Radon activity concentration--a Euromet and BIPM supplementary comparison.
For the first time, a comparison of radon activity concentration in air has been performed within the scope of Euromet. In the project 657, 'Comparison of calibration facilities for the radon activity concentration,' 12 participants from 9 countries compared different radon reference atmospheres at 1, 3 and 10 k Bq m-3 via a transfer standard. The comparison was listed as BIPM supplementary comparison EUROMET.RI(II)-S1. The results of most participants are correlated due to common traceability to one single radon gas standard producer. This makes a careful correlation analysis necessary to achieve an appropriate comparison reference value. The results of the comparison as well as the complex analysis of the correlated set of data is presented and discussed.
Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany. Annette.roettger@ptb.de
A
A
Röttger
A
A
Honig
V
V
Schmidt
H
H
Buchröder
A
A
Rox
G
G
Butterweck
Ch
Ch
Schuler
F J
FJ
Maringer
P
P
Jachs
R
R
Edelmaier
N
N
Michielsen
C B
CB
Howarth
J C H
JC
Miles
A
A
Vargas
X
X
Ortega
I
I
Burian
T
T
Turtiainen
N
N
Hagberg
D000396:Air Pollutants, Radioactive / Q000032:analysis* / Q000592:standards*; D002138:Calibration / Q000592:standards; D005060:Europe; D017408:Guidelines as Topic; D007391:International Cooperation; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods* / Q000592:standards*; D011886:Radon / Q000032:analysis* / Q000592:standards*; D012015:Reference Standards; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D000396:Air Pollutants, Radioactive; D011886:Radon