1、Designation:D614221Standard Test Method forAnalysis of Phenol by Capillary Gas Chromatography1This standard is issued under the fixed designation D6142;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A numbe
2、r in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers the determination of knownimpurities in phenol by gas chromatography(GC).It isgenerally meant for the analysis of pheno
3、l of 99.9%or greaterpurity.1.2 This test method has been found applicable over impu-rity concentrations up to 70 mg/kg.Users of this methodbelieve it is linear over a wider range.The limit of detection(LOD)is 1.7 mg/kg and the limit of quantitation(LOQ)is5.8 mgkg.NOTE1LOD is defined in 7.1 as part o
4、f the method setup.The valuesabove were calculated based on the ILS data for acetone,acetophenone,-methylstyrene,and 2-methylbenzofuran in Table 3.1.3 In determining the conformance of the test results usingthis method to applicable specifications,results shall berounded off in accordance with the r
5、ounding-off method ofPractice E29.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of t
6、his 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 9.1.6 This international standard was developed in accor-dance with internationally recognized principle
7、s 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(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D3852 Practice for Sampling and Handling
8、 Phenol,Cresols,and Cresylic AcidD4307 Practice for Preparation of Liquid Blends for Use asAnalytical StandardsD4790 Terminology of Aromatic Hydrocarbons and RelatedChemicalsD6809 Guide for Quality Control and Quality AssuranceProcedures for Aromatic Hydrocarbons and Related Ma-terialsE29 Practice f
9、or Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE355 Practice for Gas Chromatography Terms and Relation-shipsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE1510 Practice for Installing Fused Silica Open TubularCapi
10、llary Columns in Gas Chromatographs2.2 Other Document:OSHA Regulations,29 CFR paragraphs 1910.1000 and1910.120033.Terminology3.1 See Terminology D4790 for definitions of terms used inthis test method.4.Summary of Test Method4.1 A known amount of an internal standard is added to asample of phenol.The
11、 prepared sample is mixed and analyzedby a gas chromatograph equipped with a flame ionizationdetector(FID).The peak area of each impurity and the internal1This test method is under the jurisdiction of ASTM Committee D16 onAromatic,Industrial,Specialty and Related Chemicals and is the direct responsi
12、-bility of Subcommittee D16.02 on Oxygenated Aromatics.Current edition approved Nov.1,2021.Published November 2021.Originallyapproved in 1997.Last previous edition approved in 2016 as D6142 16.DOI:10.1520/D6142-21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Cust
13、omer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,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.g
14、ov.*A Summary of Changes section appears at the end of this standardCopyright 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 establ
15、ished 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.1?standard is measured.The amount of each impurity is calcu-lated from the ratio of the peak area of the inter
16、nal standardversus the peak area of the impurity.Results are reported inmilligrams per kilogram.5.Significance and Use5.1 This test method is suitable for setting specifications onphenol and for use as an internal quality control tool wherephenol is produced or is used in a manufacturing process.Itmay also be used in development or research work involvingphenol.It is generally applied to determining those commonlyoccurring impurities such as mesityl oxide,cumene,hydroxyacetone,acetone,-methylsty
