.1%。应用该方法研究了标准卷烟加标样品和自然高残留样品中杀菌剂的烟气转移率,结果表明:标准卷烟加标样品中,5种杀菌剂向主流烟气总粒相物、滤嘴中的平均转移率分别为29.4%和11.0%,向烟蒂烟丝和烟灰中平均转移率为1.6%和0.2%,主流烟气气相物中则未检出杀菌剂;主流烟气总粒相物中,多菌灵的转移率较低（<5%）,其它4种杀菌剂则接近或超过30%。自然高残留卷烟样品中,5种杀菌剂向烟气总粒相物中平均转移率为3.7%,在滤嘴中平均转移率为2.2%。卷烟实际燃吸过程中5种杀菌剂向烟气总粒相物转移率明显低于加标研究结果;若采用加标研究结果,成品卷烟杀菌剂残留对吸烟者的健康风险将被高估。      

卷烟主流烟气粒相物中逐口生物碱含量测定及其递送规律

为测定卷烟烟气总粒相物中5种生物碱(烟碱、降烟碱、麦斯明、假木贼碱和新烟草碱),采用经改造的吸烟机对卷烟进行抽吸,用剑桥滤片捕集20支卷烟的每口烟气总粒相物,滤片经超声波萃取、离心后,取上层清液用GC/MS进行测定分析.结果显示:①利用该方法在所测定的5种生物碱中,测定结果的相对标准偏差为1.33%～7.58%,各生物碱的加标回收率为94%～106%;②逐口TPM量、逐口烟碱量以及逐口麦斯明量逐渐升高,逐口TPM量和逐口烟碱量在每口间传递的规律性最强;③降烟碱量都比较低,没有发现降烟碱逐口量随口数的明显变化趋势,每口之间都比较平稳,混合型卷烟F的降烟碱总量最大;④卷烟D、F和G等低焦油或混合型卷烟的主流烟气TPM中5种生物碱单口传递量较之于其它卷烟偏低.该方法适用于卷烟主流烟气总粒相物中生物碱含量的测定.