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BS ISO 14965:2000

Current

Current

The latest, up-to-date edition.

Ambient air. Determination of total non-methane organic compounds. Cryogenic preconcentration and direct flame ionization detection method

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

15-05-2000

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Description of the method
    4.1 Sampling
    4.2 Analysis
5 Interferences
6 Apparatus
    6.1 Sample collection system (Figure 1)
    6.2 Sample-canister cleaning system (Figure 2)
    6.3 Analytical system (Figure 3)
7 Reagents and materials
8 Canister cleanup and preparation
9 Sampling
    9.1 General
    9.2 Sample collection
10 Sample analysis
    10.1 Assembly
    10.2 Analytical system leak check
    10.3 Sample volume determination
    10.4 Analytical system dynamic calibration
    10.5 Analysis procedure (see Figure 3)
11 Performance criteria and Quality Assurance
    11.1 General
    11.2 Standard operating procedure (SOP)
    11.3 Method sensitivity,accuracy and precision
12 Method modification
    12.1 Sample metering system
    12.2 Canister cleaning
    12.3 FID system
    12.4 Range
    12.5 Alternative cryogenic trapping and heating
          systems
    12.6 Sub-atmospheric pressure canister sampling
    12.7 Alternative sampling system
13 Precision and accuracy
    13.1 Precision
    13.2 Accuracy
Annex A (informative) Example of pressurized canister
        Sampling Data Sheet
Bibliography

Describes a method for sampling and determination of concentrations of total non-methane volatile organic compounds (NMVOC) in the ambient atmosphere.

This International Standard describes a procedure for sampling and determining concentrations of total non-methane volatile organic (NMVOC)in the ambient atmosphere.

This International Standard describes the collection of cumulative samples in passivated stainless steel canisters and subsequent laboratory analysis. It describes a procedure for sampling in canisters at final pressures above atmospheric pressure (referred to as pressurized sampling). It employs a cryogenic trapping procedure for concentration of the NMVOC prior to analysis.

This International Standard describes the determination of the NMVOC by simple flame ionization detection (FID), without the gas chromatographic columns and complex procedures necessary for species separation.

This International Standard is applicable to carbon concentrations in the range from 20 ppbC to 10 000 ppbC. See 12.4 for procedures for lowering the range.

Several variations to the method described in this International Standard are also possible; see clause 12.

Committee
EH/2/3
DevelopmentNote
Supersedes 96/562875 DC. (07/2005)
DocumentType
Standard
Pages
30
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
ISO 14965:2000 Identical

ISO/TR 4227:1989 Planning of ambient air quality monitoring
ISO 6145-4:2004 Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 4: Continuous syringe injection method
ISO 6145-3:1986 Gas analysis Preparation of calibration gas mixtures Dynamic volumetric methods Part 3: Periodic injections into a flowing gas stream
ISO 6145-1:2003 Gas analysis Preparation of calibration gas mixtures using dynamic volumetric methods Part 1: Methods of calibration
ISO 6141:2015 Gas analysis Contents of certificates for calibration gas mixtures
ISO 6145-6:2017 Gas analysis — Preparation of calibration gas mixtures using dynamic methods — Part 6: Critical flow orifices

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