ISO 11665-4:2012
Measurement of radioactivity in the environment — Air: radon-222 — Part 4: Integrated measurement method for determining average activity concentration using passive sampling and delayed analysis
ISO 11665-4:2012 describes radon-222 integrated measurement techniques with passive sampling. It gives indications for determining the average activity concentration of the radon-222 in the air from measurements based on easy-to-use and low-cost passive sampling, and the conditions of use for the sensors.
ISO 11665-4:2012 covers samples taken without interruption over periods varying from a few days to one year.
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CVP_Secretariat_Loca
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Principle
5 Equipment
6 Sampling
6.1 Sampling objective
6.2 Sampling characteristics
6.3 Sampling conditions
7 Detection
8 Measurement
8.1 Procedure
8.2 Influence quantities
8.3 Calibration
9 Expression of results
9.1 Average radon activity concentration
9.2 Standard uncertainty
9.3 Decision threshold and detection limit
9.4 Limits of the confidence interval
10 Test report
Annex A (normative) Measurement method using a solid-state nuclear track detector (SSNTD)
Annex B (normative) Measurement method using an electret detector
Annex C (normative) Measurement method using activated charcoal
Bibliography
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CVP_Secretariat_Loca
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Principle
5 Equipment
6 Sampling
6.1 Sampling objective
6.2 Sampling characteristics
6.3 Sampling conditions
7 Detection
8 Measurement
8.1 Procedure
8.2 Influence quantities
8.3 Calibration
9 Expression of results
9.1 Average radon activity concentration
9.2 Standard uncertainty
9.3 Decision threshold and detection limit
9.4 Limits of the confidence interval
10 Test report
Annex A (normative) Measurement method using a solid-state nuclear track detector (SSNTD)
Annex B (normative) Measurement method using an electret detector
Annex C (normative) Measurement method using activated charcoal
Bibliography