ASTM D6785-2013 1250 Standard Test Method for Determination of Lead in Workplace Air Using Flame or Graphite Furnace Atomic Absorption Spectrometry《采用火焰或石墨炉原子吸收光谱法测定工作场所空气中铅含量的标准试验.pdf
《ASTM D6785-2013 1250 Standard Test Method for Determination of Lead in Workplace Air Using Flame or Graphite Furnace Atomic Absorption Spectrometry《采用火焰或石墨炉原子吸收光谱法测定工作场所空气中铅含量的标准试验.pdf》由会员分享,可在线阅读,更多相关《ASTM D6785-2013 1250 Standard Test Method for Determination of Lead in Workplace Air Using Flame or Graphite Furnace Atomic Absorption Spectrometry《采用火焰或石墨炉原子吸收光谱法测定工作场所空气中铅含量的标准试验.pdf(17页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D6785 13Standard Test Method forDetermination of Lead in Workplace Air Using Flame orGraphite Furnace Atomic Absorption Spectrometry1This standard is issued under the fixed designation D6785; 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 () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This standard specifies flame and graphite furnaceatomic absorption spectrometric me
3、thods for the determinationof the time-weighted average mass concentration of particulatelead and lead compounds in workplace air.1.2 The method is applicable to personal sampling of theinhalable fraction of airborne particles, as defined in ISO 7708,and to static (area) sampling.1.3 The sample diss
4、olution procedure specifies hot plate ormicrowave digestion, or ultrasonic extraction (11.2). Thesample dissolution procedure is not effective for all leadcompounds (see Section 5). The use of an alternative, morevigorous dissolution procedure is necessary when it is desiredto extract lead from comp
5、ounds present in the test atmospherethat are insoluble using the dissolution procedures describedherein. For example if it is desired to determine silicate lead, ahydrofluoric acid dissolution procedure is required.1.4 The flame atomic absorption method is applicable to thedetermination of masses of
6、 approximately 1 to 200 g of leadper sample, without dilution (1).2The graphite furnace atomicabsorption method is applicable to the determination of massesof approximately 0.01 to 0.5 g of lead per sample, withoutdilution (1).1.5 The ultrasonic extraction procedure has been validatedfor the determi
7、nation of masses of approximately 20 to 100 gof lead per sample, for laboratory-generated lead fume air filtersamples (2).1.6 The concentration range for lead in air for which thisprocedure is applicable is determined in part by the samplingprocedure selected by the user (see Section 10).1.7 Anions
8、that form precipitates with lead may interfere,but this potential interference is overcome by the addition ofthe disodium salt of ethylenediamine tetraacetic acid (EDTA)when necessary.1.8 The values stated in SI units are to be regarded as thestandard. No other units of measurement are included in t
9、hisstandard.1.9 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.
10、Referenced Documents2.1 ASTM Standards:3D1193 Specification for Reagent WaterD1356 Terminology Relating to Sampling and Analysis ofAtmospheresD3195 Practice for Rotameter CalibrationD4840 Guide for Sample Chain-of-Custody ProceduresD7035 Test Method for Determination of Metals and Met-alloids in Air
11、borne Particulate Matter by InductivelyCoupled Plasma Atomic Emission Spectrometry (ICP-AES)E882 Guide for Accountability and Quality Control in theChemical Analysis LaboratoryE1370 Guide for Air Sampling Strategies for Worker andWorkplace ProtectionE1792 Specification for Wipe Sampling Materials fo
12、r Leadin Surface Dust2.2 Other Standards:4ISO 648 Laboratory GlasswareOne-Mark PipettesISO 1042 Laboratory GlasswareOne-Mark VolumetricFlasksISO 3534-1 StatisticsVocabulary and SymbolsPart 1:General Statistical Terms and Terms Used in Probability1This test method is under the jurisdiction of ASTM Co
13、mmittee D22 on AirQuality and is the direct responsibility of Subcommittee D22.04 on Workplace AirQuality.Current edition approved Oct. 1, 2013. Published October 2013. Originallyapproved in 2002. Last previous edition approved in 2008 as D6785 - 08. DOI:10.1520/D6785-13.2The boldface numbers in par
14、entheses refer to the list of references at the end ofthis standard.3For 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 w
15、ebsite.4Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1ISO 3585 Glass Plant, Pipelines and FittingsProperti
16、es ofBorosilicate Glass 3.3ISO 6879 Air QualityPerformance Characteristics andRelated Concepts For Air Quality MethodsISO 6955 Analytical Spectroscopic MethodsFlameEmission, Atomic Absorption, and AtomicFluorescenceVocabularyISO 7708 Particle Size Definitions for Health Related Sam-plingISO 15202-2
17、Workplace AirDetermination of Metals andMetalloids in Airborne Particulate Matter by InductivelyCoupled Plasma Atomic Emission SpectrometryPart 2:Sample PreparationISO 13137 Workplace AtmospheresPumps for PersonalSampling of Chemical and Biological AgentsRequirements and Test MethodsEN 482 Workplace
18、 ExposureGeneral Requirements forthe Performance of Procedures for the Measurement ofChemical AgentsEN 689 Workplace AtmospheresGuidance for the Assess-ment of Exposure to Chemical Agents for Comparisonwith Limit Values and Measurement StrategyEN 1232 Workplace AtmospheresPumps for PersonalSampling
19、of Chemical AgentsRequirements and TestEN 1540 Workplace AtmospheresTerminologyEN 12919 Workplace AtmospheresPumps for Samplingof Chemical Agents with a Volume Flow Rate of Over 5L/MinRequirements and Test MethodsEN 13205 Workplace AtmospheresAssessment of Perfor-mance of Instruments for Measurement
20、 of Airborne Par-ticle ConcentrationsEN ISO 8655-1, Piston-Operated Volumetric InstrumentsPart 1: Terminology, General Requirements and UserRecommendationsEN ISO 8655-2 Piston-Operated Volumetric InstrumentsPart 2: Piston PipettesEN ISO 8655-5 Piston-Operated Volumetric InstrumentsPart 5: Dispensers
21、EN ISO 8655-6 Piston-Operated Volumetric InstrumentsPart 6: Gravimetric Test Methods3. Terminology3.1 General DefinitionsFor definitions of other terms usedin this test method, refer to Terminology D1356.3.1.1 breathing zonethe space around the workers facefrom where he or she takes his or her breat
22、h. For technicalpurposes a more precise definition is as follows: hemisphere(generally accepted to be 0.3 m in radius) extending in front ofthe human face, centered on the midpoint of a line joining theears; the base of the hemisphere is a plane through this line, thetop of the head and the larynx.
23、The definition is not applicablewhen respiratory protective equipment is used. EN 15403.1.2 chemical agentany chemical element or compound,on its own or admixed as it occurs in the natural state or asproduced, used or released including release as waste, by anywork activity, whether or not produced
24、intentionally andwhether or not placed on the market. EN 15403.1.3 exposure (by inhalation)a situation in which achemical agent is present in air which is inhaled by a person.3.1.4 occupational exposure limit valuelimit of the time-weighted average of the concentration of a chemical agent inthe air
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