BS ISO 14965:2000

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.