1、Designation:D486117Standard Practice forSampling and Selection of Analytical Techniques forPesticides and Polychlorinated Biphenyls in Air1This standard is issued under the fixed designation D4861;the number immediately following the designation indicates the year oforiginal adoption or,in the case
2、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 sampling of air for a variety ofcommon pesticides and polychlorinated biph
3、enyls(PCBs)andprovides guidance on the selection of appropriate analyticalmeasurement methods.Other compounds such as polychlori-nated dibenzodioxins/furans,polybrominated biphenyls,poly-brominated diphenyl ethers,polycyclic aromatic hydrocarbons,and polychlorinated naphthalenes may be efficiently c
4、ollectedfrom air by this practice,but guidance on their analyticaldetermination is not covered by this practice.1.2 The sampling and analysis of PCBs in air can be morecomplicated than sampling PCBs in solid media(for example,soils,building materials)or liquids(for example,transformerfluids).PCBs in
5、 solid or liquid material are typically analyzedusing Aroclor2distillation groups in chromatograms.Incontrast,recent research has shown that analysis of PCBs in airsamples by GC/ECD has also been found to exhibit potentialuncertainties due to changes in the PCB patterns,differences inresponses in di
6、stillation groups,peak co-elutions and differ-ences in response factors within a homolog group(1,2).3Assuch it is recommended that PCBs in air not be quantified usingAroclorTM distillation groups.In addition,it is recommendedthat analysis of PCBs in air be done using GC/MS rather thanGC/ECD.Any ment
7、ion,to outdated practices for“Aroclor”and GC/ECD analysis of PCBs herein are retained solely forhistorical perspective.1.3 A complete listing of pesticides and other semivolatileorganic chemicals for which this practice has been tested isshown in Table 1.1.4 This practice is based on the collection
8、of chemicalsfrom air onto polyurethane foam(PUF)or a combination ofPUF and granular sorbent(for example,diphenyl oxide,styrene-divinylbenzene),or a granular sorbent alone.1.5 Thispracticeisapplicabletomulticomponentatmospheres,0.001 to 50-g/m3concentrations,and 4 to 24-hsampling periods.The limit of
9、 detection will depend on thenature of the analyte and the length of the sampling period.1.6 The analytical method(s)recommended will depend onthe specific chemical(s)sought,the concentration level,and thedegree of specificity required.1.7 The values stated in SI units are to be regarded asstandard.
10、No other units of measurement are included in thisstandard.1.8 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,health,and environmental practices and deter-mine th
11、e applicability of regulatory limitations prior to use.For specific hazards statements,see 10.24 and A1.1.1.9 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of Intern
12、ational Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:4D1193 Specification for Reagent WaterD1356 Terminology Relating to Sampling and Analysis ofAtmospheresD3686 Practice for Sampling At
13、mospheres to Collect Or-ganic Compound Vapors(Activated Charcoal Tube Ad-sorption Method)D3687 Practice for Analysis of Organic Compound VaporsCollected by the Activated Charcoal Tube AdsorptionMethodD4185 Test Method for Measurement of Metals in Work-place Atmospheres by Flame Atomic Absorption Spe
14、ctro-photometry1This practice is under the jurisdiction ofASTM Committee D22 on Air Qualityand is the direct responsibility of Subcommittee D22.05 on Indoor Air.Current edition approved Dec.15,2017.Published March 2018.Originallyapproved in 1991.Last previous edition approved in 2011 as D4861 11.DOI
15、:10.1520/D4861-17.2A trade name formerly used by Monsanto Corporation,Creve Coeur,MO.3The boldface numbers in parentheses refer to the list of references at the end ofthis standard.4For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.F
16、or 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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Techn
