1、Designation:D498119Standard Practice forScreening of Oxidizers in Waste1This standard is issued under the fixed designation D4981;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 indic
2、ates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice is intended for use prior to preparation ofwaste samples for organic analysis.Waste samples that haveoxidizing compounds may react with certain reagents
3、 in thelaboratory(for example,organic solvents).1.2 This practice is applicable to the analysis of wasteliquids,sludges,and solids.1.3 This practice can neither identify specific oxidizingcompounds nor measure concentrations.Since no acid or baseis added in this practice,potential oxidizers that req
4、uire thepresence of acid or base will not be detected by this practice.1.4 It is recommended that,prior to this test,waste samplesbe screened for water compatibility;see Practices D5058.1.5 This practice is designed and intended as a preliminarytest to complement quantitative analytical techniques t
5、hat maybe used to determine the presence of oxidizers in wastes.Thispractice offers the ability to screen waste for potentiallyhazardous reactions due to oxidizer content when the moresophisticated techniques are not available or the total wastecomposition is unknown.1.6 The values stated in SI unit
6、s are to be regarded asstandard.No other units of measurement are included in thisstandard.1.7 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 environme
7、ntal practices and deter-mine the applicability of regulatory limitations prior to use.1.8 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,G
8、uides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterD5058 Practices for Compatibility of Screening Analysis ofWasteD5681 Terminology for Waste and Waste Management2.2
9、 EPA Standard:3SW-846 Test Method 1040 Test Method for Oxidizing Solids3.Terminology3.1 For definitions of terms used in this practice,refer toTerminology D5681.3.2 Definitions of Terms Specific to This Standard:3.2.1 screening analysisa preliminary qualitative or semi-quantitative test that is desi
10、gned to efficiently give the userspecific information about a waste that will aid in determiningwaste identification,process compatibility,and safety in han-dling.4.Summary of Practice4.1 A small portion of the sample is placed onto a strip ofpotassium iodide(KI)starch paper.The blue color,which is
11、theresult of oxidizing the potassium iodide to iodine(I2)in thepresence of starch,indicates a positive test for oxidizers.5.Significance and Use5.1 This practice is intended for use by those in wastemanagement industries to avoid potentially harmful reactionsdue to oxidizing compounds in wastes.6.In
12、terferences6.1 Materials that mask the KI starch paper(for example,oils,syrups,etc.)prevent reaction with the test paper or visualdetection of a color change.1This practice is under the jurisdiction of ASTM Committee D34 on WasteManagement and is the direct responsibility of Subcommittee D34.01.05 o
13、nScreening Methods.Current edition approved Feb.1,2019.Published February 2019.Originallyapproved in 1989.Last previous edition approved in 2012 as D4981 12.DOI:10.1520/D4981-19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For
14、Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from United States Environmental ProtectionAgency(EPA),WilliamJefferson Clinton Bldg.,1200 Pennsylvania Ave.,NW,Washington,DC 20460,http:/www.epa.gov.Copyright ASTM Internationa
15、l,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 Re
16、commendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 6.2 Samples or slurries of samples that are already darklycolored prior to applying a test portion to the KI starch papercan give false results.6.3 Oxidizers such as ferric salts may not oxidize organics;however,they may show positive reactions with KI.NOTE1All materials that potentially cause interferences as,forexample,those listed above should be investigated using a more rigorousprocedure such as
