<p>This International Standard describes a procedure for sampling and determining concentrations of total nonmethane</p>
<p>volatile organic compounds (NMVOC) in the ambient atmosphere.</p>
<p>This International Standard describes the collection of cumulative samples in passivated stainless steel canisters</p>
<p>and subsequent laboratory analysis. It describes a procedure for sampling in canisters at final pressures above</p>
<p>atmospheric pressure (referred to as pressurized sampling). It employs a cryogenic trapping procedure for</p>
<p>concentration of the NMVOC prior to analysis.</p>
<p>This International Standard describes the determination of the NMVOC by simple flame ionization detection (FID),</p>
<p>without the gas chromatographic columns and complex procedures necessary for species separation.</p>
<p>This International Standard is applicable to carbon concentrations in the range from 20 ppbC to 10 000 ppbC. See</p>
<p>12.4 for procedures for lowering the range.</p>
<p>Several variations to the method described in this International Standard are also possible; see clause 12.</p>
Registration number (WIID)
26111
Scope
<p>This International Standard describes a procedure for sampling and determining concentrations of total nonmethane</p>
<p>volatile organic compounds (NMVOC) in the ambient atmosphere.</p>
<p>This International Standard describes the collection of cumulative samples in passivated stainless steel canisters</p>
<p>and subsequent laboratory analysis. It describes a procedure for sampling in canisters at final pressures above</p>
<p>atmospheric pressure (referred to as pressurized sampling). It employs a cryogenic trapping procedure for</p>
<p>concentration of the NMVOC prior to analysis.</p>
<p>This International Standard describes the determination of the NMVOC by simple flame ionization detection (FID),</p>
<p>without the gas chromatographic columns and complex procedures necessary for species separation.</p>
<p>This International Standard is applicable to carbon concentrations in the range from 20 ppbC to 10 000 ppbC. See</p>
<p>12.4 for procedures for lowering the range.</p>
<p>Several variations to the method described in this International Standard are also possible; see clause 12.</p>
