Elzakker BG van ; Meulen A van der ; Hellemond J
van ; Regts TA
78 p
in Dutch
1992
Toon Nederlands
English Abstract An automated dust measuring method is needed for
implementation in the National Air Quality Network. The beta-attenuation
method is described and the results of an extensive investigation of 5
Beta-dust monitors of different makes are reported. The Beta-dust monitors
were tested in the laboratory to quantify lower detection limit and
sensitivity to temperature, relative humidity and SO2 concentrations. In a
field test, the relationship radiometry - gravimetry was investigated. The
conclusion can be drawn that the FAG FH 62 I-N fulfils the required
performance characteristics. The 1-hour average concentration can be
determined with a standard deviation of 10 mug/m3. The 24-hour average
concentration has a standard deviation of 2 mug/m3. For the FAG-instrument,
no significant sensitivity to temperature, relative humidity and SO2
concentrations could be determined. The radiometric measurement corresponds
to the gravimetric measurement within 10% for the location Bilthoven. It is
recommended to check this relationship after implementation in the Network
for every measuring site by setting up a quality assurance
programme.
