Phenol interference in the mercury-free pararosaniline method and the chromotropic acid method for formaldehyde

Journal Article · Tue May 01 04:00:00 UTC 1984 · Am. Ind. Hyg. Assoc. J.; (United States)

DOI:https://doi.org/10.1080/15298668491399866· OSTI ID:6383038

Knox, S E; Que Hee, S S

The modified pararosaniline method for formaldehyde which uses no poisonous mercury reagent is not affected by phenol/formaldehyde ratios ranging from 1 to 100, whereas such ratios caused almost total inhibition of the chromotropic acid method, even if water, 1% sodium bisulfite or 0.01 N H/sub 2/SO/sub 4/ were used to simulate different collection media. No influence of phenol also occurred even for 11 days of storage at room temperature before analysis.

• Research Organization: Univ. of Cincinnati Medical Center, OH
• OSTI ID: 6383038
• Journal Information: Am. Ind. Hyg. Assoc. J.; (United States), Journal Name: Am. Ind. Hyg. Assoc. J.; (United States) Vol. 45:5; ISSN AIHAA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION MONITORING
ALDEHYDES
AMINES
ANILINE
AROMATICS
CHEMICAL ANALYSIS
CHROMOTROPIC ACID
FLUIDS
FORMALDEHYDE
GASES
HYDROXY COMPOUNDS
MEASURING METHODS
MONITORING
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHENOL
PHENOLS
QUANTITATIVE CHEMICAL ANALYSIS
QUANTITY RATIO
RESPONSE MODIFYING FACTORS
SAMPLING
SULFONIC ACIDS
VAPORS