Field test of the aerosol
particle combined analyzer- A new PM2.5 analyzer-February 4, 2015

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

1About Fuji Electric
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In automobiles

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showcases

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2

Fuji Electric’s sensors
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business.
and transportation.

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environmental monitors

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Aerosol analysis

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3

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）

Changing albedo
of cloudSunlight

Cloud droplets
growingCooling

Cloud droplets
generation

SulfateOrganics

Blackcarbon
Upflow

HeatingAerosols

Cooling©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
Loading aerosol particles
Tandem nozzle
IR Laser

Incandescenceanalyzer■PM2.5 monitor
Mass concentration monitoring only,
Composition analysis is impossible.

Introduce particles into IR Laser cavity
Detecting particle
diameter with scattering
Detecting black carbon
with incandescence

Aerodynamic lens
Producing particle beamwith aerodynamic lensAnalyzingcell

Mass spectrometric analyzer■PM2.5 manual analysis
8-12 hours per analysis
Real-time measurement isimpossible.

1700mmTandem nozzle

Particle collection on the particle trap
and vaporizing CO2 Laser

Particle trap
(MEMS)
Analyzing particle chemicalcompositions with QMS

800mm

Turbo molecularpumps

Quadrupole mass
spectrometer (QMS)

600mm
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 for
Marine-Earth Science and Technology and Fuji Electric Co., Ltd.
© Fuji Electric Co., Ltd. All rights reserved.

5

Field test at Kawasaki city
Joint study between Kawasaki city and Fuji Electric (since 2013)
Kawasaki city

Fuji Electric

Takatsu general station
Aerosol combinedanalyzer (prototype)

30OtherOC

質量濃度 [u g/m3]

25NH4NO3SO420

BC
15

105

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

0
20日
21:09

21日
9:09

21日
21:09

22日
9:09

22日
21:09

23日
9:09

23日
21:09

24日
9:09

24日
21:09

25日
9:09

25日
21:09

26日
9:09

時刻

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.

6

Example – Field test at Kawasaki general stationParticle size
distribution
9/16 1：00（Under the typhoon）

Accumulated
mass累積質量[a.u.]

10080
60402000.180.20 0.230.270.31 0.350.410.470.540.61 0.710.810.93 1.061.221.401.611.85 2.13[μm]
Particle 粒径
diameter[μm]

9/23 1：00（Fair weather）

Accumulated
mass[a.u.]
累積質量

100

60
40
20
00.18 0.20 0.23 0.27 0.31 0.35 0.41 0.470.540.610.71 0.81 0.93 1.06 1.22 1.40 1.61 1.85 2.13
粒径 [μm] [μm]Particle diameter

4033]
Mass concentration
Mass [ug/m [μg/m]

80The prototype of aerosol particle combined
analyzer in the Takatsu general station
SulfateSulfateNitrateNitrateBlackBC carbon
SCA
PM2.5

9/23 1：00
30（Fair weather）

9/16 1：00
20（Under the typhoon）

100
2013/09/15

2013/09/17

2013/09/19

2013/09/21
Date & Time2013/09/23

2013/09/25

2013/09/27© Fuji Electric Co., Ltd. All rights reserved.

7

Intercomparison
高津PM2.5

Air quality standard (35μg/m3)

35

複合分析計PM2.5

PM2.5 monitor

30

Aerosol particle combined analyzer

25
20
15
1050
9/13

9/15

9/17

9/19

9/21
日付と時刻

9/23

9/259/27Date & Time2533] ]The
new PM2.5 analyzer[μg/m複合分析計PM2.5測定値[μg/mMassconcentration [μg/m3]
PM2.5 質量濃度 [μg/m3]

40+20%

20

Intercomparison between results of PM2.5 monitor and15

results of aerosol particle combined analyzer (daily data).

-20%
10Trends show good correlation(approximately±20%)50051015203
高津PM2.5自動測定機測定値[μg/mTakatsu PM2.5 monitor [μg/m3] ]25© Fuji Electric Co., Ltd. All rights reserved.

8

Data analysis1－Nitrate vs NOx• There is a correlation between nitrate and NOx gas.
• NOx gas rapidly changes into nitrate.
NOx [ppm]
NOx [ppm]
硝酸塩 [ug/m3]
Nitrate80.8

Nitrate

60.6

40.4

20.2

00.0

2013/09/13

2013/09/15

2013/09/17

2013/09/19

2013/09/21

Date & Time2013/09/23

2013/09/25

2013/09/27

30

10080
60

2040
10

Temperature

20

Humidity00
2013/09/13

2013/09/15

2013/09/17

2013/09/19

2013/09/21

2013/09/23

2013/09/25

Humidity[%]
湿度[％]
Humidioty
湿度 [%]

Temperture
Temperature[℃]
温度 [℃]-11.0x10[ppm]NOxｶﾞｽ濃度[ppm]OxNOx, NOx [ppm]3
Mass 質量濃度
concentration
M Nitrate [ug/m ][μg/m3]

10

The origin of nitrate could bearound here.

2013/09/27

Date & Time© Fuji Electric Co., Ltd. All rights reserved.

9

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.

The origin of nitrate could be
automobiles around here.

Measurement results of black carbon

3
M Nitrate [ug/m ] [μg/m3]
Mass質量濃度
concentration• There is a correlation between nitrate and blackcarbon.
Nitrate [ug/m3]
Mass_BC

4

NitrateBlack carbon

32

10
2013/09/13

2013/09/15

2013/09/17

2013/09/19

2013/09/21

2013/09/23

2013/09/25

2013/09/27

Date & Time

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

10

Joint study 2014
Long term field measurement (more than 3 months)••

Studying PM2.5 component dynamics
Peculiar case analysis, macro trend …
Developing the analyzer for commercialization
Improving reliability, maintenance methods …
Measurement image

Kawasaki city & FE Joint analysis

Peculiar case
PM2.5
PM2.5
硫酸塩
Sulfate
硝酸塩
NitrateBlackCarbon
ﾌﾞﾗｯｸｶｰﾎﾞﾝ

Manual Analysis

Manual Analysis

Verification of long term stability

We will contribute to reduce PM2.5.
© Fuji Electric Co., Ltd. All rights reserved.

11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.