Particle-bound reactive oxygen species (PB-ROS) emissions and formation pathways in residential wood smoke under different combustion and aging conditions
Wood combustion emissions can induce oxidative stress in the human respiratory tract by reactive oxygen species (ROS) in the aerosol particles, which are emitted either directly or formed through oxidation in the atmosphere. To improve our understanding of the particle-bound ROS (PB-ROS) generat...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2018-05-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://www.atmos-chem-phys.net/18/6985/2018/acp-18-6985-2018.pdf |
| _version_ | 1818062558345560064 |
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| author | J. Zhou J. Zhou P. Zotter E. A. Bruns G. Stefenelli D. Bhattu S. Brown S. Brown A. Bertrand A. Bertrand N. Marchand H. Lamkaddam J. G. Slowik A. S. H. Prévôt U. Baltensperger T. Nussbaumer I. El-Haddad J. Dommen |
| author_facet | J. Zhou J. Zhou P. Zotter E. A. Bruns G. Stefenelli D. Bhattu S. Brown S. Brown A. Bertrand A. Bertrand N. Marchand H. Lamkaddam J. G. Slowik A. S. H. Prévôt U. Baltensperger T. Nussbaumer I. El-Haddad J. Dommen |
| author_sort | J. Zhou |
| collection | DOAJ |
| description | Wood combustion emissions can induce oxidative stress in the human
respiratory tract by reactive oxygen species (ROS) in the aerosol particles,
which are emitted either directly or formed through oxidation in the
atmosphere. To improve our understanding of the particle-bound ROS (PB-ROS)
generation potential of wood combustion emissions, a suite of smog chamber
(SC) and potential aerosol mass (PAM) chamber experiments were conducted
under well-determined conditions for different combustion devices and
technologies, different fuel types, operation methods, combustion regimes,
combustion phases, and aging conditions. The PB-ROS content and the
chemical properties of the aerosols were quantified by a novel ROS analyzer
using the DCFH (2′,7′-dichlorofluorescin) assay and a high-resolution
time-of-flight aerosol mass spectrometer (HR-ToF-AMS). For all eight
combustion devices tested, primary PB-ROS concentrations substantially increased
upon aging. The level of primary and aged PB-ROS emission factors
(EF<sub>ROS</sub>) were dominated by the combustion device (within different
combustion technologies) and to a greater extent by the combustion regimes:
the variability within one device was much higher than the variability of
EF<sub>ROS</sub> from different devices. Aged EF<sub>ROS</sub> under bad
combustion conditions were ∼ 2–80 times higher than under optimum
combustion conditions. EF<sub>ROS</sub> from automatically operated combustion
devices were on average 1 order of magnitude lower than those from manually
operated devices, which indicates that automatic combustion devices
operated at optimum conditions to achieve near-complete combustion should be
employed to minimize PB-ROS emissions. The use of an electrostatic
precipitator decreased the primary and aged ROS emissions by a factor of
∼ 1.5 which is however still within the burn-to-burn variability. The
parameters controlling the PB-ROS formation in secondary organic aerosol were
investigated by employing a regression model, including the fractions of the
mass-to-charge ratios <i>m</i>∕<i>z</i> 44 and 43 in secondary organic aerosol (SOA; <i>f</i><sub>44 − SOA</sub> and <i>f</i><sub>43 − SOA</sub>), the OH exposure, and the total organic
aerosol mass. The regression model results of the SC and PAM chamber aging
experiments indicate that the PB-ROS content in SOA seems to increase with
the SOA oxidation state, which initially increases with OH exposure and
decreases with the additional partitioning of semi-volatile components with
lower PB-ROS content at higher OA concentrations, while further aging seems
to result in a decay of PB-ROS. The results and the special data analysis
methods deployed in this study could provide a model for PB-ROS analysis
of further wood or other combustion studies investigating different
combustion conditions and aging methods. |
| first_indexed | 2024-12-10T14:06:07Z |
| format | Article |
| id | doaj.art-fa454512ae5245d78caa855c564d661d |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-10T14:06:07Z |
| publishDate | 2018-05-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-fa454512ae5245d78caa855c564d661d2022-12-22T01:45:39ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242018-05-01186985700010.5194/acp-18-6985-2018Particle-bound reactive oxygen species (PB-ROS) emissions and formation pathways in residential wood smoke under different combustion and aging conditionsJ. Zhou0J. Zhou1P. Zotter2E. A. Bruns3G. Stefenelli4D. Bhattu5S. Brown6S. Brown7A. Bertrand8A. Bertrand9N. Marchand10H. Lamkaddam11J. G. Slowik12A. S. H. Prévôt13U. Baltensperger14T. Nussbaumer15I. El-Haddad16J. Dommen17Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, Switzerlandnow at: Graduate School of Global Environmental Studies, Kyoto University, Kyoto, 606-8501, JapanLucerne University of Applied Sciences and Arts, Engineering and Architecture, Bioenergy Research, 6048 Horw, SwitzerlandLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, SwitzerlandLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, SwitzerlandLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, SwitzerlandLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, SwitzerlandInstitute