<abstract xmlns="http://www.w3.org/1999/xhtml">This study attempted to resolve a controversy related to the presence of dibenz[<italic>a,j</italic>]acridine and dibenz[<italic>a,h</italic>]acridine in the particulate phase of cigarette smoke. Smoking was performed using FTC conditions (35 mL puff volume, 2 sec. puff, 1 min. interval) on a Borgwaldt RM 20/CS smoking machine. The particulate phase of forty cigarettes was collected on 92 mm Cambridge filter pads. Pads were combined to analyze the particulate phase of the mainstream smoke from between 120 and 320 cigarettes. In an initial scheme of analysis, the pads were extracted with an acidic aqueous solution. This aqueous solution was then washed with CH2Cl2 and the organic phase discarded. The aqueous solution was then changed to basic and extracted with CH2Cl2, which was concentrated and analyzed via GC/MS. The dibenzacridine could not be detected utilizing this scheme, even when the pads had been spiked with a few thousand nanograms of dibenzacridine. After using several other organic solvents (cyclohexane, CHCl3, and benzene) to eliminate the possibility that the extraction efficiency of CH2Cl2 was poor, it was determined that dibenzacridine was being discarded with the first CH2Cl2 wash. A successful separation scheme was developed by extracting the smoked pad with an aqueous acidic solution, followed by extraction of the aqueous phase with CH2Cl2without pH change. The CH2Cl2 extract was concentrated under nitrogen and 1 µL injected for GC/MS analysis. Quantification was achieved by spiking the pads with dibenz[<italic>a,j</italic>]acridine-<italic>d13</italic> as an internal standard at a level equal to 1.7-2.5 ng/cig. The limit of detection for this technique was approximately 0.5 ng/cig. The chromatographic separation was performed with a 30 m BPX-5 column (0.25 mm i.d., 0.25 µm film thickness). Mass spectral data were acquired in selected ion monitoring (SIM) mode with m/z = 279 for the two dibenzacridine isomers and m/z = 292 for the deuterated internal standard. Three commercial cigarettes were analyzed: two commercial Full Flavor cigarettes, one commercial Light cigarette, and a 1R4F reference cigarette. Neither dibenzacridine isomer was detected in any of the samples analyzed.</abstract>

This study attempted to resolve a controversy related to the presence of dibenz[a,j]acridine and dibenz[a,h]acridine in the particulate phase of cigarette smoke. Smoking was performed using FTC conditions (35 mL puff volume, 2 sec. puff, 1 min. interval) on a Borgwaldt RM 20/CS smoking machine. The particulate phase of forty cigarettes was collected on 92 mm Cambridge filter pads. Pads were combined to analyze the particulate phase of the mainstream smoke from between 120 and 320 cigarettes. In an initial scheme of analysis, the pads were extracted with an acidic aqueous solution. This aqueous solution was then washed with CH2Cl2 and the organic phase discarded. The aqueous solution was then changed to basic and extracted with CH2Cl2, which was concentrated and analyzed via GC/MS. The dibenzacridine could not be detected utilizing this scheme, even when the pads had been spiked with a few thousand nanograms of dibenzacridine. After using several other organic solvents (cyclohexane, CHCl3, and benzene) to eliminate the possibility that the extraction efficiency of CH2Cl2 was poor, it was determined that dibenzacridine was being discarded with the first CH2Cl2 wash. A successful separation scheme was developed by extracting the smoked pad with an aqueous acidic solution, followed by extraction of the aqueous phase with CH2Cl2without pH change. The CH2Cl2 extract was concentrated under nitrogen and 1 µL injected for GC/MS analysis. Quantification was achieved by spiking the pads with dibenz[a,j]acridine-d13 as an internal standard at a level equal to 1.7-2.5 ng/cig. The limit of detection for this technique was approximately 0.5 ng/cig. The chromatographic separation was performed with a 30 m BPX-5 column (0.25 mm i.d., 0.25 µm film thickness). Mass spectral data were acquired in selected ion monitoring (SIM) mode with m/z = 279 for the two dibenzacridine isomers and m/z = 292 for the deuterated internal standard. Three commercial cigarettes were analyzed: two commercial Full Flavor cigarettes, one commercial Light cigarette, and a 1R4F reference cigarette. Neither dibenzacridine isomer was detected in any of the samples analyzed.

Determination of Dibenzacridines in the Particulate Phase of Cigarette Smoke

Brown and Williamson Tobacco Corp., Macon, GA, USA

Contributions to Tobacco & Nicotine Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Determination of Dibenzacridines in the Particulate Phase of Cigarette Smoke"}

This study attempted to resolve a controversy related to the presence of dibenz[a,j]acridine and dibenz[a,h]acridine in the particulate phase of cigarette...

Determination of Dibenzacridines in the Particulate Phase of Cigarette Smoke

Pubblicato online: 30 dic 2014

Pagine: 25 - 31

Ricevuto: 25 ott 1999

Accettato: 17 mar 2000

DOI: https://doi.org/10.2478/cttr-2013-0692

© 2014 Beiträge zur Tabakforschung International

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.