The Maintenance and Operation of Aerosol Aupersite in 20022002
「The Maintenance and Operation of Aerosol Aupersite in 20022002」於資料集「EPQSummary_EnvironmentalInformationSystem」由單位「行政院環境保護署」的陳先生所提供，聯繫電話是02-2311-7722#2386，最近更新時間為：2023-07-30 01:01:46。 欄位Project Title的內容是The Maintenance and Operation of Aerosol Aupersite in 2002 ， 欄位Project Subject的內容是With more and more understanding about environmental influence and
health effects induced by suspended particles, Taiwan EPA began to plan and build
“Taiwan Supersite” in August 2000. The objective of supersite was to continuously
monitor aerosol physical and chemical compositions to explore its properties in
depth.
In March 2002, Taiwan supersite was operated with full capacity at
Hsindrum sports park. The instruments installed in Taiwan supersite include PM2.5
TEOM mass monitor, PM2.5 carbon analyzer, PM2.5 nitrate and sulfate analyzers,
aerosol integrating nephelometer, aerosol aethalometer, optical aerosol spectrometer
(PMS), and scanning mobility particle sizer (SMPS) as well as manual collectors like
R＆P 2300, Andersen RAAS, and R＆P ACCU.
From March to September in 2002, the effective data-acquisition rates are
98% for PM10, 97% for PM2.5, 73% for PM2.5 carbon, 94% for PM2.5 nitrate, 90% for
PM2.5 sulfate, 83% for PM2.5 black carbon, 74% for aerosol light-scattering
coefficient, 61% for aerosol size distribution from PMS, and 69% for aerosol size
distribution from SMPS, respectively.
Based on the continuous monitoring data from supersite, the average
concentration of PM10 in yellow sand (YS) events was 90μg/m3, which is greater
than that of non-yellow-sand (NYS) periods. In contrast, the average concentration of
PM2.5 in YS events was lower than that of NYS periods. Moreover, the organic
carbon (OC), elemental carbon (EC), and sulfate concentrations in PM2.5 in YS
events were also greater than that during NYS periods. However, for all time periods
and events, the EC concentration is always lower than OC. Aerosol light-scattering
coefficients during NYS periods were also shown to be greater than that in YS
events.
Interestingly, from the record of wind speed (WS) and wind direction
(WD), we found an increase of WS and a change of WD from the northeast to the
north- northeast. The situation was turn around when the YS was passed. This during
of stay of YS was evidenced by the rise of coarse particles (PM10-PM2.5).
From collocated comparison at supersite, the trend of data variation is
agreed between manual collectors and automatic mass monitor. The deviations
between R＆P2300 manual collector and TEOM monitor were 1% for PM2.5
and –7% for PM10, respectively. For aerosol carbon monitoring, the manual and
automatic data were agreed qualitatively but was lower for automatic carbon analyzer.
The possible explanation for the deviation in OC can be attributed to the difference in
detection method, while the cause for the deviation in elemental carbon might be due
to the cut-size of collection impactor at 0.14μm in automatic analyzer. For the
collocated comparison finished in October, both aerosol sulfate and nitrate were in
consistent between manual collector and automatic analyzers qualitatively. However,
the results from manual collectors were greater in concentrations of sulfate and
nitrate. The deviation got even greater when the concentration getting higher. The
vaporized nitrate was found to increase with the deposited nitrate on filter; however,
this vaporized nitrate should include the gaseous nitric acid. ， 欄位Project Year的內容是2002 ， 欄位Organizer的內容是Department of Environmental Monitoring ＆amp; Information Management ， 欄位Executive Unit的內容是國立中央大學環境工程研究所 ， 欄位Reporting download URL的內容是https://epq.epa.gov.tw/ProjectDoc/FileDownload?fid=3790&proj_id=A000000302659&doc_kind=1 ， 欄位Publish Date的內容是20141031 。
Project Title
The Maintenance and Operation of Aerosol Aupersite in 2002
Project Subject
With more and more understanding about environmental influence and health effects induced by suspended particles, Taiwan EPA began to plan and build “Taiwan Supersite” in August 2000. The objective of supersite was to continuously monitor aerosol physical and chemical compositions to explore its properties in depth. In March 2002, Taiwan supersite was operated with full capacity at Hsindrum sports park. The instruments installed in Taiwan supersite include PM2.5 TEOM mass monitor, PM2.5 carbon analyzer, PM2.5 nitrate and sulfate analyzers, aerosol integrating nephelometer, aerosol aethalometer, optical aerosol spectrometer (PMS), and scanning mobility particle sizer (SMPS) as well as manual collectors like R＆P 2300, Andersen RAAS, and R＆P ACCU. From March to September in 2002, the effective data-acquisition rates are 98% for PM10, 97% for PM2.5, 73% for PM2.5 carbon, 94% for PM2.5 nitrate, 90% for PM2.5 sulfate, 83% for PM2.5 black carbon, 74% for aerosol light-scattering coefficient, 61% for aerosol size distribution from PMS, and 69% for aerosol size distribution from SMPS, respectively. Based on the continuous monitoring data from supersite, the average concentration of PM10 in yellow sand (YS) events was 90μg/m3, which is greater than that of non-yellow-sand (NYS) periods. In contrast, the average concentration of PM2.5 in YS events was lower than that of NYS periods. Moreover, the organic carbon (OC), elemental carbon (EC), and sulfate concentrations in PM2.5 in YS events were also greater than that during NYS periods. However, for all time periods and events, the EC concentration is always lower than OC. Aerosol light-scattering coefficients during NYS periods were also shown to be greater than that in YS events. Interestingly, from the record of wind speed (WS) and wind direction (WD), we found an increase of WS and a change of WD from the northeast to the north- northeast. The situation was turn around when the YS was passed. This during of stay of YS was evidenced by the rise of coarse particles (PM10-PM2.5). From collocated comparison at supersite, the trend of data variation is agreed between manual collectors and automatic mass monitor. The deviations between R＆P2300 manual collector and TEOM monitor were 1% for PM2.5 and –7% for PM10, respectively. For aerosol carbon monitoring, the manual and automatic data were agreed qualitatively but was lower for automatic carbon analyzer. The possible explanation for the deviation in OC can be attributed to the difference in detection method, while the cause for the deviation in elemental carbon might be due to the cut-size of collection impactor at 0.14μm in automatic analyzer. For the collocated comparison finished in October, both aerosol sulfate and nitrate were in consistent between manual collector and automatic analyzers qualitatively. However, the results from manual collectors were greater in concentrations of sulfate and nitrate. The deviation got even greater when the concentration getting higher. The vaporized nitrate was found to increase with the deposited nitrate on filter; however, this vaporized nitrate should include the gaseous nitric acid.
Project Year
2002
Organizer
Department of Environmental Monitoring ＆amp; Information Management
Executive Unit
國立中央大學環境工程研究所
Reporting download URL
https://epq.epa.gov.tw/ProjectDoc/FileDownload?fid=3790&proj_id=A000000302659&doc_kind=1
Publish Date
20141031
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