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Improving urban air quality measurements by a diffusion charger based electrical particle sensors: A field study in Beijing, China

Tutkimustuotosvertaisarvioitu

Standard

Improving urban air quality measurements by a diffusion charger based electrical particle sensors : A field study in Beijing, China. / Dal Maso, Miikka; Gao, Jian; Järvinen, Anssi; Li, Hui; Luo, Datong; Janka, Kauko; Rönkkö, Topi.

julkaisussa: Aerosol and Air Quality Research, Vuosikerta 16, Nro 12, 01.12.2016, s. 3001-3011.

Tutkimustuotosvertaisarvioitu

Harvard

Dal Maso, M, Gao, J, Järvinen, A, Li, H, Luo, D, Janka, K & Rönkkö, T 2016, 'Improving urban air quality measurements by a diffusion charger based electrical particle sensors: A field study in Beijing, China', Aerosol and Air Quality Research, Vuosikerta. 16, Nro 12, Sivut 3001-3011.

APA

Vancouver

Dal Maso M, Gao J, Järvinen A, Li H, Luo D, Janka K et al. Improving urban air quality measurements by a diffusion charger based electrical particle sensors: A field study in Beijing, China. Aerosol and Air Quality Research. 2016 joulu 1;16(12):3001-3011.

Author

Dal Maso, Miikka ; Gao, Jian ; Järvinen, Anssi ; Li, Hui ; Luo, Datong ; Janka, Kauko ; Rönkkö, Topi. / Improving urban air quality measurements by a diffusion charger based electrical particle sensors : A field study in Beijing, China. Julkaisussa: Aerosol and Air Quality Research. 2016 ; Vuosikerta 16, Nro 12. Sivut 3001-3011.

Bibtex - Lataa

@article{0ecb4549108741f5be07d9bc649a3378,
title = "Improving urban air quality measurements by a diffusion charger based electrical particle sensors: A field study in Beijing, China",
abstract = "High aerosol loadings contribute significantly to the air quality problems of Asian megacities. To address this, monitoring data for aerosol mass and number that is spatially and temoprally of high resolution is needed, while the cost of obtaining such data remains high. Here, we present a field study in a polluted megacity, Beijing, using a diffusion-chargebased electrical aerosol sensor, the Pegasor PPS-M, which is a robust and comparatively low-cost instrument for the monitoring of both aerosol mass and number simultaneously. We present data over several months in the year 2014, and for varying aerosol size distributions, and analyze the performance against particle number and mass (volume) measured using a wide range particle sizer (WPS) and beta-attenuation-based PM2.5 observations. We show that using a single trap voltage, the PPS-M correlates well with particle mass, but not so well with particle number due to the variability in particle size distributions. However, the instrument response to number was improved by running the instrument with a variable trap voltage, and using the ratio of the different signals to gain information on the particle average volume. With this method, we were able to improve the correlation of the PPS-M; with the observed particle number from R = 0.14 to R = 0.72 for the measurement time period. Altogether, the PPS-M instrument displayed robustness and low maintenance requirements, and it showed good correlation with the other instruments in this study.",
keywords = "Aerosol instrumentation, China air quality, Diffusion charging, Urban aerosol",
author = "{Dal Maso}, Miikka and Jian Gao and Anssi J{\"a}rvinen and Hui Li and Datong Luo and Kauko Janka and Topi R{\"o}nkk{\"o}",
year = "2016",
month = "12",
day = "1",
language = "English",
volume = "16",
pages = "3001--3011",
journal = "Aerosol and Air Quality Research",
issn = "1680-8584",
publisher = "TAIWAN ASSOC AEROSOL RES-TAAR",
number = "12",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Improving urban air quality measurements by a diffusion charger based electrical particle sensors

T2 - A field study in Beijing, China

AU - Dal Maso, Miikka

AU - Gao, Jian

AU - Järvinen, Anssi

AU - Li, Hui

AU - Luo, Datong

AU - Janka, Kauko

AU - Rönkkö, Topi

PY - 2016/12/1

Y1 - 2016/12/1

N2 - High aerosol loadings contribute significantly to the air quality problems of Asian megacities. To address this, monitoring data for aerosol mass and number that is spatially and temoprally of high resolution is needed, while the cost of obtaining such data remains high. Here, we present a field study in a polluted megacity, Beijing, using a diffusion-chargebased electrical aerosol sensor, the Pegasor PPS-M, which is a robust and comparatively low-cost instrument for the monitoring of both aerosol mass and number simultaneously. We present data over several months in the year 2014, and for varying aerosol size distributions, and analyze the performance against particle number and mass (volume) measured using a wide range particle sizer (WPS) and beta-attenuation-based PM2.5 observations. We show that using a single trap voltage, the PPS-M correlates well with particle mass, but not so well with particle number due to the variability in particle size distributions. However, the instrument response to number was improved by running the instrument with a variable trap voltage, and using the ratio of the different signals to gain information on the particle average volume. With this method, we were able to improve the correlation of the PPS-M; with the observed particle number from R = 0.14 to R = 0.72 for the measurement time period. Altogether, the PPS-M instrument displayed robustness and low maintenance requirements, and it showed good correlation with the other instruments in this study.

AB - High aerosol loadings contribute significantly to the air quality problems of Asian megacities. To address this, monitoring data for aerosol mass and number that is spatially and temoprally of high resolution is needed, while the cost of obtaining such data remains high. Here, we present a field study in a polluted megacity, Beijing, using a diffusion-chargebased electrical aerosol sensor, the Pegasor PPS-M, which is a robust and comparatively low-cost instrument for the monitoring of both aerosol mass and number simultaneously. We present data over several months in the year 2014, and for varying aerosol size distributions, and analyze the performance against particle number and mass (volume) measured using a wide range particle sizer (WPS) and beta-attenuation-based PM2.5 observations. We show that using a single trap voltage, the PPS-M correlates well with particle mass, but not so well with particle number due to the variability in particle size distributions. However, the instrument response to number was improved by running the instrument with a variable trap voltage, and using the ratio of the different signals to gain information on the particle average volume. With this method, we were able to improve the correlation of the PPS-M; with the observed particle number from R = 0.14 to R = 0.72 for the measurement time period. Altogether, the PPS-M instrument displayed robustness and low maintenance requirements, and it showed good correlation with the other instruments in this study.

KW - Aerosol instrumentation

KW - China air quality

KW - Diffusion charging

KW - Urban aerosol

M3 - Article

VL - 16

SP - 3001

EP - 3011

JO - Aerosol and Air Quality Research

JF - Aerosol and Air Quality Research

SN - 1680-8584

IS - 12

ER -