ASTM_D_5954_-_22.pdf

Designation:D595422Standard Test Method forMercury Sampling and Measurement in Gaseous Fuels byAtomic Absorption Spectroscopy1This standard is issued under the fixed designation D5954;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.Scope1.1 This test method covers the determination of totalmercury in gaseous fuels at concentrations down to 0.5 ng m3.It includes separate procedures for both sampling and atomicabsorption spectrophotometric determination of mercury.Thisprocedure detects both inorganic and organic forms of mercury.1.2 UnitsThe values stated in SI units are to be regardedas the standard.1.3 WarningMercury has been designated by many regu-latory agencies as a hazardous material that can cause seriousmedical issues.Mercury,or its vapor,has been demonstrated tobe hazardous to health and corrosive to materials.Cautionshould be taken when handling mercury and mercury contain-ing products.See the applicable product Safety Data Sheet(SDS)for additional information.Users should be aware thatselling mercury or mercury containing products,or both,intoyour state or country may be prohibited by law.1.4 This standard does not purport to address all of thesafety concerns associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety,health,and environmental practices and determine the appli-cability of regulatory limitations prior to use.1.5 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 TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterD4150 Terminology Relating to Gaseous Fuels2.2 USEPA Document:3Method 1631,Revision E Mercury in Water by Oxidation,Purge and Trap,and Cold Vapor Atomic FluorescenceSpectrometry.EPA-821-R-02-019.U.S.EnvironmentalProtection Agency,Office of Water,August 20022.3 Other Document:440 CFR Part 136 Appendix B Definition and Procedure forthe Determination of the Method Detection Limit,Revi-sion 2,EPA Office of Water,EPA 821-R-16-0063.Terminology3.1 DefinitionsFor definitions of general terms used inD03 Gaseous Fuels standards,refer to Terminology D4150.3.2 Definitions of Terms Specific to This Standard:3.2.1 Detection Limit,na statistically derived value rep-resenting the lowest quantity of analyte that can confidently bedistinguished from background signal.3.2.2 Limit of Quantification,nthe lowest value of analytewhich can be quantitatively described and is represented by thelowest point on the calibration curve.3.2.3 sorbent,na solid material that captures the analyte(mercury)from a gaseous source for quantitative analysis andis securely contained in sample tubes for sampling andanalysis.3.3 Abbreviations:3.3.1 AASatomic absorption spectroscopy3.3.2 TFEtetrafluoroethylene4.Summary of Test Method4.1 Mercury in a gas stream is adsorbed onto gold-coatedsorbent and subsequently directly desorbed by heat into a longpath-length,inert cell connected to an atomic absorptionspectrophotometer.Mercury atoms are detected by measuringtheir absorbance of light from a mercury source lamp at acharacteristic wavelength.Analyte mass is determined by1This test method is under the jurisdiction ofASTM Committee D03 on GaseousFuels and is the direct responsibility of Subcommittee D03.05 on Determination ofSpecial Constituents of Gaseous Fuels.Current edition approved June 1,2022.Published June 2022.Originallyapproved in 1996.Last previous edition approved 2014 as D5954 98(2014)1.DOI:10.1520/D5954-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from United States Environmental ProtectionAgency(USEPA),1200Pennsylvania Ave.,NW,Washington,DC 20460,https:/www.epa.gov.4Available from https:/www.ecfr.gov.Copyright 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 International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1comparing the instrument response of the unknown sample toa response-versus-mass curve,generated daily from calibrationstandards.5.Significance and Use5.1 This test method can be used to measure the level ofmercury in an