1、Designation:D752122Standard Test Method forDetermination of Asbestos in Soil1This standard is issued under the fixed designation D7521;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses
2、indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers a procedure to:(1)identifyasbestos in soil,(2)provide an estimate of the concentration ofasbestos in the sampled soil(dried),and(3)option
3、ally toprovide a concentration of asbestos reported as the number ofasbestos structures per gram of sample.1.2 In this test method,results are produced that may beused for evaluation of sites contaminated by construction,mineand manufacturing wastes,deposits of natural occurrences ofasbestos(NOA),an
4、d other sources of interest to the investiga-tor.1.3 This test method describes the gravimetric,sieve,andother laboratory procedures for preparing the soil for analysisas well as the identification and quantification of any asbestosdetected.Pieces of collected soil and material embeddedtherein that
5、pass through a 19-mm sieve will become part of thesample that is analyzed and for which results are reported.1.3.1 Asbestos is identified and quantified by polarized lightmicroscopy(PLM)techniques including analysis of morphol-ogy and optical properties.Optional transmission electronmicroscopy(TEM)i
6、dentification and quantification of asbestosis based on morphology,selected area electron diffraction(SAED),and energy dispersive X-ray analysis(EDXA).Someinformation about fiber size may also be determined.The PLMand TEM methods use different definitions and size criteria forfibers and structures.S
7、eparate data sets may be produced.1.4 This test method has an analytical sensitivity of 0.25%by weight with optional procedures to allow for an analyticalsensitivity of 0.1%by weight.1.5 This test method does not purport to address samplingstrategies or variables associated with soil environments.Su
8、chconsiderations are the responsibility of the investigator collect-ing and submitting the sample.Appendix X2 covering ele-ments of soil sampling and good field practices is attached.1.6 UnitsThe values stated in SI units are to be regardedas the standard.Other units may be cited in the method forin
9、formational purposes only.1.7 HazardsAsbestos fibers are acknowledged carcino-gens.Breathing asbestos fibers can result in disease of thelungs including asbestosis,lung cancer,and mesothelioma.Precautions should be taken to avoid creating and breathingairborne asbestos particles when sampling and an
10、alyzingmaterials suspected of containing asbestos.1.8 This standard does not purport to address all of thesafety 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 applica
11、bility of regulatory limitations prior to use.1.9 This international 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
12、World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C136 Test Method for Sieve Analysis of Fine and CoarseAggregatesD1193 Specification for Reagent WaterD3670 Guide for Determination of Precision and Bias ofMethods of Committee D22D6281 Test Me
13、thod for Airborne Asbestos Concentration inAmbient and Indoor Atmospheres as Determined byTransmission Electron Microscopy Direct Transfer(TEM)D6620 Practice for Asbestos Detection Limit Based onCountsD7712 Terminology for Sampling and Analysis of AsbestosE11 Specification for Woven Wire Test Sieve
14、Cloth and TestSievesE177 Practice for Use of the Terms Precision and Bias inASTM Test Methods1This test method is under the jurisdiction of ASTM Committee D22 on AirQuality and is the direct responsibility of Subcommittee D22.07 on Sampling,Analysis,Management of Asbestos,and Other Microscopic Parti
15、cles.Current edition approved June 1,2022.Published July 2022.Originally approvedin 2013.Last previous edition approved in 2016 as D7521 16.DOI:10.1520/D7521-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of AS
16、TMStandards volume information,refer to the standards Document Summary page onthe ASTM website.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 standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Tra
