ASTM_D_7731_-_17.pdf

Designation:D773117Standard Test Method forDetermination of Dipropylene Glycol Monobutyl Ether andEthylene Glycol Monobutyl Ether in Sea Water by LiquidChromatography/Tandem Mass Spectrometry(LC/MS/MS)1This standard is issued under the fixed designation D7731;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 determination of dipropyl-ene glycol monobutyl ether(DPGBE)and ethylene glycolmonobutyl ether(EGBE)in sea water by direct injection usingliquid chromatography(LC)and detection with tandem massspectrometry(MS/MS).These analytes are qualitatively andquantitatively determined by this test method.This test methodadheres to selected reaction monitoring(SRM)mass spectrom-etry.1.2 The detection verification level(DVL)and reportingrange for DPGBE and EGBE are listed in Table 1.1.2.1 The DVL is required to be at a concentration at least3 times below the reporting limit(RL)and have a signal/noiseratio greater than 3:1.Fig.1 and Fig.2 display the signal/noiseratio of the single reaction monitoring(SRM)transition.1.2.2 The reporting limit is the concentration of the Level 1calibration standard as shown in Table 4 for DPGBE andEGBE,taking into account the 20%sample preparationdilution factor.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 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.1.5 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:2D1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on Water2.2 Other Standards:3EPA Publication SW-846 Test Methods for Evaluating SolidWaste,Physical/Chemical Methods3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this standard,refer toTerminology D1129.3.2 Definitions of Terms Specific to This Standard:3.2.1 detection verification level,DVL,na concentrationthat has a signal/noise ratio greater than 3:1 and is at least 3times below the reporting limit(RL).3.2.2 reporting limit,RL,nthe concentration of thelowest-level calibration standard used for quantification.3.2.2.1 DiscussionIn this test method,a 20-mL samplealiquot is diluted to a 25-mL final volume after thoroughlyrinsing the collection vial with acetonitrile for quantitativetransfer.In this case,the lowest calibration level of 100 ppb forEGBE would allow for a reporting limit of 125 ppb to beachieved.3.3 Abbreviations:3.3.1 mMmillimolar,1 103moles/L3.3.2 NAno addition3.3.3 NDnon-detect3.3.4 ppbparts per billion,g/L3.3.5 pptparts per trillion,ng/L1This 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 Dec.15,2017.Published January 2018.Originallyapproved in 2011.Last previous edition approved in 2011 as D7731 111.DOI:10.1520/D7731-17.2For 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 National Technical Information Service(NTIS),5301 ShawneeRd.,Alexandria,VA 22312,http:/www.ntis.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 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 4.Summary of Test Method4.1 This is a performance-based method,and modificationsare allowed to improve performance.4.2 For DPGBE and EGBE analysis,samples are shipped tothe lab between 0C and 6C and analyzed within 5 days ofcollection.The DOW MSDS sheet on DOWANOL*DPNBglycol ether(DPGBE)(Issue Date:06/18/2010)lists that thematerial is readily biodegradable.The Organisation for Eco-nomic Co-Operation and Development(OECD)302B Test lists96%biodegradation in