for Atmospheric and Climate Science, ETH, Zurich, SwitzerlandLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, SwitzerlandAix Marseille Univ, CNRS, LCE, Marseille, FranceAix Marseille Univ, CNRS, LCE, Marseille, FranceLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, SwitzerlandLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, SwitzerlandLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, SwitzerlandLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, SwitzerlandLucerne University of Applied Sciences and Arts, Engineering and Architecture, Bioenergy Research, 6048 Horw, SwitzerlandLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, SwitzerlandLaboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232 Villigen PSI, SwitzerlandWood combustion emissions can induce oxidative stress in the human respiratory tract by reactive oxygen species (ROS) in the aerosol particles, which are emitted either directly or formed through oxidation in the atmosphere. To improve our understanding of the particle-bound ROS (PB-ROS) generation potential of wood combustion emissions, a suite of smog chamber (SC) and potential aerosol mass (PAM) chamber experiments were conducted under well-determined conditions for different combustion devices and technologies, different fuel types, operation methods, combustion regimes, combustion phases, and aging conditions. The PB-ROS content and the chemical properties of the aerosols were quantified by a novel ROS analyzer using the DCFH (2′,7′-dichlorofluorescin) assay and a high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS). For all eight combustion devices tested, primary PB-ROS concentrations substantially increased upon aging. The level of primary and aged PB-ROS emission factors (EF<sub>ROS</sub>) were dominated by the combustion device (within different combustion technologies) and to a greater extent by the combustion regimes: the variability within one device was much higher than the variability of EF<sub>ROS</sub> from different devices. Aged EF<sub>ROS</sub> under bad combustion conditions were ∼ 2–80 times higher than under optimum combustion conditions. EF<sub>ROS</sub> from automatically operated combustion devices were on average 1 order of magnitude lower than those from manually operated devices, which indicates that automatic combustion devices operated at optimum conditions to achieve near-complete combustion should be employed to minimize PB-ROS emissions. The use of an electrostatic precipitator decreased the primary and aged ROS emissions by a factor of ∼ 1.5 which is however still within the burn-to-burn variability. The parameters controlling the PB-ROS formation in secondary organic aerosol were investigated by employing a regression model, including the fractions of the mass-to-charge ratios <i>m</i>∕<i>z</i> 44 and 43 in secondary organic aerosol (SOA; <i>f</i><sub>44 − SOA</sub> and <i>f</i><sub>43 − SOA</sub>), the OH exposure, and the total organic aerosol mass. The regression model results of the SC and PAM chamber aging experiments indicate that the PB-ROS content in SOA seems to increase with the SOA oxidation state, which initially increases with OH exposure and decreases with the additional partitioning of semi-volatile components with lower PB-ROS content at higher OA concentrations, while further aging seems to result in a decay of PB-ROS. The results and the special data analysis methods deployed in this study could provide a model for PB-ROS analysis of further wood or other combustion studies investigating different combustion conditions and aging methods.https://www.atmos-chem-phys.net/18/6985/2018/acp-18-6985-2018.pdf |
| spellingShingle | J. Zhou J. Zhou P. Zotter E. A. Bruns G. Stefenelli D. Bhattu S. Brown S. Brown A. Bertrand A. Bertrand N. Marchand H. Lamkaddam J. G. Slowik A. S. H. Prévôt U. Baltensperger T. Nussbaumer I. El-Haddad J. Dommen Particle-bound reactive oxygen species (PB-ROS) emissions and formation pathways in residential wood smoke under different combustion and aging conditions Atmospheric Chemistry and Physics |
| title | Particle-bound reactive oxygen species (PB-ROS) emissions and formation pathways in residential wood smoke under different combustion and aging conditions |
| title_full | Particle-bound reactive oxygen species (PB-ROS) emissions and formation pathways in residential wood smoke under different combustion and aging conditions |
| title_fullStr | Particle-bound reactive oxygen species (PB-ROS) emissions and formation pathways in residential wood smoke under different combustion and aging conditions |
| title_full_unstemmed | Particle-bound reactive oxygen species (PB-ROS) emissions and formation pathways in residential wood smoke under different combustion and aging conditions |
| title_short | Particle-bound reactive oxygen species (PB-ROS) emissions and formation pathways in residential wood smoke under different combustion and aging conditions |
| title_sort | particle bound reactive oxygen species pb ros emissions and formation pathways in residential wood smoke under different combustion and aging conditions |
| url | https://www.atmos-chem-phys.net/18/6985/2018/acp-18-6985-2018.pdf |
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