| Title: | Microprobe sampling--photo ionization-time-of-flight mass spectrometry for in situ chemical analysis of pyrolysis and combustion gases: examination of the thermo-chemical processes within a burning cigarette |
| Author(s): | Hertz R; Streibel T; Liu C; McAdam K; Zimmermann R; |
| Address: | "Joint Mass Spectrometry Centre, Chair of Analytical Chemistry, Institute of Chemistry, University of Rostock, Rostock, Germany" |
| DOI: | 10.1016/j.aca.2011.11.059 |
| ISSN/ISBN: | 1873-4324 (Electronic) 0003-2670 (Linking) |
| Abstract: | "A microprobe sampling device (mu-probe) has been developed for in situ on-line photo ionization mass spectrometric analysis of volatile chemical species formed within objects consisting of organic matter during thermal processing. With this approach the chemical signature occurring during heating, pyrolysis, combustion, roasting and charring of organic material within burning objects such as burning fuel particles (e.g., biomass or coal pieces), lit cigarettes or thermally processed food products (e.g., roasting of coffee beans) can be investigated. Due to its dynamic changes between combustion and pyrolysis phases the cigarette smoking process is particularly interesting and has been chosen as first application. For this investigation the tip of the mu-probe is inserted directly into the tobacco rod and volatile organic compounds from inside the burning cigarette are extracted and real-time analyzed as the glowing front (or coal) approaches and passes the mu-probe sampling position. The combination of micro-sampling with photo ionization time-of-flight mass spectrometry (PI-TOFMS) allows on-line intrapuff-resolved analysis of species formation inside a burning cigarette. Monitoring volatile smoke compounds during cigarette puffing and smoldering cycles in this way provides unparalleled insights into formation mechanisms and their time-dependent change. Using this technique the changes from pyrolysis conditions to combustion conditions inside the coal of a cigarette could be observed directly. A comparative analysis of species formation within a burning Kentucky 2R4F reference cigarette with mu-probe analysis reveals different patterns and behaviors for nicotine, and a range of semi-volatile aromatic and aliphatic species" |
| Keywords: | Gases/analysis Hot Temperature Mass Spectrometry/*methods Nicotine/analysis Organic Chemicals/analysis Smoke/*analysis *Smoking Tobacco/*chemistry Volatilization; |
| Notes: | "MedlineHertz, Romy Streibel, Thorsten Liu, Chuan McAdam, Kevin Zimmermann, Ralf eng Netherlands 2012/01/17 Anal Chim Acta. 2012 Feb 10; 714:104-13. doi: 10.1016/j.aca.2011.11.059. Epub 2011 Dec 6" |
