ASTM D4532-2010 Standard Test Method for Respirable Dust in Workplace Atmospheres Using Cyclone Samplers《使用气旋采样器对工作场所环境中的可吸入尘埃进行采样的标准试验方法》.pdf
《ASTM D4532-2010 Standard Test Method for Respirable Dust in Workplace Atmospheres Using Cyclone Samplers《使用气旋采样器对工作场所环境中的可吸入尘埃进行采样的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D4532-2010 Standard Test Method for Respirable Dust in Workplace Atmospheres Using Cyclone Samplers《使用气旋采样器对工作场所环境中的可吸入尘埃进行采样的标准试验方法》.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D4532 10Standard Test Method forRespirable Dust in Workplace Atmospheres Using CycloneSamplers1This standard is issued under the fixed designation D4532; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、 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 test method provides details for the determinationof respirable dust concentration defined in terms of interna-tional
3、 convention in a range from 0.5 to 10 mg/m3inworkplace atmospheres. Specifics are given for sampling andanalysis using any one of a number of commercially availablecyclone samplers.1.2 The limitations on the test method are a minimumweight of 0.1 mg of dust on the filter, and a maximum loadingof 0.3
4、 mg/m2on the filter. The test method may be used athigher loadings if the flow rate can be maintained constant.1.3 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.4 This test method contains notes that are explanatory andare n
5、ot part of the mandatory requirements of the method.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 consult andestablish appropriate safety and health practices and deter-mine the applic
6、ability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D1356 Terminology Relating to Sampling and Analysis ofAtmospheresD3195 Practice for Rotameter CalibrationD5337 Practice for Flow Rate Calibration of PersonalSampling PumpsD6062 Guide for Personal Samplers of He
7、alth-RelatedAerosol FractionsD6552 Practice for Controlling and Characterizing Errors inWeighing Collected AerosolsD7440 Practice for Characterizing Uncertainty in Air Qual-ity MeasurementsE1 Specification for ASTM Liquid-in-Glass ThermometersE2251 Specification for Liquid-in-Glass ASTM Thermom-eter
8、s with Low-Hazard Precision Liquids2.2 Other International Standards:3ISO GUM Guide to the Expression of Uncertainty in Mea-surement, ISO Guide 98ISO 7708 Air QualityParticle Size Fraction Definitionsfor Health-Related SamplingISO 15767 Workplace AtmospheresControlling andCharacterizing Errors in We
9、ighing Collected AerosolEN 481 Workplace AtmospheresSize Fraction Defini-tions for the Measurement of Airborne Particles in theWorkplaceEN 13205 Workplace AtmospheresAssessment of Perfor-mance of Instruments for Measurement of Airborne Par-ticle Concentrations3. Terminology3.1 Definitions of Terms S
10、pecific to This Standard: Defini-tions of Terms Specific to This Standard (otherwise, consultD1356):3.1.1 respirable dust fractionfraction of airborne material(see Fig. 1) that would be collected by an idealized samplerfollowing the internationally-harmonized sampling conven-tions of ISO 7708, EN 48
11、1, Guide D6062, and Ref. (1).4NOTE 1The definition of the respirable dust fraction is a compromisebetween previous definitions, available samplers, and the fraction of dustthat penetrates to (rather than deposits in) the alveolar region of the lung.Local legal definitions may differ from the definit
12、ion adopted in this testmethod.3.2 For the terms and definitions related to characterizinguncertainty, see ISO GUM and Practice D7440.1This test method is under the jurisdiction of ASTM Committee D22 on AirQuality and is the direct responsibility of Subcommittee D22.04 on Workplace AirQuality.Curren
13、t edition approved April 1, 2010. Published June 2010. Originallyapproved in 1985. Last previous edition approved in 2003 as D4532 97(2003).DOI: 10.1520/D4532-10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book
14、of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4The boldface numbers in parentheses refer to the list of references at
15、the end ofthis test method.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Summary of Test Method4.1 Air is drawn through a cyclone or equivalent samplerfollowed by a tared filter, which is then re-weighed to deter-mine the mass o
16、f respirable dust. The air flow rate and time ofsampling provide the volume from which the dust mass wassampled. A time-weighted average respirable dust concentra-tion is calculated by dividing the mass by the total air volume.NOTE 2Samplers alternative to a cyclone (for example, foam-based orperson
17、al cascade impactors) may be used if they have desirable properties(for example, ease of use or uncertainty control) for intended application.Nevertheless, this test method is limited to cyclone samplers.5. Significance and Use5.1 This test method covers the determination of respirabledust concentra
18、tion in workplace atmospheres.5.2 Variations of the test method are in world-wide use fordetermining compliance relative to occupational exposurelevels.5.3 The test method may be used to verify dust controlmeasures.5.4 The test method may also be applied in research intohealth effects of dust in an
19、occupational setting.6. Apparatus6.1 Sampling UnitThe sampling unit consists of a pumpand a sampling head. The sampling head consists of a cycloneand a filter assembly.6.1.1 Evaluated Respirable Dust CycloneFor a list ofcommercially-available samplers and characteristics, see Re-search Report RR:D22
20、-1033.NOTE 3Bias relative to the international respirable dust criterion andthe dust size distribution being sampled (2-10) must be controlledsufficiently (see 13.2.4) for the application of intended use.6.1.2 Filter Cassette AssemblyFilter, filter-support pad,and filter cassette holder with suitabl
21、e caps. The filter shall benon-hygroscopic and a collection efficiency greater than 95 %for the dust of interest.NOTE 4As an example, most glass fiber and membrane filters withnominal pore size of 5 m will fulfill this requirement (11). PVC isrecommended for gravimetric analysis. The equilibrated fi
22、lter is pre-weighed by the user.NOTE 5It is preferable to use a conductive cassette because electro-static charge on the dust and a non-conductive cassette can result in asignificant bias (12-16). For controlling dust which may become attractedto the interior cassette walls, several filter holders e
23、quipped with ashielded respirable dust filter and cassette are commercially available,which may be weighed together with the filter.6.1.3 Personal Sampling PumpWith a flow rate uncer-tainty (see 13.2.1) less than 5 %. The pump pulsation ampli-tude may not exceed 620 % of the mean flow. The samplingp
24、ump is calibrated using Practice D5337.NOTE 6Cyclone samples collected with pulsating flow have beenshown to yield a negative bias as large as 22 % compared to samplescollected under steady flow (17).6.2 ChargerPump batteries shall be completely chargedwith an appropriate charger following the manuf
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