ASTM_D_7773_-_19.pdf

Designation:D777319Standard Test Method forDetermination of Volatile Inorganic Acids(HCl,HBr,andHNO3)Using Filter Sampling and Suppressed IonChromatography1This standard is issued under the fixed designation D7773;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 is intended for use in the determinationof the time-weighted average mass concentration of hydrogenchloride gas and hydrochloric acid mist,hydrogen bromidevapor and hydrobromic acid mist,and nitric acid vapor andmist in workplace air.The samples are collected on analkali-impregnated quartz fiber filter and analyzed by ionchromatography.This test method is also appropriate formeasuring short term exposures.1.2 This test method assumes that air samples are collectedusing appropriate and applicableASTM International standardsfor sampling of workplace air.1.3 The procedure is targeted for occupational and environ-mental hygiene monitoring purposes.1.4 No detailed operating instructions are provided becauseof differences among various makes and models of suitableinstruments.Instead,the analyst shall follow the instructionsprovided by the manufacturer of the particular instrument.Thisstandard does not address comparative accuracy of differentdevices or the precision between instruments of the same makeand model.1.5 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.6 This test method contains notes,which are explanatoryand not part of mandatory requirements of the standard.1.7 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.1.8 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:2D882 Test Method for Tensile Properties of Thin PlasticSheetingD1193 Specification for Reagent WaterD1356 Terminology Relating to Sampling and Analysis ofAtmospheresD4840 Guide for Sample Chain-of-Custody ProceduresD5337 Practice for Flow Rate Adjustment of Personal Sam-pling PumpsD7035 Test Method for Determination of Metals and Met-alloids in Airborne Particulate Matter by InductivelyCoupled Plasma Atomic Emission Spectrometry(ICP-AES)E1370 Guide for Air Sampling Strategies for Worker andWorkplace Protection2.2 ISO Standards:3ISO 648 Laboratory Glassware Single-Volume PipettesISO 1042 Laboratory Glassware One-Mark VolumetricFlasksISO 7708 Air Quality Particle Size Fraction Definitionsfor Health-Related SamplingISO 20581 Workplace Air General Requirements for thePerformance of Procedures for the Measurement ofChemical AgentsISO 22065 Workplace Air Gases and Vapours Re-quirements for Evaluation of Measuring Procedures UsingPumped Samplers1This test method is under the jurisdiction of ASTM Committee D22 on AirQuality and is the direct responsibility of Subcommittee D22.04 on Workplace AirQuality.Current edition approved Oct.1,2019.Published October 2019.Originallyapproved in 2012.Last previous edition approved in 2012 as D7773 12.DOI:10.1520/D7773-19.2For 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 American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.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.1 3.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Terminology D1356.4.Summary of Test Method4.1 A known volume of air is drawn through a pre-filter andan alkali-impregnated quartz fiber filter,mounted in an inhal-able sampler,to collect HCl,HBr,and HNO3.The acids arecollected on the impregnated quartz fiber filter,while particu-late salts of the acids are trapped on the pre-filter.4.2 The acids collected on the sampling filter are extractedwith water or eluent t