ASTM_D_5790_-_95_2012.pdf

Designation:D579095(Reapproved 2012)Standard Test Method forMeasurement of Purgeable Organic Compounds in Water byCapillary Column Gas Chromatography/Mass Spectrometry1This standard is issued under the fixed designation D5790;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 identification and simulta-neous measurement of purgeable volatile organic compounds.It has been validated for treated drinking water,wastewater,and ground water.This test method is not limited to theseparticular aqueous matrices;however,the applicability of thistest method to other aqueous matrices must be demonstrated.1.2 This test method is applicable to a wide range of organiccompounds that have sufficiently high volatility and low watersolubility to be efficiently removed from water samples usingpurge and trap procedures.Table 1 lists the compounds thathave been validated for this test method.This test method is notlimited to the compounds listed in Table 1;however,theapplicability of the test method to other compounds must bedemonstrated.1.3 Analyte concentrations up to approximately 200 g/Lmay be determined without dilution of the sample.Analytesthat are inefficiently purged from water will not be detectedwhen present at low concentrations,but they can be measuredwith acceptable accuracy and precision when present in suffi-cient amounts.1.4 Analytes that are not separated chromatographically,butthat have different mass spectra and noninterfering quantitationions,can be identified and measured in the same calibrationmixture or water sample.Analytes that have very similar massspectra cannot be individually identified and measured in thesame calibration mixture or water sample unless they havedifferent retention times.Coeluting compounds with verysimilar mass spectra,such as structural isomers,must bereported as an isomeric group or pair.Two of the three isomericxylenes are examples of structural isomers that may not beresolved on the capillary column,and if not,must be reportedas an isomeric pair.1.5 It is the responsibility of the user to ensure the validityof this test method for untested matrices.1.6 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1129 Terminology Relating to WaterD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on WaterD3871 Test Method for Purgeable Organic Compounds inWater Using Headspace SamplingD3973 Test Method for Low-Molecular Weight HalogenatedHydrocarbons in WaterD4210 Practice for Intralaboratory Quality Control Proce-dures and a Discussion on Reporting Low-Level Data(Withdrawn 2002)3E355 Practice for Gas Chromatography Terms and Relation-ships2.2 Other Document:Code of Federal Regulations 40 CFR Part 26143.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Definitions D1129 and Practice E355.3.2 Definitions of Terms Specific to This Standard:3.2.1 calibration standarda solution prepared from theprimary dilution standard solution and stock standard solutionsof the internal standards and surrogate analytes.The calibration1This 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 June 15,2012.Published June 2012.Originallyapproved in 1995.Last previous edition approved in 2006 as D5790 95(2006).DOI:10.1520/D5790-95R12.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from the Superintendent of Documents,U.S.Government PrintingOffice,Washington,DC 20402.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 standards are used to calibrate the instrument response withrespect to analyte concentration.3.2.2 field duplicates two separate samples collected atthe same time and place under identical circumstances andtreated exactly the same throughout field and laboratoryprocedures.Analysis of field duplicates gives an indication ofthe precision associated with sample collection,preservati