Field test of the aerosol
particle combined analyzer- A new PM2.5 analyzer-

February 13, 2014

Fuji Electric Co., Ltd.
© Fuji Electric Co., Ltd. All rights reserved.

1About Fuji Electric
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In power stations
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In automobiles

In railways

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In factories
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In shops

In office buildings

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showcases

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Fuji Electric’s sensors
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About PM2.5●PM2.5 has various origins, sizes and chemical compositions（Fig.1, Fig.2）.
●There are growing concerns about health effects (Fig.3) and meteorological effects (Fig.4).
●Reducing PM2.5 requests more detailed information (sizes, origins...).
■PM2.5 generation mechanism（Fig.1）■Aerosol Particle Size distribution（Fig.2）■Health effect （Fig.3）■Meteorological effect（Fig.4）

Nasal cavity
Pharynx＞10μm

LarynxTrachea
Bronchus＜10μm（SPM）

LungAlveolus＜2.5μm（PM2.5）©Kondo Lab. The University of Tokyo© Fuji Electric Co., Ltd. All rights reserved.

4Aerosol particle combined analyzer
Hourly mass concentration
monitoring only

Particle size, number and composition real-time (every 15min) analysis.
Possible applications : Inferring PM2.5 origins, improving PM2.5 forecast

Existing method

Fuji Electric’s aerosol particle combined analyzer■PM2.5 monitor
Mass concentration monitoring only,
Composition analysis is impossible.

■Prototype■PM2.5 manual analysis
8-12 hours per analysis
Real-time measurement isimpossible.

1500mm

1500500mm

700mm
This research was supported by Japan Science and Technology agency (2008～2012).
The member of the joint research are The University of Tokyo, Japan Agency forMarine-Earth Science and Technology and Fuji Electric Co., Ltd.
© Fuji Electric Co., Ltd. All rights reserved.

5

Field test at Kawasaki
Joint study between Kawasaki city and Fuji ElectricKawasaki cityFuji Electric

Takatsu general station
Prototype

Manual analysis
PM2.5 monitoring【Resources】• PM2.5 monitoring data
• PM2.5 manual analysis data
• Weather data
• Air pollutant data

Field observation【Resources】• PM2.5 mass concentration data
• PM2.5 real-time analysis data
(particle chemical composition, size
and number)© Fuji Electric Co., Ltd. All rights reserved.

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Particle size
distribution
9/16 1：00（Under the typhoon）

Accumulated
mass [a.u.]

Example – Field test at Kawasaki general station

9/23 1：00（Fair weather）

Accumulated
mass [a.u.]

Particle diameter [μm]The prototype of aerosol particle combined
analyzer in the Takatsu general station

Mass concentration [μg/m3]

Particle diameter [μm]9/23 1：00
9/16 1：00（Fair weather）

SulfateNitrateBlack carbon
PM2.5（Under the typhoon）© Fuji Electric Co., Ltd. All rights reserved.

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Intercomparison
Mass concentration [μg/m3]

Air quality standard (35μg/m3)
PM2.5 monitor
Aerosol particle combined analyzer

The new PM2.5 analyzer [μg/m3]

Date & Time
+20%

Intercomparison between results of PM2.5 monitor and-20%

results of aerosol particle combined analyzer (daily data).

Trends show good correlation(approximately±20%)
Takatsu PM2.5 monitor [μg/m3]© Fuji Electric Co., Ltd. All rights reserved.

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Data analysis1－Nitrate vs NOx• There is a correlation between nitrate and NOx gas.

NitrateTemperature

Humidity[%]
湿度[％]
湿度

Temperature
温度 [℃]NOx [ppm]
硝酸塩

NOx [ppm]
NOxｶﾞｽ濃度[ppm]

Mass 質量濃度
concentration [μg/m3]• NOx gas rapidly changes into nitrate.

The origin of nitrate could bearound here.

Humidity© Fuji Electric Co., Ltd. All rights reserved.

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Data analysis2－Nitrate vs black carbon
Measurement results of nitrate• There is a correlation between nitrate and NOx gas.
• NOx gas rapidly changes into nitrate.
Measurement results of black carbon

The origin of nitrate andblack carbon could be
automobiles around here.

Mass質量濃度
concentration [μg/m3]• There is a correlation between nitrate and blackcarbon.
NitrateBlack carbon

Aerosol particle combined analyzer can provide PM2.5 origin information.
© Fuji Electric Co., Ltd. All rights reserved.

10空気の、テイスティング。

それぞれどんな成分がふくまれているのか、空気中のPM2.5の特性をリアルタイム分析。微小粒子の生まれた場所と原因の特定に、道を拓きます。

© Fuji Electric Co., Ltd. All rights reserved.

Data analysis3－Sulfate vs SO2・There is no correlation between SO2 andsulfate.
・Sulfate is stable and easily transported longdistance.

SulfateThere is no correlation
between SO2 andsulfate.

硫酸塩SO2 [ppm]

Mass concentration [μg/m3]

SO2[ppm]

The origin of sulfate
could be far from here.

Sulfate data implied wide area air pollution.
© Fuji Electric Co., Ltd. All rights reserved.

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