1、Designation:D6323121Standard Guide forLaboratory Subsampling of Media Related to WasteManagement Activities1This standard is issued under the fixed designation D6323;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last re
2、vision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTESections 6.1.4.2 and 6.1.7 were editorially corrected in February 2013.1.Scope1.1 This guide covers common techniques for obtainingrepre
3、sentative subsamples from a sample received at a labora-tory for analysis.These samples may include solids,sludges,liquids,or multilayered liquids(with or without solids).1.2 The procedures and techniques discussed in this guidedepend upon the sample matrix,the type of sample preparationand analysis
4、 performed,the characteristic(s)of interest,and theproject specific instructions or data quality objectives.1.3 This guide includes several sample homogenizationtechniques,including mixing and grinding,as well as informa-tion on how to obtain a specimen or split laboratory samples.1.4 This guide doe
5、s not apply to air or gas sampling.1.5 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of
6、this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C702 Practice for Reducing Samples ofAggregate to TestingSizeC859 Terminology Relating to Nuclear MaterialsD346 Practi
7、ce for Collection and Preparation of CokeSamples for Laboratory AnalysisD2234/D2234M Practice for Collection of a Gross Sampleof CoalD4547 Guide for Sampling Waste and Soils for VolatileOrganic CompoundsD4823 Guide for Core Sampling Submerged,Unconsoli-dated SedimentsD5681 Terminology for Waste and
8、Waste ManagementD5743 Practice for Sampling Single or MultilayeredLiquids,With or Without Solids,in Drums or SimilarContainersD5792 Practice for Generation of Environmental Data Re-lated to Waste Management Activities:Development ofData Quality ObjectivesD5956 Guide for Sampling Strategies for Heter
9、ogeneousWastesD6051 Guide for Composite Sampling and Field Subsam-pling for Environmental Waste Management Activities3.Terminology3.1 DefinitionsFor definitions of terms used in this guide,refer to Terminology D5681.3.2 Definitions of Terms Specific to This Standard:3.2.1 contaminant unit,nthe large
10、st particle size thatcontains the contaminant of interest3.2.1.1 DiscussionThe contaminant of concern,as definedby the project objectives,may be associated with all theparticle sizes or associated with only a certain particle size orsizes.At the time of waste generation,discharge or spill,theparticl
11、e size of this contaminant of concern may be on theatomic or molecular scale,such as solvent spill into sand,or amacro scale,such as lead acid batteries at a dump site.Thecontaminant unit may also be in-between these scales,such aslead particles encapsulated in coal.In practice,the contaminantunit m
12、ay change if the contaminant unit becomes absorbed oradsorbed to particles larger than the contaminant unit.It is thesize of the contaminant unit at the time of subsampling,not atthe time of generation,that is referred to as the contaminantunit.1This test method is under the jurisdiction of ASTM Com
13、mittee D34 on WasteManagement and is the direct responsibility of Subcommittee D34.01.01 onPlanning for Sampling.Current edition approved Nov.1,2012.Published December 2012.Originallyapproved in 1998.Last previous edition approved in 2003 as D6323 98(2003),which was withdrawn in June 2012 and reinst
14、ated in August 2012.DOI:10.1520/D6323-12E01.2For 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.Copyright ASTM Interna
15、tional,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.2 maximum allowable particle size,nthe largest linealdimension of a samples individual particles accepted for agiven sample mass.3.2.2.1 DiscussionThe maximum allowable particle sizeis sometimes referred to a
16、s the allowable particle size.Asimplemethod of measurement is a sieve.3.2.3 multilayered sample,na sample consisting of two ormore clearly differentiated components.3.2.3.1 DiscussionMultilayered samples are those withtwo or more distinct visual layers of material.These layers maybe the result of differences in density,such as liquid/liquidlayers(for example,chlorinated solvents and water,water andoil),liquid/solid layers(for example,sludge),solid/solid layers(for example,small rocks and large r
