scholarly journals Size Distribution of Particulate Matter in Indoor Environment During Nanomaterial Paint Application

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Barbora ŠVÉDOVÁ ◽  
Marek KUCBEL ◽  
Helena RACLAVSKÁ ◽  
Konstantin RACLAVSKÝ ◽  
Pavel KANTOR
Keyword(s):  
Grain Size ◽  
Particulate Matter ◽  
Size Distribution ◽  
Mass Concentration ◽  
Indoor Environment ◽  
Cascade Impactor ◽  
Size Class ◽  
Aerodynamic Diameter ◽  
Particle Mass Concentration ◽  
Number Of Particles

Due to the increasing production and development of nanoparticles, it has become necessary to control the exposure to ultrafineparticles (aerodynamic diameter < 0.1 μm) when handling nanopaints. The paper deals with the number and mass distributionof particulate matter (PM) in an indoor environment before, during and after the application of paint Protectam FN containingtitanium nanoparticles. The size distribution determination was performed by the electrical low-pressure cascade impactor (ELPI+)in the range from 0.006 μm to 9.93 μm. The highest number of particles was observed in the range from 0.006 to 0.0175 μm. Theparticulate mass concentration ranging from 0.0175 to 0.0307 μm did not represent more than 0.5% of the sum of PM10 during theindividual measurements. The particle mass concentration increased in the range of 0.0175 to 0.0307 μm, after application of thecoating nanopaint Protectam FN, but it was observed that the total number of particles has decreased. During the days followingthe application of the nanopaint, the mass concentration in this grain size class was significantly reduced.

Grain size distribution of particulate matter and sediment in extensive freshwater bodies in pre-Amazonian floodplain, Baixada Maranhense, Brazil

2009 ◽  
Vol 30 (6) ◽  
pp. 964-970
Author(s):  
Osamu Mitamura ◽  
Nobutada Nakamoto ◽  
Maria do Socorro Rodrigues Ibanez ◽  
Jose Policarpo Costa Neto ◽  
Ricardo Barbieri
Keyword(s):  
Grain Size ◽  
Particulate Matter ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Freshwater Bodies

scholarly journals Mass Concentration and Size-Distribution of Atmospheric Particulate Matter in an Urban Environment

2017 ◽  
Vol 17 (5) ◽  
pp. 1142-1155 ◽  
Author(s):  
Sabrina Rovelli ◽  
Andrea Cattaneo ◽  
Francesca Borghi ◽  
Andrea Spinazzè ◽  
Davide Campagnolo ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Urban Environment ◽  
Size Distribution ◽  
Mass Concentration ◽  
Atmospheric Particulate Matter ◽  
Atmospheric Particulate

Study on the Influence of Air Tightness of the Building Envelope on Indoor Particle Concentration

2020 ◽  
Vol 12 (5) ◽  
pp. 1708 ◽  
Author(s):  
Liang Yu ◽  
Ning Kang ◽  
Weikuan Wang ◽  
Huiyu Guo ◽  
Jia Ji
Keyword(s):  
Particle Size ◽  
Particulate Matter ◽  
Mass Concentration ◽  
Penetration Rate ◽  
Particle Mass ◽  
Office Building ◽  
Measuring Point ◽  
Ratio Measurement ◽  
Air Tightness ◽  
Particle Mass Concentration

In order to grasp the building palisade structure tightness of indoor particulate matter mass concentration based on the particle penetration mechanism and settlement characteristics, this article analyzes the measurements of two different types of building air tightness of a Shenyang university office building in terms of indoor and outdoor particulate matter mass concentration levels from 2016-1-09 to 1-22, 2016-7-18 to 8-03, and 2017-2-28 to 3-13. The building outside the closed window that had no indoor source condition, the indoor office building and outdoor particle mass concentration, and the aperture size and shape of the envelope were analyzed to carry on the numerical simulation research by Fluent software, which was then analyzed; the results reveal that the measuring point of the I/O ratio is less than point B of the I/O ratio, measurement points of A linear regression fitting degree is lower than the fit of the measuring point B, and the causes for the measuring point A tightness (level 8) is superior to the measuring point B (level 4). When the gap height h is greater than 0.5 mm, the penetration rate of particles within the range of 0.25–2.5 μm particle size is close to 1. In different gap depths, the penetration rate of particles within the range of 0.1–1 μm particle size was close to 1. In diverse pressure difference, the 0.25–2.5 μm particles within the scope of penetration rate P is close to 1, the gap on both sides of the differential value ΔP; the greater the particle, the higher penetration rate. The larger the right-angle number of gap n, the lower the penetration rate of particles. The L-shaped gap and U-shaped gap have significantly better barrier effects in larger and smaller particles than the rectangular gap. The research results in this paper can help people understand and effectively control the influence of outdoor particles on the indoor air quality and provide reference data for the prediction of indoor particle mass concentration in buildings, which has theoretical basis and practical significance.

TOTAL PARTICULATE MATTER, PM10, PM2.5 EMISSIONS FROM PALM OIL MILL BOILER

2016 ◽  
Vol 78 (6-11) ◽  
Author(s):  
M. M. Syahirah ◽  
M. Rashid ◽  
J. Nor Ruwaida
Keyword(s):  
Particulate Matter ◽  
Size Distribution ◽  
Palm Oil ◽  
Mass Concentration ◽  
Total Particulate Matter ◽  
Particulate Emission ◽  
Particulate Size ◽  
Particulate Mass ◽  
Palm Oil Mill ◽  
Pm2.5 And Pm10

Utilization of fiber and shell as boiler fuel in palm oil mill industry generates particulate emission that need to be controlled before emitting to the environment. This study investigates the particulate mass size distribution of particulate matter sampled from palm oil mills having different boiler capacities. The particulate emission was performed at the stack following US EPA Method 17 and while the particulate size distribution was determined using particle size analyzer. Results showed that the total particulate mass concentration varied between 0.42 and 3.77 g/Nm3 (corrected at 7% O2). The emitted particulate was mainly found in the coarse particles, with 50% cumulative size distribution ranged from 21 to 38 µm. The particulate mass concentration of PM2.5 and PM10 of the total particulate emission was varied from 0.03 to 0.30 g/Nm3 and 0.37 to 0.73 g/Nm3, respectively. This contributes 0.8 to 71% and 13 to 95% of the total particulate mass concentration, respectively.

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