ASTM E697-96(2006)

Standard Practice for Use of Electron-Capture Detectors in Gas Chromatography

ABSTRACT
This practice describes the principles, construction details, operation and performance, and terms and relationships for the use of an electron-capture detector (ECD) as the detection component of a complete gas chromatographic system.
SCOPE
1.1 This practice covers the use of an electron-capture detector (ECD) as the detection component of a gas chromatographic system.
1.2 This practice is intended to describe the operation and performance of the ECD as a guide for its use in a complete chromatographic system.
1.3 For general gas chromatographic procedures, Practice E 260 or Practice E 1510 should be followed except where specific changes are recommended in this practice for use of an ECD. For a definition of gas chromatography and its various terms, see Practice E 355. These standards also describe the performance of the detector in terms which the analyst can use to predict overall system performance when the detector is coupled to the column and other chromatographic components.
1.4 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. For specific safety information, see Section .

General Information

• Status: Historical
• Publication Date: 28-Feb-2006
• ICS: 71.040.50 - Physicochemical methods of analysis
• Technical Committee: E13 - Molecular Spectroscopy and Separation Science
• Drafting Committee: E13.19 - Separation Science

Relations

• Replaces: ASTM E697-96(2001) - Standard Practice for Use of Electron-Capture Detectors in Gas Chromatography
• Effective Date: 01-Mar-2006
• Replaced By: ASTM E697-96(2011) - Standard Practice for Use of Electron-Capture Detectors in Gas Chromatography
• Effective Date: 01-Nov-2011
• Referred By: ASTM E260-96(2019) - Standard Practice for Packed Column Gas Chromatography
• Effective Date: 01-Mar-2006
• Referred By: ASTM E1747-95(2019) - Standard Guide for Purity of Carbon Dioxide Used in Supercritical Fluid Applications
• Effective Date: 01-Mar-2006
• Referred By: ASTM D5483-21 - Standard Test Method for Oxidation Induction Time of Lubricating Greases by Pressure Differential Scanning Calorimetry
• Effective Date: 01-Mar-2006
• Referred By: ASTM D6160-21 - Standard Test Method for Determination of Polychlorinated Biphenyls (PCBs) in Waste Materials by Gas Chromatography
• Effective Date: 01-Mar-2006

Standards Content (Sample)

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:E697–96(Reapproved 2006)
Standard Practice for
1
Use of Electron-Capture Detectors in Gas Chromatography
This standard is issued under the fixed designation E697; 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 (´) indicates an editorial change since the last revision or reapproval.
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1. Scope Consumer Locations
3
CGAP-9 The Inert Gases: Argon, Nitrogen and Helium
1.1 This practice covers the use of an electron-capture
CGAV-7 Standard Method of Determining CylinderValve
detector (ECD) as the detection component of a gas chromato-
3
Outlet Connections for Industrial Gas Mixtures
graphic system.
3
CGAP-12 Safe Handling of Cryogenic Liquids
1.2 This practice is intended to describe the operation and
3
HB-3 Handbook of Compressed Gases
performance of the ECD as a guide for its use in a complete
2.3 Federal Standard:
chromatographic system.
4
Title 10, Code of Federal Regulations, Part 20
1.3 For general gas chromatographic procedures, Practice
E260 or Practice E1510 should be followed except where
3. Hazards
specificchangesarerecommendedinthispracticeforuseofan
3.1 Gas Handling Safety—Thesafehandlingofcompressed
ECD. For a definition of gas chromatography and its various
gases and cryogenic liquids for use in chromatography is the
terms, see Practice E355. These standards also describe the
responsibility of every laboratory. The Compressed GasAsso-
performance of the detector in terms which the analyst can use
ciation (CGA), a member group of specialty and bulk gas
to predict overall system performance when the detector is
suppliers, publishes the following guidelines to assist the
coupledtothecolumnandotherchromatographiccomponents.
laboratory chemist to establish a safe work environment.
1.4 This standard does not purport to address all of the
Applicable CGA publications include: CGAP-1, CGAG-5.4,
safety concerns, if any, associated with its use. It is the
CGAP-9, CGAV-7, CGAP-12, and HB-3.
responsibility of the user of this standard to establish appro-
3.2 The electron capture detector contains a radioactive
priate safety and health practices and determine the applica-
isotope that emits b-particles into the gas flowing through the
bility of regulatory limitations prior to use. For specific safety
detector. The gas effluent of the detector must be vented to a
information, see Section 3.
fumehoodtopreventpossibleradioactivecontaminationinthe
2. Referenced Documents laboratory. Venting must conform to Title 10, Code of Federal
2 Regulations, Part 20 and Appendix B.
2.1 ASTM Standards:
E260 Practice for Packed Column Gas Chromatography
4. Principles of Electron Capture Detection
E355 Practice for Gas Chromatography Terms and Rela-
4.1 The ECD is an ionizating detector comprising a source
tionships
of thermal electrons inside a reaction/detection chamber filled
E1510 Practice for Installing Fused Silica Open Tubular
with an appropriate reagent gas. In packed column GC the
Capillary Columns in Gas Chromatographs
carrier gas generally fullfills the requirements of the reagent
2.2 CGA Standards:
gas. In capillary column GC the make-up gas acts as the
CGAP-1 Safe Handling of Compressed Gases in Contain-
3 reagent gas and also sweeps the detector volume in order to
ers
pass column eluate efficiently through the detector. While the
CGAG-5.4 Standard for Hydrogen Piping Systems at
carrier/reagent gas flows through the chamber the device
detectsthosecompoundsenteringthechamberthatarecapable
of reacting with the thermal electrons to form negative ions.
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This practice is under the jurisdiction ofASTM Committee E13 on Molecular
These electron capturing reactions cause a decrease in the
Spectrography and is the direct responsibility of Subcommittee E13.19 on Chro-
matography.
concentration of free electrons in the chamber. The detector
Current edition approved March 1, 2006. Published March 2006. Originally
response is therefore a measure of the concentration and the
approved in 1979. Last previous edition approved in 2001 as E697–96(2001).
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change in concentration of electrons (1-17).
DOI: 10.1520/E0697-96R06.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
4
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the ASTM website. 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401.
3 5
Available from Compressed Gas Association (CGA), 1725 Jefferson Davis The boldface numbers in parentheses refer to a list of references at the end of
Hwy., Suite 1004, Arlington, VA 22202-4102. this p
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