Scand J Work Environ Health 1981;7(4):282-289 pdf
https://doi.org/10.5271/sjweh.2546 | Issue date: Dec 1981
Chemosorption sampling and analysis of formaldehyde in air. Influence on recovery during the simultaneous sampling of formaldehyde, phenol, furfural and furfuryl alcohol.
A method based on trapping formaldehyde on a 2,4-dinitrodinitrophenylhydrazine-coated porous polymer (Amberlite XAD-2) was evaluated for air sampling in occupational environments. The aldehyde is converted to its 2,4-dinitrophenylhydrazone on the adsorbent. The influence of some organic compounds which often occur together with formaldehyde-furfural, phenol and furfuryl alcohol--was studied. The results show that the method allows the sampling of formaldehyde in the range 0.01--1.0 mg/m3 of air, based on a 3-1 (15 min) sample and a coating of 1%. Furfural, phenol, and furfuryl alcohol do not interfere and may be conveniently sampled at the same time. Formaldehyde and furfural hydrazones were analyzed by high-performance liquid chromatography, phenol and furfuryl alcohol by gas chromatography.
Key terms 2,4-dinitrophenylhydrazone; air; amberlite XAD-2; analysis; chemosorption sampling; formaldehyde; formaldehyde alcohol; formaldehyde in air; furfural alcohol; furfuryl alcohol; gas chromatography; high-performance liquid chromatography; phenol alcohol; recovery; simultaneous sampling
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