Size distribution of airborne particles controls outcome of epidemiological studies

Harrison, Roy M.; Giorio, Chiara; Beddows, D. C. S.; Dall’Osto, Manuel

doi:10.1016/j.scitotenv.2010.09.043

Cited by 46 publications

(47 citation statements)

References 22 publications

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“…In addition, Harrison et al (2010) indicated that relating health outcomes to measured particle mass concentrations can underestimate the public health impacts and emphasized that the regional lung dose, not pollutant exposure, probably drives health outcomes. Therefore, our findings over the contributions of particle sources to regional lung deposition for different particle metrics may help address the question of what is most important metric linked to health effects in epidemiological studies.…”

Section: By Volumementioning

confidence: 99%

Source Apportionment of the Lung Dose of Ambient Submicrometre Particulate Matter

Beddows

Delgado-Saborit

et al. 2016

Aerosol Air Qual. Res.

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Urban ambient aerosols have been of much concern in recent decades due to their effects upon both atmospheric processes and human health. This study aimed to apportion the sources of submicron particles measured at an urban background area in London and to identify which sources are most responsible for particles deposited in the human lung. Particle number size distributions (PNSD) measured by a Scanning Mobility Particle Sizer (TSI, USA), covering the size range of 16.5-604 nm at the London North Kensington background sampling site during 2012 were used in a Positive Matrix Factorization (PMF) model to apportion to six dominant sources of particles. These included local traffic emissions (26.6% by number), aged traffic emissions (29.9%), urban accumulation mode (28.3%), nucleation (6.5%), inorganic secondary aerosol (1.7%) and mixed secondary aerosol (6.9%). Based on the ICRP model, the total deposition efficiencies of submicron particles for the aforementioned sources in the human respiratory tract were 0.57, 0.41, 0.24, 0.62, 0.24 and 0.24, respectively. In terms of source apportionment of particles deposited in the lung, traffic emissions represent the main source of particles deposited by number in both the regional and total lung, accounting for 59 to 71% of total deposited particles, followed by regional accumulation mode (17%) and nucleation (10%) particles. Secondary aerosols only account for 5.1% of total deposited particles by number, but they represent the main source of particles deposited in the lung expressed as surface area (44.6%) and volume (72.3%) of total deposition. The urban accumulation mode contributes 27.3% and 17.3% of total deposited particles by surface area and volume, while traffic emissions contribute 26.6% and 9.7%, respectively. Nucleation contributes only 1.6% and 0.7% of total deposited particles by surface area and volume.

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Section: By Volumementioning

confidence: 99%

Source Apportionment of the Lung Dose of Ambient Submicrometre Particulate Matter

Beddows

Delgado-Saborit

et al. 2016

Aerosol Air Qual. Res.

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“…However, since most 66 studies have used PM 10 or PM 2.5 mass concentrations to investigate correlations with human health 67 outcomes it is likely that the health impacts of PM have been in most cases underestimated 68 (Harrison et al, 2010). Atmospheric aerosol is especially problematic to characterize because of its 69 complex and variable composition, wide size range and a broad spectrum of both natural and 70 Successful analysis of ATOFMS data requires fast and reliable processing and interpretation of the 80 huge amount of data generated.…”

Section: Introduction 64mentioning

confidence: 99%

Comparison of three techniques for analysis of data from an Aerosol Time-of-Flight Mass Spectrometer

Giorio

Tapparo

Dall’Osto

et al. 2012

Atmospheric Environment

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“…The main objective of this work was focus on PM 10 and its bioaccumulations (microbial load) in Makkah during Hajj seasons 2016 (1437AH). This study concluded that the concentration of respirable particles (PM 10 ) and its water-soluble ions were much higher at site 2, site 1 than that at sites 3, 4 and 5.…”

Section: Resultsmentioning

confidence: 99%

“…The concentrations recorded in this study were lower than the daily mean limitation of PM 10 (340) in Saudi Arabia (PME, 1422). Emissions from road traffics, human activities, construction activities, re-suspension of dust particles and poor ventilations were considered to be the main reasons for the high concentrations of particulate matter (PM 10 -and SO 4 2-observed in particulate (PM 10 ). This may be attributable to the interaction of SO 2 and NOx and sharing the same source of emissions (road traffic).…”

Section: Water Soluble Ions (Wsis)mentioning

confidence: 99%

“…4,9 In this study The main objective of this work was focus on PM and its bio-accumulations (microbial load) in Makkah during Hajj seasons 2016 (1437 AH), especially those with aerodynamic diameter up to 10µm (PM 10 ). PM 10 have attracted a vast number of research investigations 10,11 due to their importance for public health, visibility, vegetation and other environmental impacts. Many scientists have investigated the health impacts of PM and have reported that PM can cause various health impacts, including respiratory diseases, rhinosinusitis, cardio-vascular diseases, asthma, and chronic obstructive pulmonary diseases.…”

Section: Introductionmentioning

confidence: 99%

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PM10 and their Bio-Contamination in Makkah Saudi Arabia- Case Studys

Mohammed

Attala

Habeebullah

2017

IJBSBE

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Atmospheric Particulate Matter (PM) is considered one of the most important air pollutants in terms of its health impacts, environmental degradations and visibility. Particles size, their chemical composition and atmospheric level are important factors for determining their adverse health impacts. In this paper the main objective of this work was focus on PM 10 and its bio-accumulations (microbial load) in Makkah during Hajj seasons 2016 (1437AH). This study concluded that the concentration of respirable particles (PM 10 ) and its watersoluble ions were much higher at site 2, site 1 than that at sites 3, 4 and 5 around Haram in Makkah. In addition, Man is the main source of air microbial contamination surrounding Haram in Makkah. Fungi evidence of the lack of output from natural sources of pollution. Spotted Staphylococcus bacteria were at high rates in all sites and micro-organisms at the site 2. The source of microbial contamination in all sites was the same, while the source of fungi differs especially at the site 2. The natural resources were the most predominant at the site of 2 and 1, as compared to sites 3, 4 and 5.

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Size distribution of airborne particles controls outcome of epidemiological studies

Cited by 46 publications

References 22 publications

Source Apportionment of the Lung Dose of Ambient Submicrometre Particulate Matter

Source Apportionment of the Lung Dose of Ambient Submicrometre Particulate Matter

Comparison of three techniques for analysis of data from an Aerosol Time-of-Flight Mass Spectrometer

PM10 and their Bio-Contamination in Makkah Saudi Arabia- Case Studys

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