1、Designation:D531698(Reapproved 2011)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 and health practices and determine the applica-bility of regulatory limitations prior to use.For specific hazardstatements,see Sections 6 and 9.2.Referenced Documents2.1 ASTM Standards:2D1066 Practice for Sampling SteamD1129 Ter
7、minology Relating to WaterD1192 Guide for Equipment for Sampling Water and Steamin Closed Conduits(Withdrawn 2003)3D1193 Specification for Reagent WaterD3370 Practices for Sampling Water from Closed ConduitsD3856 Guide for Management Systems in LaboratoriesEngaged in Analysis of WaterD4210 Practice
8、for Intralaboratory Quality Control Proce-dures and a Discussion on Reporting Low-Level Data(Withdrawn 2002)3D5789 Practice for Writing Quality Control Specificationsfor Standard Test Methods for Organic Constituents(Withdrawn 2002)32.2 U.S.Environmental Protection Agency Standards:Winfield,T.W.,“U.
9、S.EPA Method 504,Revision 2.0,”Methods for the Determination of Organic Compounds inDrinking Water,198943.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Terminology D1129.4.Summary of Test Method4.1 This test method consists of microextraction of thesample follow
10、ed 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 capture detector for sepa-ration and analysis.Aqueous calibration standards are ex-tracted and anal
11、yzed in an identical manner as the samples inorder to compensate for possible extraction losses.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 concentra
12、tions are sufficientlyhigh,Gas Chromatography/Mass Spectrometric(GC/MS)methods may be used for confirmation analysis.(See EPAMethod 524.2.)1This test method is under the jurisdiction of ASTM Committee D19 on Waterand is the direct responsibility of Subcommittee D19.06 on Methods forAnalysis forOrgan
13、ic Substances in Water.Current edition approved May 1,2011.Published June 2011.Originallyapproved in 1992.Last previous edition approved in 2004 as D5316 98(2004).DOI:10.1520/D5316-98R11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm
14、.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 U.S.Environmental Protection Agency,26 W.Martin LutherKing Ave.,Cincinnati,OH 4
15、5268.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Significance and Use5.1 This test method is useful for the analysis of drinkingwater and groundwaters.Other waters may be analyzed by thismethod,see 1.2.5.2 EDB and DBCP have been wid
16、ely used as soil fumi-gants.EDB is also used as a lead scavenger in leaded gasolines.These compounds are very water soluble and are often found ingroundwater and drinking water.Since they are highly toxicand are suspected carcinogens,there is concern about thepotential health impact of even extremely low concentrationsin potable water.6.Interferences6.1 Impurities contained in the extracting solvent usuallyaccount for the majority of the analytical problems.Solventblanks should be analyzed on ea
