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TÜV Rheinland Energie und Umwelt GmbH
Luftreinhaltung
Page 150 of 422
Report on the suitability test of the ambient air quality measuring system
TEOM 1405-F Ambient Particulate Monitor with PM10 pre-separator of the
company Thermo Fisher Scientific for the component PM10,
Report-No.: 936/21209885/B
[Point 9.5.3] The combined uncertainty of the candidates wc,CM is calculated for each data set
by combining the contributions from 9.5.2.1 and 9.5.2.2 according to the following equation:
w c2,CM ( y i ) =
2
u CR
(y i )
y i2
For each dataset, the uncertainty wc,CM is calculated at the level of yi = 50 µg/m³ for PM10.
[Point 9.5.4] The expanded relative uncertainty of the results of the candidates is calculated
for each data set by multiplication of wc,CM with a coverage factor k according to the following
equation:
WCM = k ⋅ w CM
In practice: k=2 for large n
[Point 9.6] The highest resulting uncertainty WCM is compared and assessed with the requirements on data quality of ambient air measurements according to EU Standard [7].
Two results are possible:
1. WCM ≤ Wdqo → Candidate method is accepted as equivalent to the standard method.
2. WCM > Wdqo → Candidate method is not accepted as equivalent to the standard method.
The specified expanded relative uncertainty Wdqo for particulate matter is 25 % [7].
6.5
Assessment
The determined uncertainties WCM without application of correction factors lay for all observed data sets beneath the defined expanded relative uncertainty Wdqo of 25 % for particulate.
Minimum requirement fulfilled? yes
The following Table 31 shows an overview of the results of the equivalence check for the
candidate TEOM 1405-F Ambient Particulate Monitor for PM10. For the case, that a criterion
is fulfilled or not, the text is represented in green or red colour. Furthermore the five criteria
from chapter 6.1 Methodology of the equivalence check are taken into account, the related
cells are highlighted in colour.
740300_2011_936_21209885B_eng.doc