Buijsman E ,
Straalen D van ,
Swaan P ,
Vos PW de ,
Boelhouwer HC
60 p
in Dutch
1991
Toon Nederlands
English Abstract In this report the results of an evaluation of the
technical performance of the Dutch National Air Quality Monitoring Network
in 1990 are presented. The average brute component efficiences, i.e. a
measure for the availability of measuring data, are: - for the automatically
measured components [CO, NOx, O3, SO2] 97% ; - for the meteorological
parameters [global radiation, temperature, wind direction, wind speed] 96% ;
- for aerosols etc. [black smoke, acidifying compounds, metals, tsp.] 97%
; - for the chemical composition of precipitation [i.a. acidifying
compounds, heavy metals] 95%. Current Dutch legislation requires the
measurement of a number of components in such way that only a minimal loss
of data is tolerated. The number of stations which did not meet the legal
requirements in 1990 are: 3 for CO [12% of the total number of stations], 2
for NO2 [5%], 11 for SO2 [13%], O for lead aerosol and 6 for black smoke
[30%]. In general, considerable improvement has been achieved in comparison
to 1989. Nevertheless, for certain activities [black smoke and chemical
composition of precipitation logistical procedures have to be redefined to
improve efficiency and/or quality of the measurements.
