Name: Gabriel Dulac-Arnold
Name: Jan Theunis
Name: Hester Volten
Company: Labocitoyen
Function: Project Manager
Company: RIVM - National Institute of Public Health
Current Job: PhD student at LIP6, part of UniversitĂŠ
Company: Environmental Risk and Health
Pierre et Marie Curie
Worked on: The Aeroflex: a bike for mobile air qual-
Website: http://gabe.squirrelsoup.net/
ity measurements
Worked on Gasser: an raspberry pi powered device
Explained me: Sensor technologies are still in de-
that could measure the air quality mobile. http://
velopment, don’t expect too much of it. If you want
wiki.labocitoyen.fr/index.php?n=Hardware.Gasser
to sense gas like NO2 you need to measure nano-
and the Environment, Department: Environment and Safety Division, Centre for Environmental Monitoring Currently working on: ISPEX initiative, a method to measure the fine dust with a special device on the Iphone.
voltages which is extremely hard to do. These sen-
Explained me: how air is measured in the Nether-
sors are sensitive for temperature, humidity and
lands, and what the future of RIVM needs to be.
Explained me: The sensors are from alphasense and
most of the time also for other gasses. If you want
More and more they have to compete with people
provide two voltages, in the range of 220-400mV
to measure really precise you will need to pay a lot.
who measure themselves, which is of course a good
iirc. You need to be able to get a resolution of about
The cheap versions are all different and need to be
thing but their measured values are not always cor-
4-5mV to be able to get concentration resolutions in
calibrated individually.
rect. Before something is brought to the public via
Has experience with: Alphasense B4 serie sensors
the 10ppb range, which is the minimum necessary
RIVM it is first checked several times. Their sen-
to be able to do anything 'useful'.
sors are in the highest precision and controlled and monitored in Bilthoven. For a future initiative like I have a cooperation is needed to check the validity of the measurements, and to combine and analyze all the data.
40