ASTM_D_7296_-_12.pdf

Designation:D729612Standard Practice forCollection of Settled Dust Samples Using Dry WipeSampling Methods for Subsequent Determination ofBeryllium and Compounds1This standard is issued under the fixed designation D7296;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 collection of settled dust con-taining beryllium and/or beryllium compounds on surfacesusing the dry wipe sampling method.These samples arecollected in a manner that will permit subsequent extractionand determination of beryllium and compounds in the wipesusing laboratory analysis techniques such as atomic spectrom-etry or fluorescence detection.1.2 This practice is limited in its scope to applications wherewetted wipe sampling(using Practice D6966)or vacuumsampling(using Practice D7144)is not physically feasible(forexample,if the surface to be wiped would be compromised byuse of wetted wipes).1.3 This practice does not address the sampling designcriteria(that is,sampling plan which includes the number andlocation of samples)that are used for clearance,hazardevaluation,risk assessment,and other purposes.To provide forvalid conclusions,sufficient numbers of samples should beobtained as directed by a sampling plan.Additional guidance isprovided in Guide D7659.1.4 This practice contains notes that are explanatory and arenot part of the mandatory requirements of this practice.1.5 The values stated in SI units are to be regarded asstandard.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 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:2D1356 Terminology Relating to Sampling and Analysis ofAtmospheresD4840 Guide for Sample Chain-of-Custody ProceduresD6966 Practice for Collection of Settled Dust SamplesUsing Wipe Sampling Methods for Subsequent Determi-nation of MetalsD7144 Practice for Collection of Surface Dust by Micro-vacuum Sampling for Subsequent Metals DeterminationD7659 Guide for Strategies for Surface Sampling of Metalsand Metalloids for Worker ProtectionD7707 Specification for Wipe Sampling Materials for Beryl-lium in Surface Dust3.Terminology3.1 For definitions of terms not listed here,see TerminologyD1356.3.2 Definitions:3.2.1 batch,na group of field or quality control(QC)samples that are collected or processed together at the sametime using the same reagents and equipment.3.2.2 sampling location,na specific area within a sam-pling site that is subjected to sample collection.D69663.2.2.1 DiscussionMultiple sampling locations are com-monly designated for a single sampling site(see 3.2.3).3.2.3 sampling site,na local geographic area that containsthe sampling locations(see 3.2.2).D69663.2.3.1 DiscussionA sampling site is generally limited toan area that is easily covered by walking.3.2.4 dry wipe,na suitable non-wetted wiping medium.1This practice is under the jurisdiction ofASTM Committee D22 on Air Qualityand is the direct responsibility of Subcommittee D22.04 on Workplace Air Quality.Current edition approved April 1,2012.Published May 2012.Originallyapproved in 2006.Last previous edition approved in 2006 as D7296 06.DOI:10.1520/D7296-12.2For 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 International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.4.1 DiscussionThese are to be distinguished fromwipes as defined in Practice D6966 and Specification D7707,which are wet wipes.3.3 Definitions of Terms Specific to This Standard:3.3.1 field blank,na dry wipe(see 3.2.4)that is exposed tothe same handling as field samples except that no sample iscollected(no surface is actually wiped).3.3.1.1 DiscussionAnalysis results from field blanks pro-vide information on the analyte background level in the drywipe,combined with the potential contamination experiencedby samples collected within the batch(see 3.2.1)resulting fromhandling.4.Summary of Practice4.1 Wipe samples of settled dust are collected on surfacesfrom areas of known dimensions with dry wipes satisfyingcertain requirements,using a specified pattern of wiping.4.2 The collected dry wipes are then ready for subsequentsample preparation and analysis for the measurement ofberyllium and compounds.5.Significance and Use5.1 This practice is intended for the collection of settled dustsamples for the subsequent measurement of beryllium andcompounds.The practice is meant for us