ASTM_E_1645_-_01_2007.pdf

Designation:E164501(Reapproved 2007)Standard Practice forPreparation of Dried Paint Samples by Hotplate orMicrowave Digestion for Subsequent Lead Analysis1This standard is issued under the fixed designation E1645;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 indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the sample preparation proceduresfor paint samples that are collected during the assessment,management or control of lead hazards.1.2 This practice describes the digestion procedures using ahot plate or microwave oven or apparatus for paint samples thatare to be analyzed for lead content.1.3 This practice covers the general considerations forquantitative sample extraction for total recoverable lead indried paint samples(either bulk paint or paint powder)usinghot plate or microwave heating techniques,or both.1.4 The values stated in SI units are to be regarded as thestandard.1.5 This practice contains notes that are explanatory and notpart of the mandatory requirements of the standard.1.6 This practice is based on two NIOSH Methods,7082and 7105,and on an EPA standard operating procedure for leadin paint.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 and health practices and determine the applica-bility of regulatory limitations prior to use.For specificprecautionary statements,see 6.2.4.4 and 7.2.1.2.Referenced Documents2.1 ASTM Standards:2D1129 Terminology Relating to WaterD1193 Specification for Reagent WaterE1605 Terminology Relating to Lead in BuildingsE1729 Practice for Field Collection of Dried Paint Samplesfor Subsequent Lead Determination2.2 Other Documents:Environmental Protection Agency,Standard Operating Pro-cedures for Lead in Paint by Hotplate-or Microwave-based Acid Digestions and Atomic Absorption or Induc-tively Coupled Plasma Emission Spectrometry;U.S.EPA,Research Triangle Park,NC(1991).3(NTIS No.PB92114172)NIOSH Manual of Analytical Methods,P.M.Eller and M.E.Cassinelli,Eds.,4th ed.,Methods 7082 and 7105;Na-tional Institute for Occupational Safety&Health,Cincinnati,OH(1994).43.Terminology3.1 DefinitionsFor 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 processed together using the same reagents and equipment.3.1.2 digestatean acidified aqueous solution that resultsfrom digestion of the sample.3.1.3 digestionthe sample preparation process that solubi-lizes(extracts)targeted analytes present in the sample,andresults in an acidified aqueous solution called the digestate.3.1.4 extractionthe dissolution of target analytes from asolid matrix into a liquid form.During sample digestion,targetanalytes are extracted(solubilized)into an acid solution.3.1.5 method blanka sample,devoid of analyte,that isanalyzed to determine its contribution to the total blank(background)reading.3.1.6 non-spiked samplea sample,devoid of analyte,thatis targeted for addition of analyte but is not fortified with alltarget analytes prior to sample preparation.3.1.6.1 DiscussionAnalysis results for this sample areused to correct for background levels in the blank medium thatis used for spiked and spiked duplicate samples.1This 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 Aug.1,2007.Published August 2007.Originallyapproved in 1994.Last previous edition approved in 2001 as E1465 01 DOI:10.1520/E1645-01R07.2For 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 National Technical Information Service(NTIS),5285 PortRoyal Rd.,Springfield,VA 22161,http:/www.ntis.gov.4Available from NIOSH Publications,4676 Columbia Parkway,Cincinnati,OH45226;(800)35NIOSH.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.7 reagent blanka digestate that reflects the maximumtreatment given any one sample within a batch of samples,except that it has no sample placed initially into the digestionvessel.(The same reagents and processing conditions that areapplied to field samples within a batch are also applied to thereagent blank.)3.1.7.1 DiscussionAnalysis results from this sample pro-vide information on the level of potential contaminationresulting from only laboratory sources that are experienced bysamples processed w