Continuous fluorescence determination of formaldehyde in air

MOTYKA, Kamil and Pavel MIKUŠKA. Continuous fluorescence determination of formaldehyde in air. Analytica Chimica Acta. Amsterdam: Elsevier Science Publishers, 2004, vol. 518, 1-2, p. 13-20, 7 pp. ISSN 0003-2670.

Basic information

Original name

Continuous fluorescence determination of formaldehyde in air

Name in Czech

Kontinuální stanovení formaldehydu v ovzduší

Authors

MOTYKA, Kamil and Pavel MIKUŠKA

Edition

Analytica Chimica Acta, Amsterdam, Elsevier Science Publishers, 2004, 0003-2670

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Other information

Type of outcome

Článek v odborném periodiku

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 2.588

Organization unit

Faculty of Science

UT WoS

000223005700006

Keywords in English

fluorescence; formaldehyde; wet denuder; air

Tags

Air, fluorescence, formaldehyde, wet denuder

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Abstract

V originále

A flow method for the determination of formaldehyde in air is presented. A cylindrical wet effluent diffusion denuder is used for continuous collection of formaldehyde from air into deionized water as denuder liquid. Collected formaldehyde in the denuder concentrate is on-line determined by fluorescence 2,4-pentandione method. The collection efficiency of HCHO is quantitative at the air flow rate of 0.5 l min-1. The calibration graph is linear in the range 2-300 microg m-3 HCHO. The limit of detection is 1.6 microg m-3 HCHO. The relative standard deviations for 210-6 M HCHO and 110-5 M HCHO are 2.57 % and 1.06 %, respectively. Acetaldehyde, acetone, formic acid, acetic acid and NO2 and O3 do not interfere. Interference of SO2 is suppressed. Analysis time is 2.5 min.