1、Designation:E 1973 99Standard Practice forCollection of Surface Dust by Air Sampling Pump VacuumTechnique for Subsequent Lead Determination1This standard is issued under the fixed designation E 1973;the number immediately following the designation indicates the year oforiginal adoption or,in the cas
2、e 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 vacuum collection of surfacedusts onto filters using portable air sampl
3、ing pumps.Samplescollected in this manner allow for the subsequent digestion anddetermination of lead content by using atomic spectrometric(or equivalent)methods.The primary intended application issampling from soft surfaces.1.2 This practice allows for the determination of lead on aloading basis(mi
4、crogram of lead per area sampled).Lead mayalso be determined on a concentration basis(microgram of leadper gram of dust collected)where pre-weighed filters or filtercassettes are used.1.3 LimitationsDue to a number of physical factors inher-ent in the vacuum sampling method,analytical results forvac
5、uum dust samples are not likely to reflect the total dustcontained within the sampling area prior to sample collection.This practice generally will have a collection bias towardsmaller,less dense dust particles;however,the practice willgenerate leaded dust data that are consistent and comparablebetw
6、een operators performing vacuum collection using thispractice at a variety of locales and sites.21.4 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.5 This standard does not purport to address all of thesafety concerns,if any,
7、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:D 1356 Terminology Relating to Sampling and Analysis ofA
8、tmospheres3D 3195 Practice for Rotameter Calibration3E 1553 Practice for the Collection of Airborne ParticulateLead During Abatement and Construction Activities4E 1728 Practice for Field Collection of Settled DustSamples Using Wipe Sampling Methods for Lead Deter-mination by Atomic Spectrometry Tech
9、niques4,53.Terminology3.1DefinitionsFor definitions of terms relating to sam-pling and analysis of dust by means of the air sampling pumpvacuum technique,refer to Terminology D 1356.3.2 Description of Terms Specific to This Standard:3.2.1 air sampling pump,na portable air pump that isused to draw ai
10、r through a filter holder/nozzle assembly forvacuum collection of surface dust.An example would includea personal sampling pump.3.2.2 batch,na group of field or quality control samplesthat are collected in a similar environment and are processedtogether using the same reagents and equipment.3.2.3 co
11、llection nozzle,na piece of stainless steel oracrylic hard plastic tubing molded on one end(inlet)to form anarrow opening.The outlet end of the collection nozzle shall fitsnugly to flexible tubing,which connects it to a filter holder.Alternatively,a collection nozzle may consist simply of a pieceof
12、flexible tubing that is cut at a 45 angle at the inlet end.3.2.4 field blank,na sample that is handled in exactly thesame way that field samples are collected,except that no air isdrawn through it.3.2.5 filter holder,na plastic holder that supports the filtermedium upon which dust is collected.It is
13、 also often referredto as a filter cassette.3.2.6 sampling device(sampling assembly)a collectionnozzle,filter holder,and air sampling pump assembly used tocollect surface dust on a filter.The collection nozzle(withtubing connector,if applicable)is attached to the inlet end ofthe filter holder.The fi
14、lter holder houses the filter,throughwhich air is drawn by using the air sampling pump.The filterholder is attached to the pump by flexible tubing.1This practice is under the jurisdiction ofASTM Committee E-6 on Performanceof Buildings and is the direct responsibility of Subcommittee E06.23 on Lead
15、PaintAbatement.Current edition approved Oct.10,1999.Published January 2000.Originallypublished as E 197398.Last previous edition E 197398.2Reynolds,S.J.,et al.,“Laboratory Comparison of Vacuum,OSHA,”and“HUDSampling Methods for Lead in Household Dust.”Am.Ind.Hyg.Assoc.,J.58:439446(1997).3Annual Book
16、of ASTM Standards,Vol 11.03.4Annual Book of ASTM Standards,Vol 04.11.5ASTM Standards on Lead-Based Paint Abatement in Buildings,ASTM,Conshohocken,PA,1994.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.3.2.7 surface dust,nsettled particulate that has beentransported to its present location by various means,such astransport through the air or tracking from other sources.4.Summary of Practice4.1 Samples of settled dust are collected fro
