Formaldehyde monitoring in urea-formaldehyde foam-insulated houses in St. John's, Newfoundland, Canada: Correlative field evaluation of a real-time infrared spectrophotometric method

Georghiou, Paris E.; Snow, David.

doi:10.1016/0160-4120(83)90086-7

Cited by 14 publications

(3 citation statements)

References 10 publications

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“…There is a large difference in concentrations of formaldehyde in the indoor air among different countries. It is observed that mean formaldehyde concentrations in Turkey were significantly higher than those observed in houses in Mexico, France, the UK, Finland, the US, Canada (without urea formaldehyde foam insulation (UFFI)) [2,[24][25][26][27][28], Sweden and Australia [13,29] and were similar to those observed in the Canadian homes (with UFFI) [30]. Higher formaldehyde concentrations in Turkish indoor environments could be explained by the presence of formaldehyde containing construction materials and smoking habits in indoor environments and the low ventilation flow rates in modern insulated apartments.…”

Section: Comparison Of Indoor Formaldehyde Concentrations With Other Studiesmentioning

confidence: 90%

Variations and Sources of Formaldehyde Levels in Residential Indoor Air in Ankara, Turkey

Menteşe

Güllü

2006

Indoor and Built Environment

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A study in Ankara was performed to examine any association between formaldehyde levels and housing characteristics. This involved collection of 309 air samples which were analysed using a colorimetric method. Formaldehyde concentrations ranged from 2.34 g·m 3 to 866.22 g·m 3 (median, 71.48 g·m 3). Formaldehyde levels were elevated in homes inhabited by at least one smoker and were correlated with indoor and outdoor temperature, age of house and density of plywood furniture. Sufficient sample numbers were collected to allow the data to be statistically divided into five daytime periods. These data suggest that the formaldehyde concentrations were generally slightly higher in the afternoon. A simple mathematical model involving smoking activity has been developed for estimating the formaldehyde decay rates for two rooms in one of the typical background homes. When the windows and doors were closed, the formaldehyde concentrations in indoor air decreased within 10h to background concentrations, although this change depended on the room volume and the natural air exchange rate.

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Section: Comparison Of Indoor Formaldehyde Concentrations With Other Studiesmentioning

confidence: 90%

Variations and Sources of Formaldehyde Levels in Residential Indoor Air in Ankara, Turkey

Menteşe

Güllü

2006

Indoor and Built Environment

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“…Recently, there has been a great deal of concern regarding the potential carcinogenicity of formaldehyde (Yodaiken, 1981). Cells may be exposed to formaldehyde externally in sterilizing solutions, e.g., noxythiolin (Gidley & Sanders, 1983), or in the atmosphere, e.g., released from urea-formaldehyde resins (Georghiou et al, 1983). Formaldehyde is also released intracellularly in the detoxification of a number of methylamines (Krieter et al, 1985;Steenkamp, 1982) andmethanol (Goodman &Tephly, 1971).…”

Section: Discussionmentioning

confidence: 99%

Formaldehyde metabolism by Escherichia coli. Detection by in vivo carbon-13 NMR spectroscopy of S-(hydroxymethyl)glutathione as a transient intracellular intermediate

Mason¹,

Sanders²,

Crawford³

et al. 1986

Biochemistry

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In vivo 13C NMR has been used to detect the transient formation of S-(hydroxymethyl)glutathione (GSCH2OH) from glutathione and [13C]formaldehyde in Escherichia coli. Two-dimensional 1H-13C shift correlation was used to locate the chemical shift of the formaldehyde-derived protons of the adduct. The adduct GSCH2OH is formed by chemical reaction in the first few minutes after cells are challenged with formaldehyde and remains within the cell until consumed by metabolism.

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“…This has been a result of formaldehyde being released from a variety of sources including plywood, particleboard (2) and urea-formaldehyde foam insulation (LT.F.F.1.) (3). Formaldehyde in air can be analysed by several different chemicallybased procedures in which a chromogen is produced with formaldehyde-specific reagents.…”

Section: Introductionmentioning

confidence: 99%

The chemistry of the chromotropic acid method for the analysis of formaldehyde

Georghiou¹,

Ho²

1989

Can. J. Chem.

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Formaldehyde is present in the indoor air of many industrial and non-industrial environments. The procedure for its analysis which is commonly employed in North America is a NIOSH recommended one that uses chromotropic acid and concentrated sulphuric acid. The nature of the purple chromogen that is produced in the analytical procedure has not been fully understood until now. Using 1H and 13C nuclear magnetic resonance spectroscopic techniques and calibration line studies, evidence has been obtained to support the hypothesis that the chromogen has a mono-cationic dibenzoxanthylium structure and not a para,para-quinoidal one that is commonly cited. Keywords: Formaldehyde, formaldehyde analysis, chromotropic acid, chromogen, dibenzoxanthylium cation.

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Formaldehyde monitoring in urea-formaldehyde foam-insulated houses in St. John's, Newfoundland, Canada: Correlative field evaluation of a real-time infrared spectrophotometric method

Cited by 14 publications

References 10 publications

Variations and Sources of Formaldehyde Levels in Residential Indoor Air in Ankara, Turkey

Variations and Sources of Formaldehyde Levels in Residential Indoor Air in Ankara, Turkey

Formaldehyde metabolism by Escherichia coli. Detection by in vivo carbon-13 NMR spectroscopy of S-(hydroxymethyl)glutathione as a transient intracellular intermediate

The chemistry of the chromotropic acid method for the analysis of formaldehyde

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