scholarly journals Association between PM10 mass concentration and wind direction in London

2005 ◽  
Vol 6 (4) ◽  
pp. 204-210 ◽  
Author(s):  
Gabriela Sanchez-Reyna ◽  
Kuo-Ying Wang ◽  
J. C. Gallardo ◽  
Dudley E. Shallcross
Keyword(s):  
Wind Direction ◽  
Mass Concentration ◽  
Pm10 Mass

Measurement of PM2.5/PM10 Mass Concentration from Stationary Sources by Virtual Impactors

2017 ◽  
Vol 54 (6) ◽  
pp. 402-405
Author(s):  
Hidehiro Kamiya ◽  
Mayumi Tsukada ◽  
Wladyslaw W. Szymanski ◽  
Norikazu Namiki ◽  
Masashi Wada ◽  
...  
Keyword(s):  
Mass Concentration ◽  
Virtual Impactors ◽  
Pm10 Mass ◽  
Stationary Sources

Comparison Between Light Scattering and Gravimetric Devices for Sampling PM10 Mass Concentration in Livestock Houses

2012 ◽  
Author(s):  
María Cambra-López ◽  
Albert Winkel ◽  
Julio Mosquera ◽  
Nico W. M Ogink ◽  
André J. A Aarnink
Keyword(s):  
Light Scattering ◽  
Mass Concentration ◽  
Pm10 Mass

scholarly journals VARIATION OF PM10 MASS AND AEROSOL NUMBER CONCENTRATIONS IN ŠIAULIAI

2007 ◽  
Vol 15 (1) ◽  
pp. 47-53 ◽  
Author(s):  
Raselė Girgždienė ◽  
Radvilė Rameikytė
Keyword(s):  
Rural Areas ◽  
Mass Concentration ◽  
Meteorological Parameter ◽  
Number Concentration ◽  
Urban Background ◽  
High Particle ◽  
Pollutant Concentrations ◽  
Aerosol Number Concentration ◽  
Pm10 Level ◽  
Pm10 Mass

The urban environment is distinguished by higher aerosol and gaseous pollutant concentrations than those in rural areas. A study of aerosol pollutant behavior was performed in an industrial Lithuanian city of Šiauliai. The PM10 mass concentration and meteorological parameter monitoring data were analysed. The aerosol number concentration was measured during a 10‐day experiment in Šiauliai. Analysis of PM10 showed that the workdays‐weekends phenomenon in the PM10 mass concentration distribution was prevailing. The PM10 mass concentration on workdays was higher in comparison with the concentration at weekends, 24,6 μg/m3 and 21 μg/m3, respectively. Clear PM10 mass concentration dependence on the wind parameters (speed and direction) was found. Linear relationship between aerosol number and PM10 mass concentrations was found at a high particle number concentration (more than 18000 cm−3). PM10 level in Šiauliai was defined as a sum of three sources: regional background, urban background and local sources. Contribution of these sources to the total PM10 mass concentration was estimated to be 36 %, 30 % and 34 %, respectively, during June‐October of 2005.

scholarly journals Variations of PM2.5, PM10 mass concentration and health assessment in Islamabad, Pakistan

2018 ◽  
Vol 133 ◽  
pp. 012031
Author(s):  
Tariq Memhood ◽  
Z Tianle ◽  
I Ahmad ◽  
X Li ◽  
F Shen ◽  
...  
Keyword(s):  
Mass Concentration ◽  
Health Assessment ◽  
Pm10 Mass

Spectral analysis of weekly variation in PM10 mass concentration and meteorological conditions over China

2008 ◽  
Vol 42 (4) ◽  
pp. 655-666 ◽  
Author(s):  
Yong-Sang Choi ◽  
Chang-Hoi Ho ◽  
Deliang Chen ◽  
Yeon-Hee Noh ◽  
Chang-Keun Song
Keyword(s):  
Spectral Analysis ◽  
Mass Concentration ◽  
Meteorological Conditions ◽  
Pm10 Mass

scholarly journals Chemical characterization of the inorganic fraction of aerosols and mechanisms of the neutralization of atmospheric acidity in Athens, Greece

2007 ◽  
Vol 7 (11) ◽  
pp. 3015-3033 ◽  
Author(s):  
E. T. Karageorgos ◽  
S. Rapsomanikis
Keyword(s):  
Mass Concentration ◽  
Fine Fraction ◽  
Ambient Air ◽  
Coarse Fraction ◽  
Particle Mass ◽  
Coarse Particle ◽  
Breathing Zone ◽  
Neutralizing Agent ◽  
Pm10 Mass ◽  
Mass Concentrations

