ASTM_D_3606_-_22.pdf

Designation:D360622Standard Test Method forDetermination of Benzene and Toluene in Spark IgnitionFuels by Gas Chromatography1This standard is issued under the fixed designation D3606;the number immediately 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.1.Scope*1.1 This test method covers the quantitation in liquidvolume percent of benzene and toluene in finished motor andaviation spark ignition fuels by gas chromatography.This testmethod has two procedures:ProcedureAuses capillary columngas chromatography and Procedure B uses packed column gaschromatography.Procedures A and B have separate precisions.1.2 The method has been evaluated for benzene using aD6300-compliant Interlaboratory Study(ILS),with the lowestand highest ILS sample concentration means as follows:(1)Procedure A between 0.12%and 5.2%by volume and(2)Procedure B between 0.10%and 5.0%by volume.1.3 The method has been evaluated for toluene using aD6300-compliant Interlaboratory Study(ILS),with the lowestand highest ILS sample concentration means as follows:(1)Procedure A between 0.4%and 19.7%by volume,and(2)Procedure B between 2.0%and 20.0%by volume.1.4 For reporting,the lowest and highest concentrationranges for benzene and toluene for Procedure A of this testmethod per Practice D6300 see 13.2.1.5 For reporting,the lowest and highest concentrationranges for benzene and toluene for Procedure B of this testmethod per Practice D6300 see 25.2.1.6 For benzene by Procedure A,the following oxygenatedfuels are included in the working range:(1)ethanol up to 20%by volume(E20);(2)methanol up to 10%by volume(M10).Fuels M85 and E85 were excluded.1.7 For benzene by Procedure B the following oxygenatedfuels are included in the working range:(1)ethanol up to 20%by volume(E20);(2)methanol up to 10%by volume(M10).Fuels M85 and E85 were excluded.1.8 For toluene by Procedure A the following oxygenatedfuels were included in the working range:(1)ethanol up to20%by volume(E20);(2)M85 and E85.1.9 For toluene by Procedure B the following oxygenatedfuels are included in the working range:(1)ethanol up to 20%by volume(E20);(2)M85 and E85.1.10 Procedure A uses MIBK as the internal standard.Procedure B uses sec-butanol as the internal standard.The useof Procedure B for fuels containing blended butanols requiresthat sec-butanol be below the detection limit in the fuels assec-butanol is an internal standard.For Procedure B,analternative separation column set described in the annex(A2.3,Annex Approach B)uses MEK as the internal standard whenbutanols may be blended into gasolines.1.11 This test method includes a between method biassection for benzene based on Practice D6708 bias assessmentbetween Test Method D3606 Procedure B and Test MethodD5769.It is intended to allow Test Method D3606 ProcedureB to be used as a possible alternative to Test Method D5769.The Practice D6708 derived benzene correlation equation isapplicable for benzene measurements in the reportable rangefrom 0.06%to 2.88%by volume as reported by Test MethodD3606 Procedure B(see 27.2.1).The correlation complies withEPAs Performance Based Measurement System(PBMS).1.12 Correlation equations are included in the between testmethods bias section 14.2.1 of Procedure A to convert Proce-dure A to the Procedure B volume percent values for benzeneand toluene.The correlations are applicable in the concentra-tion ranges of 0.07%to 5.96%by volume for benzene and0.36%to 20.64%by volume for toluene as reported byProcedure A.1.13 The values stated in SI units are to be regarded asstandard.The values given in parentheses are for informationonly.1.14 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.15 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for the1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.04.0L on Gas Chromatography Methods.Current edition approved Sept.1,2022.Published October 2022.Originallyapproved in 1977.Last previous edition approved in 2021 as D3606 21.DOI:10.1520/D3606-22.*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 established in the Decision on Principles for theDevelopment of