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A fast method for the measurement of sub-ppb levels of naphthalene in ambient air is presented. Ambient air samples are collected by pumping air (2 or 3 litres) through adsorbent tubes filled with Tenax-TA. Analysis is performed by thermal desorption and cryofocusing, followed by capillary gas chromatography and mass spectrometric detection. The limit of detection is 0.1 ng of napthalene; recoveries based on thermally desorbed napthalene reached nearly 100 %. Up to 45 minutes are required for sampling and analysis of napthalene in air; this allows application of the procedure for monitoring this compound in urban and (due to the low limit of detection) in rural areas.

Additional information

Authors: BRUSSOL C, JRC Ispra (IT);DUANE M, JRC Ispra (IT);KOTZIAS D, JRC Ispra (IT)
Bibliographic Reference: Paper presented: 15th International Symposium on Polycyclic Aromatics, Belgirate (IT), September 19-22, 1995
Availability: Available from (1) as Paper EN 39010 ORA
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