Abstract. The PM10 mass concentration levels and inorganic chemical composition were determined on 12-h resolution sampling during August 2003 and March 2004, in the centre of Athens, Greece. The August 2003 campaign mean PM10 mass concentration, obtained by Beta Attenuation at 5 m above ground in Athinas Street, was 56 μg m−3 while the corresponding value for March 2004 was 92 μg m−3. In both campaigns the E.U. imposed daily limit of 50 μg m−3 was exceeded on several days. During the March campaign, in Athinas Street, additionally obtained DSFU-PM10 (PM10-2.5+PM2.5) gravimetric mass concentrations (mean: 121 μg m−3) in the "breathing zone", at 1.5 m above ground were significantly higher compared to the respective mean PM10 mass concentrations obtained by the same method at 25 m above ground, in a second site (AEDA; mean: 86 μg m−3) also in the centre of the city. The above findings suggest that, for a realistic estimation of the exposure of citizens to particulate matter, PM10 sampling in the "breathing zone" (1.5–3 m above ground) is necessary. Such data are presented for the first time for the centre of Athens. In both campaigns, calcium was found to be the predominant component of the coarse fraction while crust-related aluminosilicates and iron were the other major components. The above elements constitute the most important components of the fine fraction, together with the predominant sulphur. All toxic metals were found in concentrations below the established air quality limits, and most of them in lower concentrations compared to older studies. Lead in particular, appeared mostly in the fine fraction and in very low concentrations compared to studies dating more than a decade back. The predominant ions of the coarse fraction have been found to be Ca2+, NO3−, Na+ and Cl−, while SO42−, Ca2+ and NH4+ were the major ionic components of the fine fraction. In the fine particles, a low molar ratio of NH4+/SO42− indicated an ammonium-poor ambient air, and together with inter-ionic correlations suggested that atmospheric ammonia is the major neutralizing agent of sulfate, while being insufficient to neutralize it to full extend. The formation of NH4NO3 is therefore not favored and additional contribution to the neutralization of acidity has been shown to be provided by Ca2+ and Mg2+. In the coarse particle fraction, the predominantly abundant Ca2+ has been found to correlate well with NO3− and SO42−, indicating its role as important neutralizing agent in this particle size range. The proximity of the location under study to the sea explains the important concentrations of salts with marine origin like NaCl and MgCl2 that were found in the coarse fraction, while chloride depletion in the gaseous phase was found to be limited to the fine particulate fraction. Total analyzed inorganic mass (elemental+ionic) was found to be ranging between approximately 25–33% of the total coarse particle mass and 35–42% of the total fine particle mass.

Cerebral ischemic attack, epilepsy and hospital admitted patients with types of headaches attributed to PM10 mass concentration in Abadan, Iran

2019 ◽  
Vol 41 ◽  
pp. 100541 ◽  
Author(s):  
Esmat Radmanesh ◽  
Heidar Maleki ◽  
Gholamreza Goudarzi ◽  
Atefeh Zahedi ◽  
Sasan Ghorbani Kalkhajeh ◽  
...  
Keyword(s):  
Mass Concentration ◽  
Cerebral Ischemic ◽  
Ischemic Attack ◽  
Pm10 Mass

scholarly journals Comparison between light scattering and gravimetric samplers for PM10 mass concentration in poultry and pig houses

2015 ◽  
Vol 111 ◽  
pp. 20-27 ◽  
Author(s):  
María Cambra-López ◽  
Albert Winkel ◽  
Julio Mosquera ◽  
Nico W.M. Ogink ◽  
André J.A. Aarnink
Keyword(s):  
Light Scattering ◽  
Mass Concentration ◽  
Pm10 Mass

scholarly journals Atmospheric black carbon and warming effects influenced by the source and absorption enhancement in Central Europe

2014 ◽  
Vol 14 (10) ◽  
pp. 14637-14682
Author(s):  
S. Nordmann ◽  
Y. F. Cheng ◽  
G. R. Carmichael ◽  
M. Yu ◽  
H. A. C. Denier van der Gon ◽  
...  
Keyword(s):  
Central Europe ◽  
Cross Section ◽  
Light Absorption ◽  
Radiative Forcing ◽  
Mass Concentration ◽  
Model Simulation ◽  
Absorption Cross ◽  
Model Bias ◽  
Air Mass ◽  
Pm10 Mass

Abstract. Particles containing black carbon (BC), a strong absorbing substance, exert a rather uncertain direct and indirect radiative forcing in the atmosphere. To investigate the mass concentration and absorption properties of BC particles over Central Europe, the model WRF-Chem was used at a resolution of 12 km in conjunction with a high resolution BC emission inventory (EUCAARI 42-Pan-European Carbonaceous Aerosol Inventory; 1/8° × 1/16°). The model simulation was evaluated using measurements of equivalent soot carbon, absorption coefficients and particle number concentrations at 7 sites within the German Ultrafine Aerosol Network, PM10 mass concentrations from the dense measurement network of the German Federal Environmental Agency at 392 monitoring stations, and aerosol optical depth from MODIS and AERONET. A distinct time period (25 March to 10 April 2009) was chosen, during which the clean marine air mass prevailed in the first week and afterwards the polluted continental air mass mainly from south-east dominated with elevated daily average BC concentration up to 4 μg m−3. The simulated PM10 mass concentration, aerosol number concentration and optical depth were in a good agreement with the observations, while the modelled BC mass concentrations were found to be a factor of 2 lower than the observations. Together with backtrajectories, detailed model bias analyses suggested that the current BC emission in countries to the east and south of Germany might be underestimated by a factor of 5, at least for the simulation period. Running the model with upscaled BC emissions in these regions led to a smaller model bias and a better correlation between model and measurement. On the contrary, the particle absorption coefficient was positively biased by about 20% even when the BC mass concentration was underestimated by around 50%. This indicates that the internal mixture treatment of BC in the WRF-Chem optical calculation is unrealistic in our case, which over amplifies the light absorption by BC containing particles. By adjusting the modeled mass absorption cross-section towards the measured values, the simulation of particle light absorption of BC was improved as well. Finally, the positive direct radiative forcing of BC particles at top of the atmosphere was estimated to be in the range of 0 to +4 W m−2 over Germany for the model run with improved BC mass concentration and adjusted BC light absorption cross-section. This treatment lowered the positive forcing of BC by up to 70%, compared with the internal mixing treatment of BC in the model simulation.

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