1、Designation:E198298(Reapproved 2013)Standard Practice forOpen-Path Fourier Transform Infrared(OP/FT-IR)Monitoringof Gases and Vapors in Air1This standard is issued under the fixed designation E1982;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 procedures for using active open-path Fourier transform infrared(OP/FT-IR)mon
3、itors to mea-sure the concentrations of gases and vapors in air.Proceduresfor choosing the instrumental parameters,initially operatingthe instrument,addressing logistical concerns,making ancil-lary measurements,selecting the monitoring path,acquiringdata,analyzing the data,and performing quality con
4、trol on thedata are given.Because the logistics and data quality objectivesof each OP/FT-IR monitoring program will be unique,stan-dardized procedures for measuring the concentrations of spe-cific gases are not explicitly set forth in this practice.Instead,general procedures that are applicable to a
5、ll IR-active gasesand vapors are described.These procedures can be used todevelop standard operating procedures for specific OP/FT-IRmonitoring applications.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This practice do
6、es not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this practice to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standar
7、ds:2E131 Terminology Relating to Molecular SpectroscopyE168 Practices for General Techniques of Infrared Quanti-tative Analysis(Withdrawn 2015)3E1421 Practice for Describing and Measuring Performanceof Fourier Transform Mid-Infrared(FT-MIR)Spectrom-eters:Level Zero and Level One TestsE1655 Practices
8、 for Infrared Multivariate QuantitativeAnalysisE1685 Practice for Measuring the Change in Length ofFasteners Using the Ultrasonic Pulse-Echo Technique2.2 Other Documents:FT-IR Open-Path Monitoring Guidance Document4Compendium Method TO-16 Long-Path Open-Path FourierTransform Infrared Monitoring of A
9、tmospheric Gases53.Terminology3.1 For definitions of terms used in this practice relating togeneral molecular spectroscopy,refer to Terminology E131.3.2 For definitions of terms used in this practice relating toOP/FT-IR monitoring,refer to Guide E1685.3.3 For definitions of general terms relating to
10、 opticalremote sensing,refer to the FT-IR Open Path MonitoringGuidance Document.4.Significance and Use4.1 An OP/FT-IR monitor can,in principle,measure theconcentrations of all IR-active gases and vapors in the atmo-sphere.Detailed descriptions of OP/FT-IR systems and thefundamental aspects of their
11、operation are given in GuideE1685 and the FT-IR Open-Path Monitoring Guidance Docu-ment.A method for processing OP/FT-IR data to obtain theconcentrations of gases over a long,open path is given inCompendium Method TO-16.Applications of OP/FT-IR sys-tems include monitoring for gases and vapors in amb
12、ient air,along the perimeter of an industrial facility,at hazardous wastesites and landfills,in response to accidental chemical spills orreleases,and in workplace environments.1This practice is under the jurisdiction of ASTM Committee E13 on MolecularSpectroscopy and Separation Science and is the di
13、rect responsibility of Subcom-mittee E13.03 on Infrared and Near Infrared Spectroscopy.Current edition approved Jan.1,2013.Published January 2013.Originallyapproved in 1998.Last previous edition approved in 2007 as E1982 98(2007).DOI:10.1520/E1982-98R13.2For referenced ASTM standards,visit the ASTM
14、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.3The last approved version of this historical standard is referenced onwww.astm.org.4EPA/600/R-96/040,National T
15、echnical Information Service TechnologyAdministration,U.S.Department of Commerce,Springfield,VA22161,NTIS OrderNo.PB961704771NZ.5Compendium of Methods for the Determination of Toxic Organic Compoundsin Ambient Air,2nd Ed.,EPA/625/R-96/010b,Center for Environmental ResearchInfo.,Office of Research&De
16、velopment,U.S.Environmental Protection Agency,Cincinnati,OH 45268,Jan.1997.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Instrumental Parameters5.1 Several instrumental parameters must be chosen beforedata are collected with an OP/FT-IR system.These parametersinclude the measurement time,spectral resolution,apodizationfunction,and zero filling factor.In some cases,the choice ofthese parameters might be limited by the parameters us
