1、Designation:D739007(Reapproved 2012)Standard Guide forEvaluating Asbestos in Dust on Surfaces by ComparisonBetween Two Environments1This standard is issued under the fixed designation D7390;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revi
2、sion,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 There are multiple purposes for determining the loadingof asbestos in dust on surfaces.Each particular pur
3、pose mayrequire unique sampling strategies,analytical methods,andprocedures for data interpretation.Procedures are provided tofacilitate application of available methods for determiningasbestos surface loadings and/or asbestos loadings in surfacedust for comparison between two environments.At presen
4、t,this guide addresses one application of the ASTM surface dustmethods.It is anticipated that additional areas will be added inthe future.It is not intended that the discussion of oneapplication should limit use of the methods in other areas.1.2 This standard does not purport to address all of thesa
5、fety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For specificwarning statements,see 5.7.2.Referenced Documents2.1 ASTM Standa
6、rds:2D5755 Test Method for Microvacuum Sampling and IndirectAnalysis of Dust by Transmission Electron Microscopyfor Asbestos Structure Number Surface LoadingD5756 Test Method for Microvacuum Sampling and IndirectAnalysis of Dust by Transmission Electron Microscopyfor Asbestos Mass Surface LoadingD64
7、80 Test Method for Wipe Sampling of Surfaces,IndirectPreparation,and Analysis for Asbestos Structure NumberSurface Loading by Transmission Electron MicroscopyD6620 Practice for Asbestos Detection Limit Based onCountsE105 Practice for Probability Sampling of MaterialsE122 Practice for Calculating Sam
8、ple Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aLot or ProcessE456 Terminology Relating to Quality and StatisticsE2356 Practice for Comprehensive Building Asbestos Sur-veys2.2 Other Document:Environmental Protection Agency,U.S.(EPA),(PinkBook)Asbestos in Buildings:S
9、implified SamplingScheme for Surfacing Materials,EPA 560/5/85/030A,U.S.Environmental Protection Agency,Washington,DC,198533.Terminology3.1 DefinitionsUnless otherwise noted all statistical termsare as defined in Terminology E456.3.1.1 activity generated aerosola dispersion of particles inair that ha
10、ve become airborne due to physical disturbancessuch as human activity,sweeping,airflow,etc.3.1.2 background samplessamples taken from surfacesthat are considered to have concentrations of asbestos insurface dust that are representative of conditions that exist in anenvironment that is affected by on
11、ly prevailing conditions andhas not experienced events,disturbances or activities unusualfor the environment.3.1.3 controlan area that is used as the basis for acomparison.This could be an area where the dust has beenpreviously characterized,an area thought to be suitable foroccupancy,an area that h
12、as not experienced a disturbance ofasbestos-containing materials,or that is for some other reasondeemed to be suitable as the basis for a comparison.3.1.4 control samplessamples collected for comparison tothe study samples.These differ from background samples inthat they are collected:either:in an a
13、rea where the dust hasbeen previously characterized,or in an area that has notexperienced a disturbance of asbestos-containing materials,or1This guide is under the jurisdiction of ASTM Committee D22 on Air Qualityand is the direct responsibility of Subcommittee D22.07 on Sampling and Analysisof Asbe
14、stos.Current edition approved Oct.1,2012.Published November 2012.Originallyapproved in 2007.Last previous edition approved in 2007 as D7390 07.DOI:10.1520/D7390-07R12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book
15、 of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from United States Environmental Protection Agency(EPA),ArielRios Bldg.,1200 Pennsylvania Ave.,NW,Washington,DC 20460,http:/www.epa.gov.Copyright ASTM International,100 Barr Harbor Drive,P
16、O Box C700,West Conshohocken,PA 19428-2959.United States1 in an area that is for some other reason deemed to be suitableas the basis for comparison.3.1.5 dustany material composed of particles in a sizerange of 1 mm.3.1.6 environmentwell defined three-dimensional area andeverything that is in it.3.1.7 homogeneous samplesgroup of samples that arecollected from surfaces that are visually similar in texture,dustloading and environment.3.1.8 laboratory blanka cassette or wipe taken fromlaboratory st
