1、Designation:D531010(Reapproved 2018)Standard Test Method forTar Acid Composition by Capillary Gas Chromatography1This standard is issued under the fixed designation D5310;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of la
2、st 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 quantitative determinationof phenol and certain homologues of phenol in tar acid andcresylic acid
3、 mixtures using capillary gas chromatography.It isa normalization test method that determines homolog distribu-tion but is not an absolute assay since it does not account forwater or other compounds not detected by a flame ionizationdetector.1.2 In determining the conformance of the test results usi
4、ngthis method to applicable specifications,results shall berounded off in accordance with the rounding-off method ofPractice E29.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 This standard does not purport to address al
5、l 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.For specific hazard statements,see Section 8.1.5 Thi
6、s 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 TechnicalBarriers to Trade(T
7、BT)Committee.2.Referenced Documents2.1 ASTM Standards:2D3852 Practice for Sampling and Handling Phenol,Cresols,and Cresylic AcidD4790 Terminology of Aromatic Hydrocarbons and RelatedChemicalsD6809 Guide for Quality Control and Quality AssuranceProcedures for Aromatic Hydrocarbons and Related Ma-teri
8、alsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 Other Documents:OSHA Regulations,29 CFR paragraphs 1910.1000,and1910.120033.Terminology3.1 For definition of terms used in this test method seeTerminology D4790.4.Summary of Test Method4.1 The sa
9、mple composition is determined by capillary gaschromatography.The weight percent composition is calculatedfrom the ratio of the individual peak areas to the total area ofall peaks using appropriate response factors determined foreach component by means of a calibration sample.5.Significance and Use5
10、.1 This test method is suitable for the general quantitativeanalysis of commercial tar acid mixtures.It may be used as atool for quality control and specification purposes by producersand users.6.Apparatus6.1 ChromatographAgas chromatograph compatible withcapillary columns,equipped with inlet splitt
11、er and high tem-perature flame ionization detector.Typical Operating Condi-tions are given in Table 1.6.2 Peak IntegratorElectronic integration is recom-mended.6.3 Recorder,with full scale response time of 1 s or less.6.4 Microsyringe,capacity of 1 L.6.5 Capillary ColumnAny column capable of resolvi
12、ngall components of interest.Prepared columns are commercially1This test method is under the jurisdiction of ASTM Committee D16 onAromatic,Industrial,Specialty and Related Chemicals and is the direct responsi-bility of Subcommittee D16.02 on Oxygenated Aromatics.Current edition approved Nov.1,2018.P
13、ublished November 2018.Originallyapproved in 1994.Last previous edition approved in 2014 as D5310 10(2014).DOI:10.1520/D5310-10R18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information
14、,refer to the standards Document Summary page onthe ASTM website.3Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken
15、,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
16、Technical Barriers to Trade(TBT)Committee.1 available from chromatography supply houses.Chromato-grams from three columns are presented in Fig.1,Fig.2,andFig.3.Peak identification is given in Table 2.7.Reagents and Materials7.1 Calibration StandardsSamples of known compositionrepresentative of samples to be analyzed.8.Hazards8.1 Consult current OSHA regulations and suppliers safetydata sheets,and local regulations for all materials used in thistest method.9.Sampling9.1 Sample the material in acc
