1、Designation:E 2051 01Standard Practice for theDetermination of Lead in Paint,Settled Dust,Soil and AirParticulate by Field-Portable Electroanalysis1This standard is issued under the fixed designation E 2051;the number immediately following the designation indicates the year oforiginal adoption or,in
2、 the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the analysis of extracts of environ-mental samples for lead content
3、 using field-portable elec-troanalytical devices.1.2 Matrices of concern in this practice include paint,settleddust,soil,and air particulate.1.3 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
4、establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:D 1193 Specification for Reagent Water2D 5438 Practice for Collection of Floor Dust for ChemicalAnalysis3E 1553 Practice for Collection
5、of Airborne Particulate LeadDuring Abatement and Construction Activities3E 1605 Terminology Relating to Lead in Buildings4E 1613 Standard Test Method for Determination of Lead byInductively Coupled Plasma Atomic Emission Spectrom-etry(ICP-AES),Flame Atomic Absorption Spectrometry(FAAS),or Graphite F
6、urnace Atomic Absorption Spec-trometry(GFAAS)Techniques4E 1644 Practice for Hot Plate Digestion of Dust WipeSamples for the Determination of Lead4E 1645 Practice for Preparation of Dried Paint Samples byHotplate or Microwave Digestion for Subsequent LeadAnalysis4E 1726 Practice for Preparation of So
7、il Samples by HotplateDigestion for Subsequent Lead Analysis4E 1727 Practice for Field Collection of Soil Samples forLead Determination by Atomic Spectrometry Techniques4E 1728 Practice for Field Collection of Settled DustSamples Using Wipe Sampling Methods for Lead Deter-mination by Atomic Spectrom
8、etry Techniques4E 1729 Practice for Field Collection of Dried Paint Samplesfor Lead Determination by Atomic Spectrometry Tech-niques4E 1741 Practice for Preparation of Airborne ParticulateLead Samples Collected During Abatement and Construc-tion Activities for Subsequent Analysis by Atomic Spec-trom
9、etry4E 1775 Guide for Evaluating the Performance of On-SiteExtraction and Field-Portable Electrochemical or Spectro-photometric Analysis for Lead4E 1973 Practice for Collection of Surface Dust by AirSampling Pump Vacuum Technique for Subsequent LeadDetermination42.2Federal Standard:Title 40,CFR Part
10、 261,Appendix IIMethod 1311,ToxicCharacteristic Leaching Procedure(TCLP)53.Terminology3.1 DefinitionsFor definitions of terms relating to thispractice that do not appear in this section,refer to TerminologyE 1605.3.1.1 anodic stripping voltammetry(ASV)an electro-analytical technique in which the con
11、centration of analytemetal species dissolved in solution is determined in thefollowing manner.The analyte is first deposited(preconcen-trated)electrochemically by reducing the dissolved metal ionin solution to immobilized discharged metal species at amercury electrode surface,for instance,Pb2+(solut
12、ion)Pb(electrode).The metal is deposited in the form of an amalgam(with Hg)at an applied potential(voltage)that is negative ofthe standard oxidation potential of the metal/ion redox couple.After deposition for a given time period,the preconcentratedmetal species is then“stripped”from the mercury ele
13、ctrodesurface by applying a positive potential sweep,which causesanodic oxidation of the analyte metal species to dissolved ion;for example,Pb(Hg)Pb2+(soln).During the stripping step,the current associated with this reoxidation is measured.Thepeak current arising from the reoxidation of discharged,1
14、This practice is under the jurisdiction of ASTM Committee E06 on Perfor-mance of Buildings and is the direct responsibility of Subcommittee E06.23 on LeadPaint Abatement.Current edition approved May 10,2001.Published August 2001.Originallypublished as E 2051-99.Last previous edition E 2051-99.2Annua
15、l Book of ASTM Standards,Vol 11.01.3Annual Book of ASTM Standards,Vol 11.03.4Annual Book of ASTM Standards,Vol 04.11.5Available from U.S.Government Printing Office,Washington D.C.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.amalgamated
16、 metal species is proportional to the originalconcentration of dissolved analyte species over a wide range ofconcentrations.3.1.2 disposable electrodeIn anodic stripping voltamme-try and potentiometric stripping analysis,this is a solid-stateelectrode probe that is used once for electroanalysis and is thendiscarded.3.1.2.1 DiscussionSince solid state electrode responsemay change significantly after one analysis,results of addi-tional analyses with this electrode may not be reliable andcannot be
