Interference by chemicals in the determination of formaldehyde

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Environment International; (USA)

DOI:https://doi.org/10.1016/0160-4120(89)90070-6· OSTI ID:6705802

van der Wal, J F ^[1]; Korf, Ch ^[2]; Kuypers, A T.J.M. ^[3]; Neele, J ^[4]

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1. TNO Division of Technology for Society, Delft (Netherlands)
2. Centre for Surface Technology COT, Haarlem (Netherlands)
3. DSM Division Chemical Products, Geleen (Netherlands)
4. RIVM Laboratory for Inorganic Chemistry, Bilthoven (Netherlands)

Twenty-three chemicals were investigated for their interference in the determination of formaldehyde in ambient air by three colorimetric methods: the pararosaniline, acetylacetone, and chromotropic acid methods. Interlaboratory comparisons by four laboratories were involved in this study. All three methods suffer from interference by many chemicals when applied to aqueous formaldehyde solutions, the chromotropic acid by most (twelve) chemicals. The experiments were continued in the gaseous phase with the pararosaniline and the acetylacetone method. Interference is much less when formaldehyde and chemicals are sampled as gases. A deviation of more than 10% is found only for SO{sub 2} in the acetylacetone method.

• OSTI ID: 6705802
• Journal Information: Environment International; (USA), Journal Name: Environment International; (USA) Vol. 15:1-6; ISSN 0160-4120; ISSN ENVID
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION
ALDEHYDES
AQUEOUS SOLUTIONS
DISPERSIONS
FORMALDEHYDE
INDOOR AIR POLLUTION
INTERFERENCE
INTERLABORATORY COMPARISONS
MEASURING METHODS
MIXTURES
ORGANIC COMPOUNDS
POLLUTION
SOLUTIONS