ASTM_D_3866_-_18.pdf

Designation:D386618Standard Test Methods forSilver in Water1This standard is issued under the fixed designation D3866;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.Scope*1.1 These test methods cover the atomic absorption deter-mination of silver in water.Section 34 on Quality Controlpertains to these test methods.Three test methods are given asfollows:ConcentrationRangeSectionsTest Method AAtomic AbsorptionChelation-ExtractionA1 to 10 g/L7 15Test Method BAtomic AbsorptionDirect0.1 to 10 mg/L16 24Test Method CAtomic AbsorptionGraphite Furnace1 to 25 g/L25 33ASimilar to that in Brown,E.,Skougstad,M.W.,and Fishman,M.J.,“Methods forCollection and Analysis of Water Samples for Dissolved Minerals and Gases,”Techniques of Water-Resources Investigations of the U.S.Geological Survey,Book 5,Chapter A1,1970,p.46.1.2 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.1.3 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.Specific precautionary statements are given in 11.5,11.12.1,13.8,and 22.1.1.4 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 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 ConduitsD3919 Practice for Measuring Trace Elements in Water byGraphite Furnace Atomic Absorption SpectrophotometryD4691 Practice for Measuring Elements in Water by FlameAtomic 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 laboratory control sample,na solution with a certi-fied concentration of silver.3.2.2 total recoverable silver,na descriptive term relatingto forms of silver that are determinable by the digestion methodthat is included in these test methods.4.Significance and Use4.1 The principal adverse effect of silver in the body iscosmetic.It causes argyria,a permanent,blue-gray discolor-ation of the skin,eyes,and mucous membranes.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 Feb.1,2018.Published March 2018.Originallyapproved in 1979.Last previous edition approved in 2012 as D3866 12.DOI:10.1520/D3866-18.2For 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 4.2 Relatively small quantities of silver are bactericidal orbacteriostatic and find limited use in both disinfection ofswimming pool waters and point-of-use water filters.4.3 ICP-MS or ICP-AES may also be appropriate but at ahigher instrument cost.See Test Methods D5673 and D1976.5.Purity of Reagents5.1 Reagent grade chemicals shall be used in all tests.Unless otherwise indicated,it is intended that all reagents shallconform to the specifications of the Committee on AnalyticalRe