CONFERENCE PROCEEDING
Emissions of particles and carbonyls from the use of herbal tea sticks
1
Hellenic Open University, Patra, Greece
Tob. Prev. Cessation 2026;12(Supplement 1):A11
ABSTRACT
BACKGROUND-AIM:
Herbal sticks, made of tea and flavors or spices, with or without nicotine, can be used in heated tobacco products devices to subsitute tobacco. The scope of this work is to study the particles and the carbonyls emitted from commercial herbal sticks and the impact of stick flavor, nicotine content and puffing regime on those emissions.
METHODS:
Particles and carbonyls were determined in the mainstream emissions of four types of herbal sticks used with an IQOS device. The emissions were generated using a peristaltic pump under two standard puffing regimes, ISO and Canadian Health Intense regime. Particulate matter (PM) was measured in real time using a Dustrak aerosol monitor and Black Carbon (BC) with an aethalometer. Carbonyls were collected in an impinger containing a 2,4-dinitrophenyhydrazine solution and analyzed with HPLC-UV.
RESULTS:
All tea sticks emit particles of diameter less than 1μm (PM1). PM and BC emissions were 3.75-12.26 mg/stick and 0.009-0.045 mg/stick respectively. Tea sticks also emit carbonyls, mainly acetaldehyde, propionaldehyde and butyraldehyde. The emission of particles and of carbonyls is higher when the puffing regime is more intense. The flavor of the stick and the presence of nicotine had a complex impact on particulate matter and BC emissions.
CONCLUSIONS:
Toxic substances were emitted during tre use of herbal sticks in a heated tobacco products device. The use conditions and the composition of the stick have an impact on those emissions.
Herbal sticks, made of tea and flavors or spices, with or without nicotine, can be used in heated tobacco products devices to subsitute tobacco. The scope of this work is to study the particles and the carbonyls emitted from commercial herbal sticks and the impact of stick flavor, nicotine content and puffing regime on those emissions.
METHODS:
Particles and carbonyls were determined in the mainstream emissions of four types of herbal sticks used with an IQOS device. The emissions were generated using a peristaltic pump under two standard puffing regimes, ISO and Canadian Health Intense regime. Particulate matter (PM) was measured in real time using a Dustrak aerosol monitor and Black Carbon (BC) with an aethalometer. Carbonyls were collected in an impinger containing a 2,4-dinitrophenyhydrazine solution and analyzed with HPLC-UV.
RESULTS:
All tea sticks emit particles of diameter less than 1μm (PM1). PM and BC emissions were 3.75-12.26 mg/stick and 0.009-0.045 mg/stick respectively. Tea sticks also emit carbonyls, mainly acetaldehyde, propionaldehyde and butyraldehyde. The emission of particles and of carbonyls is higher when the puffing regime is more intense. The flavor of the stick and the presence of nicotine had a complex impact on particulate matter and BC emissions.
CONCLUSIONS:
Toxic substances were emitted during tre use of herbal sticks in a heated tobacco products device. The use conditions and the composition of the stick have an impact on those emissions.
| eISSN: | 2459-3087 |
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