<p>This part of ISO 16017 gives general guidance for the sampling and analysis of volatile organic compounds (VOCs)</p>
<p>in air. It is applicable to ambient, indoor and workplace atmospheres and the assessment of emissions from</p>
<p>materials in small- or full-scale test chambers.</p>
<p>This part of ISO 16017 is appropriate for a wide range of VOCs, including hydrocarbons, halogenated hydrocarbons,</p>
<p>esters, glycol ethers, ketones and alcohols. A number of sorbents 1) are recommended for the sampling of</p>
<p>these VOCs, each sorbent having a different range of applicability. Very polar compounds will generally require</p>
<p>derivatization, very low boiling compounds will only be partially retained by the sorbents, depending on ambient</p>
<p>temperature, and can only be estimated qualitatively. Semi-volatile compounds will be fully retained by the</p>
<p>sorbents, but may only be partially recovered. Compounds for which this part of ISO 16017 has been tested are</p>
<p>given in tables. This part of ISO 16017 may be applicable to compounds not listed, but in these cases it is</p>
<p>advisable to use a back-up tube containing the same or a stronger sorbent.</p>
<p>This part of ISO 16017 is applicable to the measurement of airborne vapours of VOCs in a concentration range of</p>
<p>approximately 0,5 _g/ m3 to 100 mg/m3 individual compound.</p>
<p>The upper limit of the useful range is set by the sorptive capacity of the sorbent used and by the linear dynamic</p>
<p>range of the gas chromatograph column and detector or by the sample-splitting capability of the analytical</p>
<p>instrumentation used. The sorptive capacity is measured as a breakthrough volume of air, which determines the</p>
<p>maximum air volume that shall not be exceeded when sampling.</p>
<p>The lower limit of the useful range depends on the noise level of the detector and on blank levels of analyte and/or</p>
<p>interfering artefacts on the sorbent tubes. Artefacts are typically sub-nanogram for well-conditioned Tenax GR and</p>
<p>carbonaceous sorbents such as Carbopack/Carbotrap type materials, carbonized molecular sieves and molecular</p>
<p>sieves such as Spherocarb, or pure charcoal; at low nanogram levels for Tenax TA and at 5 ng to 50 ng levels for</p>
<p>other porous polymers such as Chromosorbs and Porapaks. Sensitivity is typically limited to 0,5 _g/m_ for 10-litre</p>
<p>air samples with this latter group of sorbents because of their inherent high background.</p>
<p>The procedure specified in this part of ISO 16017 is applicable to low flowrate personal sampling pumps and gives</p>
<p>a time-weighted average result. It is not applicable to the measurement of instantaneous or short-term fluctuations</p>
<p>in concentration.</p>
<p>1) The sorbents listed in annex C and elsewhere in this International Standard are those known to perform as specified under</p>
<p>this part of ISO 16017. Each sorbent or product that is identified by a trademarked name is unique and has a sole manufacturer;</p>
<p>however, they are widely available from many different suppliers. This information is given for the convenience of users of this</p>
<p>part of ISO 16017 and does not constitute an endorsement by ISO of the product named. Equivalent products may be used if</p>
<p>they can be shown to lead to the same results.</p>
Registration number (WIID)
29194
Scope
<p>This part of ISO 16017 gives general guidance for the sampling and analysis of volatile organic compounds (VOCs)</p>
<p>in air. It is applicable to ambient, indoor and workplace atmospheres and the assessment of emissions from</p>
<p>materials in small- or full-scale test chambers.</p>
<p>This part of ISO 16017 is appropriate for a wide range of VOCs, including hydrocarbons, halogenated hydrocarbons,</p>
<p>esters, glycol ethers, ketones and alcohols. A number of sorbents 1) are recommended for the sampling of</p>
<p>these VOCs, each sorbent having a different range of applicability. Very polar compounds will generally require</p>
<p>derivatization, very low boiling compounds will only be partially retained by the sorbents, depending on ambient</p>
<p>temperature, and can only be estimated qualitatively. Semi-volatile compounds will be fully retained by the</p>
<p>sorbents, but may only be partially recovered. Compounds for which this part of ISO 16017 has been tested are</p>
<p>given in tables. This part of ISO 16017 may be applicable to compounds not listed, but in these cases it is</p>
<p>advisable to use a back-up tube containing the same or a stronger sorbent.</p>
<p>This part of ISO 16017 is applicable to the measurement of airborne vapours of VOCs in a concentration range of</p>
<p>approximately 0,5 _g/ m3 to 100 mg/m3 individual compound.</p>
<p>The upper limit of the useful range is set by the sorptive capacity of the sorbent used and by the linear dynamic</p>
<p>range of the gas chromatograph column and detector or by the sample-splitting capability of the analytical</p>
<p>instrumentation used. The sorptive capacity is measured as a breakthrough volume of air, which determines the</p>
<p>maximum air volume that shall not be exceeded when sampling.</p>
<p>The lower limit of the useful range depends on the noise level of the detector and on blank levels of analyte and/or</p>
<p>interfering artefacts on the sorbent tubes. Artefacts are typically sub-nanogram for well-conditioned Tenax GR and</p>
<p>carbonaceous sorbents such as Carbopack/Carbotrap type materials, carbonized molecular sieves and molecular</p>
<p>sieves such as Spherocarb, or pure charcoal; at low nanogram levels for Tenax TA and at 5 ng to 50 ng levels for</p>
<p>other porous polymers such as Chromosorbs and Porapaks. Sensitivity is typically limited to 0,5 _g/m_ for 10-litre</p>
<p>air samples with this latter group of sorbents because of their inherent high background.</p>
<p>The procedure specified in this part of ISO 16017 is applicable to low flowrate personal sampling pumps and gives</p>
<p>a time-weighted average result. It is not applicable to the measurement of instantaneous or short-term fluctuations</p>
<p>in concentration.</p>
<p>1) The sorbents listed in annex C and elsewhere in this International Standard are those known to perform as specified under</p>
<p>this part of ISO 16017. Each sorbent or product that is identified by a trademarked name is unique and has a sole manufacturer;</p>
<p>however, they are widely available from many different suppliers. This information is given for the convenience of users of this</p>
<p>part of ISO 16017 and does not constitute an endorsement by ISO of the product named. Equivalent products may be used if</p>
<p>they can be shown to lead to the same results.</p>
