ASTM_D_5317_-_20.pdf

Designation:D531720Standard Test Method forDetermination of Chlorinated Organic Acid Compounds inWater by Gas Chromatography with an Electron CaptureDetector1This standard is issued under the fixed designation D5317;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 a gas chromatographic proce-dure for the quantitative determination of selected chlorinatedacids and other acidic herbicides in water.Similar chemicalsmay also be determined by this test method,but it is the usersresponsibility to verify the applicability of this test method toany compounds not listed in this scope.The acid form of thefollowing compounds were interlaboratory tested using thistest method,and the results were found acceptable:2AnalyteChemical Abstract ServicesRegistry NumberBentazon25057-89-02,4-D94-75-72,4-DB94-82-6DCPA acid metabolites2Dicamba1918-00-93,5-Dichlorobenzoic acid51-36-5Dichlorprop120-36-55-Hydroxydicamba7600-50-2Pentachlorophenol(PCP)87-86-5Picloram1918-02-12,4,5-T93-76-52,4,5-TP(Silvex)93-72-11.2 This test method may be applicable to the determinationof salts and esters of analyte compounds.The form of each acidis not distinguished by this test method.Results are calculatedand reported for each listed analyte as the total free acid.1.3 This test method has been validated in an interlaboratorytest for reagent water and finished tap water.The analyst shouldrecognize that precision and bias reported in Section 18 maynot be applicable to other waters.1.4 This test method is restricted to use by or under thesupervision of analysts experienced in the use of gas chroma-tography(GC)and in the interpretation of gas chromatograms.Each analyst must demonstrate the ability to generate accept-able results with this test method using the procedure describedin 19.3.It is the users responsibility to ensure the validity ofthis test method for waters of untested matrices.1.5 Analytes that are not separated chromatographically,that is,which have very similar retention times,cannot beindividually identified and measured in the same calibrationmixture or water sample unless an alternate technique foridentification and quantitation exists(16.6,16.7,and 16.8).1.6 When this test method is used to analyze unfamiliarsamples for any or all of the analytes given in 1.1,analyteidentifications must be confirmed by at least one additionalqualitative technique.1.7 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.8 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.For specific warning statements,see Sections 6,8,9,and 10.1.9 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:3D1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on Water1This test method is under the jurisdiction of ASTM Committee D19 on Waterand is the direct responsibility of Subcommittee D19.06 on Methods forAnalysis forOrganic Substances in Water.Current edition approved Aug.15,2020.Published August 2020.Originallyapproved in 1992.Last previous edition approved in 2017 as D5317 98(2017).DOI:10.1520/D5317-20.2DCPA monoacid and diacid metabolites are included in the scope of this testmethod;DCPA diacid metabolite is used for validation studies.3For 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.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.D3370 Practices for Sampling Water from Flowing ProcessStreamsD3856 Guide for Management Systems in LaboratoriesEngaged in Analysis of WaterD4210 Practice for Intralaboratory Quality Control Proce-dures