1、Designation:D168717Standard Test Methods forChromium in Water1This standard is issued under the fixed designation D1687;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 y
2、ear 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 hexava-lent and total chromium in water.Sect
3、ion 34 on QualityControl pertains to these test methods.Three test methods areincluded as follows:Test MethodConcentrationRangeSectionsAPhotometric Diphenyl-carbohydrazide0.01 to 0.5 mg/L7 15BAtomic Absorption,Direct0.1 to 10 mg/L16 24CAtomic Absorption,GraphiteFurnace5 to 100 g/L25 331.2 Test Metho
4、d A is a photometric method that measuresdissolved hexavalent chromium only.Hexavalent chromiumcan also be determined by ion chromatography,see TestMethod D5257.Test Methods B and C are atomic absorptionmethods that are generally applicable to the determination ofdissolved or total recoverable chrom
5、ium in water withoutregard to valence state.ICP-MS or ICP-AES may also beappropriate but at a higher instrument cost.See Test MethodsD5673 and D1976.1.3 Test Method A has been used successfully with reagentgrade water Types I,II,and III,tap water,10%NaCl solution,treated water from a synthetic organ
6、ic industrial plant thatmeets National Pollution Discharge Elimination System(NPDES)permit requirements,and EPA-extraction procedureleachate water,process water,lake water,effluent treatment,that is,lime neutralization and precipitation of spent pickleliquor and associated rinse water from stainless
7、 steel pickling.Test Method C has been used successfully with reagent water,stock scrubber water,lake water,filtered tap water,river water,well water,production plant water,and a condensate from amedium BTU coal gasification process.Matrices used,exceptfor reagent water,are not available for Test Me
8、thod B.It is theusers responsibility to ensure the validity of these test methodsfor waters of untested matrices.1.4 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
9、are not considered standard.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 pri
10、or to use.For specific hazardstatements,see 4.2,20.3,and 20.8.1.1.6 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-mendati
11、ons 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 Reagen
12、t WaterD1688 Test Methods for Copper 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 Meth
13、ods 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 Spectrophotom
14、etry1These 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 D1
15、687 12.DOI:10.1520/D1687-17.2For 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
16、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 D4691 Practice for Measuring Elements in Water by
