1、Designation:D656220Standard Test Method forDetermination of Gaseous Hexamethylene Diisocyanate(HDI)in Air with 9-(N-methylaminomethyl)AnthraceneMethod(MAMA)in the Workplace1This standard is issued under the fixed designation D6562;the number immediately following the designation indicates the year o
2、foriginal 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 determination of gaseoushexamethylene
3、 diisocyanate(HDI)in air samples collectedfrom workplace and ambient atmospheres.The method de-scribed in this test method collects separate fractions.Onefraction will be dominated by vapor,and the other fraction willbe dominated by aerosol.The results obtained from theanalysis of the separate fract
4、ions do not necessarily representthe true partition of the measured HDI physical phases,andshould only be considered a representation of the general trendin the physical phase partition within samples.The analyses ofthe two fractions are different,and are provided in separate,linked,standards to avo
5、id confusion.This test method isprincipally used to determine short term exposure(15 min)ofHDI in workplace environments for personal monitoring or inambient air.The analysis of the aerosol fraction is performedseparately,as described in Test Method D6561.1.2 Differential air sampling is performed w
6、ith a segregat-ing device.The vapor fraction is collected on a glass fiber filter(GFF)impregnated with 9-(N-methylaminomethyl)anthracene(MAMA).1.3 The range of application of this test method has beenvalidated from 0.006 to 1.12 g of monomeric HDI/2.0 mL ofdesorption solution,which corresponds to co
7、ncentrationsequivalent to 0.0004 to 0.075 mg/m3of HDI based on a 15 Lair sample.Those concentrations correspond to a range ofvapor phase concentrations from 0.06 ppb(V)to 11 ppb(V)andcover the established threshold limit value(TLV)value of 5ppb(V).1.4 The quantification limit for the monomeric HDI,u
8、singthe UV detection,has been established as 0.012 g/2 mL ofdesorption solution and as 0.008 g/2 mL,using the fluores-cence detector.These limits correspond to 0.0008 mg/m3and0.0005 mg/m3respectively for an air sampled volume of 15 L.These values are equal to ten times the standard deviation(SD)obta
9、ined from ten measurements carried out on a standardsolution in contact with the GFF,whose concentration of 0.02g/2 mL is close to the expected detection limit.1.5 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.6 This standard
10、 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 applicability of regulatory limitations prior to use.See Section 9 for add
11、itional hazards.1.7 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 World Trade Organization Techn
12、icalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterD1356 Terminology Relating to Sampling and Analysis ofAtmospheresD1357 Practice for Planning the Sampling of the AmbientAtmosphereD4840 Guide for Sample Chain-of-Custody ProceduresD5337
13、 Practice for Flow Rate Adjustment of Personal Sam-pling PumpsD6561 Test Method for Determination of Aerosol Mono-meric and Oligomeric Hexamethylene Diisocyanate(HDl)in Air with(Methoxy-2phenyl-1)Piperazine(MOPIP)inthe Workplace1This test method is under the jurisdiction of ASTM Committee D22 on Air
14、Quality and is the direct responsibility of Subcommittee D22.04 on Workplace AirQuality.Current edition approved March 1,2020.Published June 2020.Originallyapproved in 2000.Last previous edition approved in 2012 as D6562 12.DOI:10.1520/D6562-20.2For referenced ASTM standards,visit the ASTM website,w
15、ww.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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis internat
16、ional 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 Trade(TBT)Committee.3.Terminology3.1 For definitions of terms used in this test method,refer toTerminology D1356.4.Summary of Test Method4.1 Vapor and aerosol fractions are sampled simultaneouslyby using a segregating s
