Standard Test Methods for Continuous Measurement of Ozone in Ambient, Workplace, and Indoor Atmospheres (Ultraviolet Absorption)

SIGNIFICANCE AND USE
Standards for O3  in the atmosphere have been promulgated by government authorities to protect the health and welfare of the public (5) and also for the protection of industrial workers (6).
Although O3  itself is a toxic material, in ambient air it is primarily the photochemical oxidants formed along with O3  in polluted air exposed to sunlight that cause smog symptoms such as lachrymation and burning eyes. Ozone is much more easily monitored than these photochemical oxidants and provides a good indication of their concentrations, and it is therefore the substance that is specified in air quality standards and regulations.
SCOPE
1.1 This test method describes the sampling and continuous analysis of ozone (O3) in the atmosphere at concentrations ranging from 10 to 2000 g/m3 of O3  in air (5 ppb(v) to 1 ppm(v)).
1.1.1 The test method is limited to applications by its sensitivity to interferences as described in Section 6. The interference sensitivities may limit its use for ambient and workplace atmospheres.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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09-Oct-2002
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ASTM D5156-02 - Standard Test Methods for Continuous Measurement of Ozone in Ambient, Workplace, and Indoor Atmospheres (Ultraviolet Absorption)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D5156–02
Standard Test Methods for
Continuous Measurement of Ozone in Ambient, Workplace,
1
and Indoor Atmospheres (Ultraviolet Absorption)
This standard is issued under the fixed designation D5156; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope D5110 Practice for Calibration of Ozone Monitors and
Certification of Ozone Transfer Standards Using Ultravio-
1.1 This test method describes the sampling and continuous
let Photometry
analysis of ozone (O ) in the atmosphere at concentrations
3
3
E380 Practice for Use of the International System of Units
ranging from 10 to 2000 µg/m of O in air (5 ppb(v) to 1
3
(SI) (the Modernized Metric System)
ppm(v)).
2.2 Other Documents:
1.1.1 The test method is limited to applications by its
EPA-600/4-76-005, Quality Assurance Handbook for Air
sensitivity to interferences as described in Section 6. The
3
Pollution Measurement Systems, Vol I, “Principles”
interference sensitivities may limit its use for ambient and
EPA-600/4-77-027a, Quality Assurance Handbook for Air
workplace atmospheres.
Pollution Measurement Systems, Vol II, “Ambient Air
1.2 The values stated in SI units are to be regarded as the
3
Specific Methods”
standard.
1.3 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Definitions—For definitions of terms used in this test
responsibility of the user of this standard to establish appro-
method,refertoTerminologyD1356.Anexplanationofunits,
priate safety and health practices and determine the applica-
symbols, and conversion factors may be found in Practice
bility of regulatory limitations prior to use.
E380.
2. Referenced Documents 3.2 Definitions of Terms Specific to This Standard:
2
3.2.1 absolute ultraviolet photometer—a photometer whose
2.1 ASTM Standards:
design, construction, and maintenance is such that it can
D1356 Terminology Relating to Sampling andAnalysis of
measure the absorbance caused by O mixtures without refer-
3
Atmospheres
ence to external absorption standards. Given a value for the
D1357 Practice for Planning the Sampling of theAmbient
absorptioncoefficientofO at253.7nmandareadingfromthe
3
Atmosphere
absolute ultraviolet photometer, O concentrations can be
D1914 Practice for Conversion Units and Factors Relating 3
calculatedwithaccuracy.Anabsoluteultravioletphotometeris
to Sampling and Analysis of Atmospheres
used only on prepared O mixtures free from interferences, as
D3249 Practice for General Ambient Air Analyzer Proce- 3
in calibration activity.
dures
3.2.2 primary standard—a standard directly defined and
D3631 Test Methods for Measuring Surface Atmospheric
established by some authority, against which all secondary
Pressure
standards are compared.
D3670 Guide for Determination of Precision and Bias of
3.2.3 secondary standard—a standard used as a means of
Methods of Committee D22
comparison, but checked against a primary standard.
D5011 Practices for Calibration of Ozone Monitors Using
3.2.4 standard—an accepted reference sample or device
Transfer Standards
used for establishing the measurement of a physical quantity.
3.2.5 transfer standard—a type of secondary standard; it is
1
These test methods are under the jurisdiction ofASTM Committee D22 onAir
a transportable device or apparatus that, together with opera-
Quality and is the direct responsibility of Subcommittee D22.03 on Ambient
tional procedures, is capable of reproducing pollutant concen-
Atmospheres and Source Emissions.
trations or producing acceptable assays of pollutant concentra-
Current edition approved Oct. 10, 2002. Published December 2002. Originally
published as D5156–91. Last previous edition D5156–95.
tions.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
3
the ASTM website. AvailablefromNationalTechnicalInformationService,Springfield,VA22161.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5156–02
4. Summary of Test Method 5.2 AlthoughO itselfisatoxicmaterial,inambientairitis
3
primarily the photochemical oxidants formed along with O in
3
4.1 Thistestmethodisbasedontheabsorptionofultraviolet
polluted air exposed to sunlight that cause smog symptoms
radiation at 253.7-nm wavelength by O and the use of an
3
such as lachrymation and burning eyes. Ozone is much more
ozo
...

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