1、Designation:D799417Standard Test Method forTotal Fluorine,Chlorine,and Sulfur in Liquid Petroleum Gas(LPG)by Oxidative Pyrohydrolytic Combustion Followed byIon Chromatography Detection(Combustion IonChromatography-CIC)1This standard is issued under the fixed designation D7994;the number immediately
2、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.Scope1.1 This test method co
3、vers the individual determination oftotal fluorine,chlorine,and sulfur in liquid petroleum gas(LPG),low molecular weight hydrocarbons,their mixtures,and dimethyl ether(DME)in the range of 1 mg kg to300 mgkg fluorine and sulfur and 5 mg kg to 300 mg kg forchlorine.This test method is applicable to pr
4、oducts describedin Specifications D1835 and D7901 and it can be applicable toprocess streams with similar properties to LPG and othermaterials such as butylene,propylene,and olefins.1.2 This test method can also be applied to the measurementof the bromine and iodine in samples covered by the scope o
5、fthis test method,but the precision and bias statement of thistest method is not applicable to these halides.1.3 This test method can be applied to sample concentra-tions outside the scope of this test method through adjustmentsof sample injection volume or number of injections combusted(or both),ad
6、justment of injection volume to the ionchromatograph,and adjustment of the final dilution volume ofthe absorbing solution prior to injection to the ion chromato-graph.The precision and scope of this test method is notapplicable to samples that are outside the scope of the method.1.4 The values state
7、d in SI units are to be regarded asstandard.1.4.1 ExceptionValues given in parentheses are for infor-mation only.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 this standard to establish appro-priate safet
8、y and health practices and determine the applica-bility of regulatory limitations prior to use.See Section 9.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of Int
9、ernational Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterD1265 Practice for Sampling Liquefied Petroleum(LP)Gases,Manual MethodD1835 Specification fo
10、r Liquefied Petroleum(LP)GasesD3700 Practice for Obtaining LPG Samples Using a Float-ing Piston CylinderD6849 Practice for Storage and Use of Liquefied PetroleumGases(LPG)in Sample Cylinders for LPG Test MethodsD7901 Specification for Dimethyl Ether for Fuel PurposesE29 Practice for Using Significan
11、t Digits in Test Data toDetermine Conformance with SpecificationsE288 Specification for Laboratory Glass Volumetric FlasksE969 Specification for Glass Volumetric(Transfer)Pipets2.2 OSHA Standards:329 CFR Part 1910.1000 Air Contaminants29 CFR Part 1910.1200 Hazard Communication3.Terminology3.1 Defini
12、tions:3.1.1 combustion ion chromatography(CIC),nan analyti-cal system consisting of oxidative pyrohydrolytic combustionfollowed by ion chromatographic detection.3.1.2 halogen(X),na generic term which includes theelements fluorine,chlorine,bromine,and iodine.1This test method is under the jurisdictio
13、n of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.H0 on Liquefied Petroleum Gas.Current edition approved Jan.1,2017.Published April 2017.DOI:10.1520/D7994-17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,
14、orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Occupational Safety and Health Administration(OSHA),200Constitution Ave.,NW,Washington,DC 20210,http:/www.osha.gov.Co
15、pyright 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 Internationa
16、l Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.1.3 hydrogen halide(HX),ninorganic compounds withthe formula HX where X is one of the halogens:fluoride,chloride,bromide,and iodide.3.1.3.1 DiscussionHydrogen halides are gases that dis-solve in water to give acids.3.1.4 nitrogen oxides(NOX),none or more of the follow-ing compounds:nitric oxide(NO),nitrogen dioxide(NO2).3.1.5 oxidative pyrohydrolytic combustion,na process i
