1、Designation:D430918Standard Practice forSample Digestion Using Closed Vessel Microwave HeatingTechnique for the Determination of Total Metals in Water1This standard is issued under the fixed designation D4309;the number immediately following the designation indicates the year oforiginal adoption or,
2、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 This practice covers the general considerations forquantitative sample digestion for t
3、otal metals in water usingclosed vessel microwave heating technique.This practice isapplicable to surface,saline,domestic,and industrial waste-water.1.2 Because of the differences among various makes andmodels of satisfactory instruments,no detailed operating in-structions can be provided.Instead,th
4、e analyst should followthe instructions provided by the manufacturer of the particularinstrument.1.3 This practice can be used with the following ASTMstandards,providing the user determines precision and biasbased on this digestion practice:Test Method D857,TestMethods D858,Test Methods D1068,Test M
5、ethods D1687,Test Methods D1688,Test Methods D1691,Test MethodsD1886,Test Method D1976,Practices D3370,Test MethodsD3557,Test Methods D3559,Practice D3919,Test MethodD4190,Practice D4453,Practice D4691,and Test MethodD5673.1.4 The values stated in SI units are to be regarded asstandard.The values gi
6、ven in parentheses are mathematicalconversion to inch-pound units that are provided for informa-tion only and 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 est
7、ablish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.For specific hazard statements,see Section 9.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-izati
8、on 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:2D857 Test Method for Aluminum in WaterD858 Test Methods for
9、 Manganese in WaterD1068 Test Methods for Iron in WaterD1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD1687 Test Methods for Chromium in WaterD1688 Test Methods for Copper in WaterD1691 Test Methods for Zinc in WaterD1886 Test Methods for Nickel in WaterD1976 Test Method for
10、 Elements in Water by Inductively-Coupled Argon Plasma Atomic Emission SpectroscopyD3370 Practices for Sampling Water from Closed ConduitsD3557 Test Methods for Cadmium in WaterD3559 Test Methods for Lead in WaterD3856 Guide for Management Systems in LaboratoriesEngaged in Analysis of WaterD3919 Pra
11、ctice for Measuring Trace Elements in Water byGraphite Furnace Atomic Absorption SpectrophotometryD4190 Test Method for Elements in Water by Direct-CurrentPlasma Atomic Emission SpectroscopyD4453 Practice for Handling of High Purity Water SamplesD4691 Practice for Measuring Elements in Water by Flam
12、eAtomic Absorption SpectrophotometryD5673 Test Method for Elements in Water by InductivelyCoupled PlasmaMass Spectrometry2.2 U.S.Code of Federal Regulations:3CFR 1.030.10 Code of Federal Regulations,Volume 212.3 Federal Communications Commission Standard:3Code of Federal Regulations,Volume 47,FCC Ru
13、le Part 181This practice is under the jurisdiction of ASTM Committee D19 on Water andis the direct responsibility of Subcommittee D19.05 on Inorganic Constituents inWater.Current edition approved Feb.1,2018.Published May 2018.Originallyapproved in 1991.Last previous edition approved in 2012 as D4309
14、 12.DOI:10.1520/D4309-18.2For 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.3Available from U.S.Government Printing O
15、ffice,Superintendent ofDocuments,732 N.Capitol St.,NW,Washington,DC 20401-0001,http:/www.access.gpo.gov.*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 stan
16、dard 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 2.4 U.S.EPA Method:4U.S.EPA Method:Methods for Chemical Analysis of Waterand WasteMarch 1979,“Total Metals Digestion Proce-dure”4.1.3,page Metals 6U.S.EPA Method:SW 846 Method 3015 Microwave As-sisted Acid D
