1、Designation:E172616Standard Practice forPreparation of Soil Samples by Hotplate Digestion forSubsequent Lead Analysis1This standard is issued under the fixed designation E1726;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year
2、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.Scope1.1 This practice covers drying,homogenization,and aciddigestion of soil samples and associated quality control(QC)samples u
3、sing a hot plate type method for the determination oflead using laboratory atomic spectrometry analysis techniquessuch as Inductively Coupled Plasma Atomic Emission Spec-trometry(ICP-AES),Flame Atomic Absorption Spectrometry(FAAS),and Graphite Furnace Atomic Absorption Spectrom-etry(GFAAS).1.2 This
4、practice is based on U.S.EPA SW 846,TestMethod 3050.1.3 This practice contains notes that are explanatory and arenot part of the mandatory requirements of this standard.1.4 The values stated in SI units are to be regarded asstandard.The values given in parentheses are mathematicalconversions to inch
5、-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 establish appro-priate safety and health practices and d
6、etermine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1129 Terminology Relating to WaterD1193 Specification for Reagent WaterE288 Specification for Laboratory Glass Volumetric FlasksE1605 Terminology Relating to Lead in Buildings2.2 U.S.Governm
7、ent Analytical Method:3U.S.EPA SW 846 Test Methods for Evaluating Solid WastePhysical/Chemical Methods2.3 ISO Standards:4ISO Guide 30 Terms and Definitions Used in Connectionwith Reference MaterialsISO 1042 Laboratory glasswareOne-mark volumetricflasksISO 8655 Piston-operated volumetric apparatus-Pa
8、rt 1:Terminology,general requirements and user recommen-dations3.Terminology3.1 Definitions:For definitions of terms relating to thepreparation of dried paint samples that are not given here,referto Terminology D1129 or Terminology E1605.3.1.1 batcha group of field or quality control samples thatare
9、 processed together using the same reagents and equipment.3.1.2 digestatethe acidified aqueous solution that resultsfrom digestion of the sample.3.1.3 digestionhigh temperature sample preparation pro-cess that involves chemical breakdown to solubilize targetedanalytes present in a sample,to result i
10、n an acidified aqueoussolution called the digestate.3.1.4 method blanka sample,devoid of analyte,that isanalyzyed to determine its contribution to the total blank(background)reading.3.1.5 non-spiked samplea sample,devoid of analyte,thatis targeted for addition of analyte but is not fortified with al
11、ltarget analytes prior to sample preparation.3.1.5.1 DiscussionAnalysis results for this sample areused to correct for background levels in the blank medium thatis used for spiked and spiked duplicate samples.3.1.6 reagent blanka digestate that reflects the maximumtreatment given any one sample with
12、in a batch of samples,except that it has no sample placed initially into the digestion1This practice is under the jurisdiction of ASTM Committee E06 on Perfor-mance of Buildings and is the direct responsibility of Subcommittee E06.23 on LeadHazards Associated with Buildings.Current edition approved
13、Oct.1,2016.Published November 2016.Originallyapproved in 1995.Last previous edition approved in 2009 as E1726 01(2009).DOI:10.1520/E1726-16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume in
14、formation,refer to the standards Document Summary page onthe ASTM website.3Available from U.S.Government Publishing Office,732 N.Capitol St.,NW,Washington,DC 20401-0001,http:/www.gpo.gov.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.a
15、nsi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 vessel.(The same reagents and processing conditions that areapplied to field samples within a batch are also applied to thereagent blank.)3.1.6.1 DiscussionAnalysis results from this
16、 sample pro-vide information on the level of potential contaminationresulting from only laboratory sources that are experienced bysamples processed within the batch.3.1.7 reference material(certified reference material)(CRM)reference material accompanied by a certificate,oneor more of whose property values are certified by a procedurewhich establishes its traceability to an accurate realization ofthe unit in which the property values are expressed;eachcertified value is accomplished by an uncert
