1、Designation:D593220Standard Test Method forDetermination of 2,4-Toluene Diisocyanate(2,4-TDI)and 2,6-Toluene Diisocyanate(2,6-TDI)in Air(with 9-(N-Methylaminomethyl)Anthracene Method)(MAMA)in theWorkplace1This standard is issued under the fixed designation D5932;the number immediately following the
2、designation indicates the 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 covers the deter
3、mination of gaseous2,4-toluene diisocyanate(2,4-TDI)and 2,6-toluene diisocya-nate(2,6-TDI)in air samples collected from workplace andambient atmospheres.1.2 Differential air sampling is performed with a segregat-ing device.2The gaseous fraction is collected on a glass fiberfilter(GFF)impregnated wit
4、h 9-(N-methylaminomethyl)an-thracene(MAMA).1.3 The analysis of the gaseous fraction is performed with ahigh performance liquid chromatograph(HPLC)equippedwith ultraviolet(UV)and fluorescence detectors.An ultra highperformance liquid chromatograph(UPLC)can also be used,provided that its performance i
5、s equivalent to what is stated inthis standard.1.4 The analysis of the aerosol fraction is performed sepa-rately as described in Ref(1).31.5 The range of application of this test method,utilizingUV and a fluorescence detector,is validated for 0.014 to 1.16g of monomer 2,4-and 2,6-TDI/2.0 mL of desor
6、ptionsolution,which corresponds to concentrations of 0.001 to0.077 mg/m3of TDI based on a 15-L air sample.Thiscorresponds to 0.0.14 to 11 ppb(V)and brackets the establishedTLV value of 1 ppb(v).1.6 A field blank sampling system is used to check thepossibility of contamination during the entire sampl
7、ing andanalysis.1.7 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.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 es
8、tablish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.See Section 9 for additional hazards.1.9 This international standard was developed in accor-dance with internationally recognized principles on standard-ization esta
9、blished 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.2.Referenced Documents2.1 ASTM Standards:4D1193 Specification for Reagent WaterD1356 Terminology Relating to
10、 Sampling and Analysis ofAtmospheresD1357 Practice for Planning the Sampling of the AmbientAtmosphereD4840 Guide for Sample Chain-of-Custody ProceduresD5337 Practice for Flow Rate Adjustment of Personal Sam-pling Pumps2.2 Other Documents:Sampling Guide for Air Contaminants in the Workplace53.Termino
11、logy3.1 For definitions of terms used in this test method,refer toTerminology D1356.1This test method is under the jurisdiction of ASTM Committee D22 on AirQuality and is the direct responsibility of Subcommittee D22.04 on Workplace AirQuality.Current edition approved March 1,2020.Published May 2020
12、.Originallyapproved in 1996.Last previous edition approved in 2013 as D5932 08(2013)1.DOI:10.1520/D5932-20.2ASTM International takes no position respecting the validity of any patentrights asserted in connection with any item mentioned in this standard.Users of thisstandard are expressly advised tha
13、t determination of the validity of any such patentrights,and the risk of infringement of such rights,are entirely their ownresponsibility.3The boldface numbers in parentheses refer to a list of references at the end ofthis standard.4For referenced ASTM standards,visit the ASTM website,www.astm.org,o
14、rcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.5Available from Institut de Recherche en Sant et en Scurit du Travail(IRSST),Laboratory Division,Montreal,QC,2012,http:/www.irsst.qc.c
15、a/media/documents/Pubirsst/T-15.pdf.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 Princip
16、les for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.4.Summary of Test Method4.1 A known volume of air is drawn through a segregatingsampling device.4.2 Gaseous and aerosol fraction are sampled simultane-ously with a two filter loaded cassette.The aerosol is collectedon the first filter made of polytetrafluoroethylene(PTFE),thegaseous counterpart being adsorbed on the second filter madeof gla
