ASTM_D_1688_-_17.pdf

Designation:D168817Standard Test Methods forCopper in Water1This standard is issued under the fixed designation D1688;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 These test methods cover the determination of copper inwater by atomic absorption spectrophotometry.Section 34 onQuality Control pertains to these test methods.Three testmethods are included as follows:Test MethodConcentrationRangeSectionsAAtomic Absorption,Direct0.05 to 5 mg/L7 15BAtomic Absorption,Chelation-Extraction50 to 500 g/L16 24CAtomic Absorption,Graphite Furnace5 to 100 g/L25 331.2 Either dissolved or total recoverable copper may bedetermined.Determination of dissolved copper requires filtra-tion through a 0.45-m(11.10)membrane filter at the time ofcollection.In-line membrane filtration is preferable.1.3 The values stated in SI units are to be regarded asstandard.The values given in parentheses are mathematicalconversion to inch-pound units that are provided for informa-tion only and are not considered standard.1.4 Three former photometric test methods were discontin-ued.Refer to Appendix X1 for historical information.1.5 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.For specific hazardstatements,see 11.3,11.9.1,20.10,and 22.11.1.6 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:2D858 Test Methods for Manganese in WaterD1066 Practice for Sampling SteamD1068 Test Methods for Iron in WaterD1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD1687 Test Methods for Chromium in WaterD1691 Test Methods for Zinc in WaterD1886 Test Methods for Nickel in WaterD1976 Test Method for Elements in Water by Inductively-Coupled Argon Plasma Atomic Emission SpectroscopyD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on WaterD3370 Practices for Sampling Water from Closed ConduitsD3557 Test Methods for Cadmium in WaterD3558 Test Methods for Cobalt in WaterD3559 Test Methods for Lead in WaterD3919 Practice for Measuring Trace Elements in Water byGraphite Furnace Atomic Absorption SpectrophotometryD4841 Practice for Estimation of Holding Time for WaterSamples Containing Organic and Inorganic ConstituentsD5673 Test Method for Elements in Water by InductivelyCoupled PlasmaMass SpectrometryD5810 Guide for Spiking into Aqueous SamplesD5847 Practice for Writing Quality Control Specificationsfor Standard Test Methods for Water Analysis3.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 continuing calibration blank,na solution containingno analytes(of interest)which is used to verify blank responseand freedom from carryover.1These test methods are under the jurisdiction of ASTM Committee D19 onWater and are the direct responsibility of Subcommittee D19.05 on InorganicConstituents in Water.Current edition approved June 1,2017.Published July 2017.Originally approvedin 1959.Last previous edition approved in 2012 as D1688 12.DOI:10.1520/D1688-17.2For 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.*A Summary of Changes section appears at the end of this standardCopyright 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 3.2.2 continuing calibration verification,na solution(orset of solutions)of known concentration used to verify freedomfrom excessive instrumental drift;the concentration is to coverthe range of calibration curve.3.2.3 total recoverable copper,na descriptive term relat-ing to the forms of copper recovered in the acid-digestionprocedure specified in this test standard.4.Sig