1、Designation:D593208(Reapproved 2013)1Standard 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 immediat
2、ely following the 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.1NOTEEditorial corrections
3、 were made to 8.14.8 and 11.2.1 in March 2015.1.Scope1.1 This test method covers the determination 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 segrega
4、t-ing device.2,3The gaseous fraction is collected on a glass fiberfilter(GFF)impregnated with 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.1.4 The
5、 analysis of the aerosol fraction is performed sepa-rately as described in Ref(1).41.5 The range of application of this test method,utilizingUV and a fluorescence detector,is validated for 0.029 to 1.16g of monomer 2,4-and 2,6-TDI/2.0 mL of desorptionsolution,which corresponds to concentrations of 0
6、.002 to0.077 mg/m3of TDI based on a 15-L air sample.Thiscorresponds to 0.28 to 11 ppb(V)and brackets the establishedTLV value of 5 ppb(v).1.6 A field blank sampling system is used to check thepossibility of contamination during the entire sampling andanalysis.1.7 The values stated in SI units are to
7、 be regarded as thestandard.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 and health practices and determine the applica-bility of regulatory limitations pri
8、or to use.2.Referenced Documents2.1 ASTM Standards:5D1193 Specification for Reagent WaterD1356 Terminology Relating to Sampling and Analysis ofAtmospheresD1357 Practice for Planning the Sampling of the AmbientAtmosphere2.2 Other Documents:Sampling Guide for Air Contaminants in the Workplace63.Termin
9、ology3.1 For definitions of terms used in this test method,refer toTerminology D1356.4.Summary of Test Method4.1 A known volume of air is drawn through a segregatingsampling device.1This test method is under the jurisdiction of ASTM Committee D22 on AirQuality and is the direct responsibility of Sub
10、committee D22.04 on Workplace AirQuality.Current edition approved April 1,2013.Published April 2013.Originallyapproved in 1996.Last previous edition approved in 2008 as D5932 08.DOI:10.1520/D5932-08R13E01.2The sampling device for isocyanates is covered by a patent held by JacquesLesage et al,IRSST,5
11、05 De Maisonneuve Blvd West,Montreal,Quebec,Canada.Interested parties are invited to submit information regarding the identification ofacceptable alternatives to this patented item to the Committee on Standards,ASTMInternational Headquarters,100 Barr Harbor Dr.,PO Box C700,WestConshohocken,PA 19428.
12、Your comments will receive careful consideration at ameeting of the committee responsible,which you may attend.This sampling deviceis currently commercially available under license from SKC Omega SpecialtyDivision,Eighty-Four,PA.3The American Society for Testing and Materials takes no position respe
13、ctingthe validity of any patent rights asserted in connection with any item mentioned inthis standard.Users of this standard are expressly advised that determination of thevalidity of any such patent rights,and the risk of infringement of such rights,areentirely their own responsibility.4The boldfac
14、e numbers in parentheses refer to the list of references at the end ofthis test method.5For 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 pag
15、e onthe ASTM website.6Available from Institut de Recherche en Sant et en Scurit du Travail duQubec,Laboratory Services and Expertise Department,Montreal,IRSST,2005.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.2 Gaseous and aerosol fr
16、action are sampled simultane-ously with a two filter loaded cassette.2The aerosol is collectedon the first filter made of polytetrafluoroethylene(PTFE),thegaseous counterpart being adsorbed on the second filter madeof glass fiber(GFF)impregnated with MAMA.4.3 The analysis of the monomer and oligomer in theaerosol fraction is performed separately in accordance with theprocedure described in Ref(1,2).4.4 The diisocyanate present as a gas reacts with thesecondary amine function of the MAMA impregna
