Interaction between carbon or iron aerosol particles and ozone

Fenidel, W.; Matter, Daniel; Burtscher, H.; Schmidt‐Ott, A.

doi:10.1016/1352-2310(95)00038-z

Cited by 86 publications

(50 citation statements)

References 10 publications

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“…3). This reduction can be partly due to the aggregate structure of soot particles, which provide a large specific surface area for heterogeneous interactions with reactive trace gases such as ozone [22].…”

Section: Courses Of Bc and Trace Gas Concentrationmentioning

confidence: 99%

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Black carbon aerosol at the background site in the coastal zone of the Baltic Sea

Andriejauskienė¹

2008

Lithuanian J. Phys.

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Carbon particulate matter constitutes an important portion of the atmospheric aerosol and directly participates in the formation of the Earth's radiation balance by influencing the global and regional climate. Continuous data (March, April, 2002) of 20-minute concentrations of airborne black carbon (BC) particles at the Preila Environmental Pollution Research Station (55• 20 N, 21• 00 E) have been used for the investigation of diurnal and weekday variation as well as the different air mass influence on BC transport. The measurement of BC mass concentration with the Aethalometer TM , Model AE40 Spectrum, manufactured by Optotek, Slovenia was carried out. The origin of an air mass was detected by using air mass backward trajectories calculated by the Hybrid Single-Particle Lagrangian Integrated Trajectories (HYSPLIT) model. Approximately 73% of BC measured concentrations were found in the range of a low value mode centered at ∼0-1000 ng m −3 . The remaining concentrations were in a high-concentration mode at ∼1000-3000 ng m −3 , probably indicating a direct impact of emissions from combustion activities. BC concentration in various air masses over that period varied from the average value of approximately 140 ng m −3 to the maximum value of 2410 ng m −3 . The highest BC concentrations were associated with the prevailing southern transport air masses. Simultaneously, the daily concentration variation of black carbon and SO2, NO2, O3 was measured and analysed. Total aerosol concentrations and size distributions were measured as well. The aerosol size distribution was plotted as contour plots for each day (as a function of time). Most studies were focused on the BC aerosol particle size distribution and modal aerosol concentration. For each event, the growth rate was calculated graphically from the contour plots ("banana-plots") and was analysed for the possible nucleation events. Some aerosol measurements were carried out at an urban site in order to evaluate the BC concentration of the freshly emitted traffic aerosols.

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Section: Courses Of Bc and Trace Gas Concentrationmentioning

confidence: 99%

“…The adsorbed oxygen atom can then combine with another adsorbed oxygen atom to form molecular oxygen. This catalytic reaction causes dramatic ozone depletion in the atmosphere [22].…”

Section: Diurnal Variation Of Bc Concentrationmentioning

confidence: 99%

Black carbon aerosol at the background site in the coastal zone of the Baltic Sea

Andriejauskienė¹

2008

Lithuanian J. Phys.

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“…The atmospheric BC directly accounts for the reduction of the incoming short-wave solar radiation, leading to heating of the atmosphere. BC aerosols play an important role in tropospheric chemistry due to their porous characteristics and adsorptive properties that aid in some of the chemical transformations like oxidation of SO 2 to SO 4 , conversion of HNO 3 vapors to NO and NO 2 (Disselkamp et al, 2000) and destruction of O 3 and formation of CO (Fedel et al, 1995;Latha et al, 2004). For the human health, these particles, which have sizes in the submicron range, pose a great threat to pulmonary diseases as they can penetrate the respiratory system, reach in the lungs and also carrying some toxic elements.…”

Section: Introductionmentioning

confidence: 99%

Black carbon aerosol mass concentration variation in urban and rural environments of India—a case study

Badarinath

Kharol

Reddy

et al. 2009

Atmospheric Science Letters

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The present study provides an account of the black carbon (BC) aerosol mass concentration variation in contrasting environments of India corresponding to the urban and rural areas of Hyderabad and Anantapur during August 2006. The study period corresponds to the monsoon season over the Indian region. The diurnal variation of BC showed two peaks, during morning and late evening, which are mostly, related to the diurnal changes in the local boundary layer and traffic density patterns. BC mass concentrations over Hyderabad are estimated to be 92% higher compared to those at the Anantapur site suggesting considerable contrast in its spatial variations.

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“…It was observed that during the morning and evening peak traffic hours (Fig. 5a) high BC mass concentration showed significant O 3 reduction attributing to BC-O 3 heterogeneous chemistry (Latha and Badarinath 2004;Fendel et al 1995), besides NO titration.…”

Section: Black Carbonmentioning

confidence: 99%

Environmental monitoring of surface ozone and other trace gases over different time scales: chemistry, transport and modeling

Venkanna

Nikhil

Rao

et al. 2014

Int. J. Environ. Sci. Technol.

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Increasing concentration of tropospheric ozone (O 3 ) is a serious air pollution problem faced commonly by the urban people. The present study emphasizes on variations of air pollutant concentrations viz., O 3 , nitrogen oxides (NO x ), carbon monoxide (CO), sulfur dioxide (SO 2 ) and black carbon (BC) at a tropical urban site located in the Deccan plateau region with semi-arid climate. The air monitoring site revealed typical diurnal/seasonal trends attributing to the complex chemistry of surface O 3 formation from its precursors. Role of SO 2 in the formation of free radical (HO Á 2 ) and its impact on O 3 concentration is distinguished part of the study. The results showed the highest mean O 3 in summer (57.5 ± 15.2 ppbv) followed by winter and monsoon. Observations of BC aerosols showed the highest mean value during winter (8.2 ± 2 lg m -3 ) and the lowest in monsoon (4.2 ± 1 lg m -3 ). Besides local influences, long-range transport of air masses were also studied by simulating back trajectories at different elevations during the study period. Furthermore, statistical analysis and modeling was performed with both linear (regression) and nonlinear (neural network) methods.

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Interaction between carbon or iron aerosol particles and ozone

Cited by 86 publications

References 10 publications

Black carbon aerosol at the background site in the coastal zone of the Baltic Sea

Black carbon aerosol at the background site in the coastal zone of the Baltic Sea

Black carbon aerosol mass concentration variation in urban and rural environments of India—a case study

Environmental monitoring of surface ozone and other trace gases over different time scales: chemistry, transport and modeling

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