CLEEN's MMEA program organised an international seminar on cleaner air - Outdoor and indoor air quality together with Zhejiang University and assistant organizer Insigma group. This is one of the presentations in the seminar. More info in www.mmea.fi The cleantech field is expanding rapidly and Finnish companies are committed to working for a better environment in the fields of energy efficiency, air quality and monitoring. The world-class Cleantech know-how from Finland and the cooperation with Chinese partners and the results were highlighted in the MMEA seminar. Some of the leading Finnish cleantech companies together with Finnish and Chinese research institutions were present at the event. The seminars focused on cooperation between Finland and China concerning indoor and outdoor air quality and solutions to make them better.

1. Why
ultrafines?
Dr
Lei
Dong
Presented
by
Mr
Markku
Rajala
A Company

3. >1
billion
people
suffer
from
poor
air
quality
every
day
每天有超过10亿人不得不生活在恶劣空气的环境中

8. With
same
parDcle
mass
you
may
get
very
different
number
and
surface
area
of
parDcles
into
your
lungs
即使吸入肺部的颗粒物的质量一样，但是颗粒物的
数量及表面积可能完全不一样

9. Different
size
parDcle
affect
your
lungs
differently
不用大小的颗粒物对肺部有不同的影响

10. OpDcal
sensors
do
not
measure
<300
nm
parDcles
–
and
β-­‐sensors
are
insensiDve
to
small
parDcles
传统光学传感器监测不到小于300纳米的颗粒物
β- 射线法传感器对细微颗粒反应不灵敏
0
2000
4000
6000
8000
10000
12000
14000
16000
1 10 100 1000 10000
Number
concentration
(1/cm3)
Particle
diamer
(nm)
Particle
number
concentration
Beijing
Measurement
range of optical
particle sensors

11. Electrical
sensors
based
on
parDcle
charging
measure
all
parDcles
in
10
nm
–
2.5
µm
range
基于对颗粒物充电方法监测的电子传感器，可监测
10纳米-­‐2.5微米的所有颗粒物
0
2000
4000
6000
8000
10000
12000
14000
16000
1 10 100 1000 10000
Number
concentration
(1/cm3)
Particle
diamer
(nm)
Particle
number
concentration
Beijing
Measurement range of sensors based on
electrical particle charging

13. Pegasor
Urban
Air
Monitoring
Equipment
佩卡索尔室外空气监测设备

18. Charger
power
Electrometer
In = Iout - Iin
Iin
Iout
Sample in
Sample out
Isolated power transfer
Faraday cup
Aerosol
charging
In
Pegasor’s
technology
佩卡索尔公司技术

19. Future
–
direct
measurement
of
health
impact?
将来-­‐
直接测量对人体健康影响？

20. Conclusions
总结
• PM2.5
is
a
good
indica/on
of
pollu/on
but
it
underes/mates
the
health
effect
caused
by
ultrafine
par/cles
PM2.5
是空气污染的重要指数，但是仅有PM2.5
的概念，低估了极细微颗粒
物对人体健康的影响
• Par/cle
number
(PN)
and
par/cle
surface
area
(PA)
concentra/ons
are
important
for
beAer
understanding
of
pollu/on
vs
health
effect
颗粒物数量浓度（PN）及颗粒物表面积浓度（PA）可以更好的理解污染及健
康影响
• Measuring
PN/PA1
(and
especially
PN/PA0.1)
requires
new
measurement
technology
based
on
electrical
charging
of
par/cles
测量PN/PA1
(尤其是PN/PA0.1)需要基于对颗粒物充电的电子技术
• It
may
be
possible
to
develop
measurement
equipment
which
can
indicate
the
poten/al
health
effect
of
par/culate
maAer
可以直接反应颗粒物对健康的潜在影响，开发监测设备成为可能

21. Thank
You!
Pegasor
Oy
Hatanpään
valta/e
34
C,
FI-­‐33100
Tampere,
Finland
markku.rajala@pegasor.fi;
+86
136
6127
1971
www.
pegasor.fi