1、Designation:D531698(Reapproved 2017)Standard Test Method for1,2-Dibromoethane and 1,2-Dibromo-3-Chloropropane inWater by Microextraction and Gas Chromatography1This standard is issued under the fixed designation D5316;the number immediately following the designation indicates the year oforiginal ado
2、ption 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 1,2-dibromoethane(commonly referr
3、ed to as ethylene dibromideor EDB)and 1,2-dibromo-3-chloropropane(commonly re-ferred to as DBCP)in water at a minimum detection level of0.010 g/L by liquid-liquid extraction combined with gas-liquid chromatography.This test method is applicable to theanalysis of drinking waters and groundwaters.It i
4、s not recom-mended for wastewaters,due to the potential for interferencesfrom high concentrations of other extractable organics.Similarinformation can be found in EPA Method 504.1.2 This test method was used successfully with reagentwater and groundwater.It is the users responsibility to ensurethe v
5、alidity of this test method for waters of untested matrices.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is therespo
6、nsibility 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.For specific hazard statements,see Sections 6 and 9.1.5 This international standard was developed in accor-dance with int
7、ernationally 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:2D1066 P
8、ractice for Sampling SteamD1129 Terminology Relating to WaterD1192 Guide for Equipment for Sampling Water and Steamin Closed Conduits(Withdrawn 2003)3D1193 Specification for Reagent WaterD3370 Practices for Sampling Water from Closed ConduitsD3856 Guide for Management Systems in LaboratoriesEngaged
9、in Analysis of WaterD4210 Practice for Intralaboratory Quality Control Proce-dures and a Discussion on Reporting Low-Level Data(Withdrawn 2002)3D5789 Practice for Writing Quality Control Specificationsfor Standard Test Methods for Organic Constituents(Withdrawn 2002)32.2 U.S.EPA Standards:4Method 50
10、4 Methods for the Determination of OrganicCompounds in Drinking Water,Revision 2.0,1989Method 524 Measurement of Purgeable Organic Com-pounds in Drinking Water by Gas Chromatography/MassSpectrometry3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this standard,refer toTerminology
11、D1129.4.Summary of Test Method4.1 This test method consists of microextraction of thesample followed by gas chromatographic analysis of theextract.4.2 An aliquot of the sample is extracted with hexane.TwoL of the extract are then injected into a gas chromatographequipped with a linearized electron c
12、apture detector for sepa-ration and analysis.Aqueous calibration standards are ex-tracted and analyzed in an identical manner as the samples inorder to compensate for possible extraction losses.1This test method is under the jurisdiction of ASTM Committee D19 on Waterand is the direct responsibility
13、 of Subcommittee D19.06 on Methods forAnalysis forOrganic Substances in Water.Current edition approved Dec.15,2017.Published January 2018.Originallyapproved in 1992.Last previous edition approved in 2011 as D5316 98(2011).DOI:10.1520/D5316-98R17.2For referenced ASTM standards,visit the ASTM website,
14、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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from United States Enviro
15、nmental ProtectionAgency(EPA),WilliamJefferson Clinton Bldg.,1200 Pennsylvania Ave.,NW,Washington,DC 20460,http:/www.epa.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 intern
16、ationally 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 4.3 The extraction and analysis time is 30 to 50 min persample,depending upon the analytical conditions chosen.4.4 Confirmatory evidence can be obtained using a dissimi-lar column.When component concentrations are sufficientlyhigh,Gas Chromatography/M