1、Designation:D632710(Reapproved 2021)Standard Test Method forDetermination of Radon Decay Product Concentration andWorking Level in Indoor Atmospheres by Active Samplingon a Filter1This standard is issued under the fixed designation D6327;the number immediately following the designation indicates the
2、 year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method provides instruction for using the grabsa
3、mpling filter technique to determine accurate and reproduc-ible measurements of indoor radon decay product(RDP)concentrations and of the working level(WL)value corre-sponding to those concentrations.1.2 Measurements made in accordance with this test methodwill produce RDP concentrations representati
4、ve of closed-building conditions.Results of measurements made underclosed-building conditions will have a smaller variability andare more reproducible than measurements obtained whenbuilding conditions are not controlled.This test method may beutilized under non-controlled conditions,but a greater d
5、egreeof variability in the results will occur.Variability in the resultsmay also be an indication of temporal variability present at thesampling site.1.3 This test method utilizes a short sampling period and theresults are indicative of the conditions only at the place andtime of sampling.The result
6、s obtained by this test method arenot necessarily indicative of longer terms of sampling andshould not be confused with such results.The averaging ofmultiple measurements over hours and days can,however,provide useful screening information.Individual measure-ments are generally obtained for diagnost
7、ic purposes.1.4 The range of the test method may be considered from0.0005 WL to unlimited working levels,and from 40 Bq/m3tounlimited for each individual radon decay product.1.5 This test method provides information on equipment,procedures,and quality control.It provides for measurementswithin typic
8、al residential or building environments and maynot necessarily apply to specialized circumstances,forexample,clean rooms.1.6 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.7 This standard does not purport to address all of the
9、safety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.See Section 9 for additional precautions1.8 This internation
10、al standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.
11、2.Referenced Documents2.1 ASTM Standards:2D1356 Terminology Relating to Sampling and Analysis ofAtmospheresD1605 Practices for Sampling Atmospheres for Analysis ofGases and Vapors(Withdrawn 1992)3D3631 Test Methods for Measuring Surface AtmosphericPressureE1 Specification for ASTM Liquid-in-Glass Th
12、ermometers3.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Terminology D1356.3.2 Definitions of Terms Specific to This Standard:3.2.1 grab sampling,nthe act and all procedures involvedwith obtaining a short term sample through the use of anoperating air pump.3.2.
13、2 radon,nthe particular isotope radon-222.1This test method is under the jurisdiction of ASTM Committee D22 on AirQuality and is the direct responsibility of Subcommittee D22.05 on Indoor Air.Current edition approved Sept.1,2021.Published September 2021.Originallyapproved in 1998.Last previous editi
14、on approved in 2016 as D6327 10(2016).DOI:10.1520/D6327-10R21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The
15、 last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardiz
16、ation established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.13.2.3 radon decay products(RDP),nany or all of theparticular isotopes polonium-218,bismuth-214,lead-214,andpolonium-214.3.2.4 working level,nquantity of short-lived decay prod-ucts that will result in 1.3 106MeV of potential alpha energyper litre of air.The working level is the common unit forexp