Influence of temperature on formaldehyde emission parameters of dry building materials

Zhang, Yinping; Luo, Xiaomin; Wang, Xinke; Qian, Ke; Ren, Zhao Hui

doi:10.1016/j.atmosenv.2006.10.081

Cited by 175 publications

(88 citation statements)

References 14 publications

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“…Other developed studies also demonstrated that wood finishes quantity determine formaldehyde levels in indoor environments [9,[17][18][19][20][21]. Note that these same dwellings also showed higher temperatures, coincided with the results presented in previous studies, which showed that temperature is one of the environmental parameters that can influence formaldehyde offgassing [22,23].…”

Section: Discussionsupporting

confidence: 77%

“…This is supported by several authors, who report concentration differences between seasons and time of day in the same dwelling [24,26,27]. However, unlike other studies, environmental variables monitored (temperature and relative humidity) did not show the expected association with formaldehyde offgassing, which may possibly have resulted from other variables not investigated in this study such as ventilation conditions, indoor decoration and others [17,19,22,23,28,29].…”

Section: Discussioncontrasting

confidence: 49%

See 1 more Smart Citation

Formaldehyde in indoor air: a public health problem?

Viegas

Prista

2010

WIT Transactions on Ecology and the Environment

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Formaldehyde was the first air pollutant, which already in the 1970s emerged as a specifically non-industrial indoor air quality problem. Yet formaldehyde remained an indoor air quality issue and the formaldehyde level in residential indoor air is among the highest of any indoor air contaminant.Formaldehyde concentrations in 4 different indoor settings (schools, office buildings, new dwellings and occupied dwellings) in Portugal were measured using Photo Ionization Detection (PID) equipment (11,7 eV lamps).All the settings presented results higher than the reference value proposed by Portuguese legislation. Furthermore, occupied dwellings showed 3 units with results above the reference.We could conclude that formaldehyde presence is a reality in monitored indoor settings. Concentration levels are higher than the Portuguese reference value for indoor settings and these can indicate health problems for occupants.

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Section: Discussionsupporting

confidence: 77%

Section: Discussioncontrasting

confidence: 49%

Formaldehyde in indoor air: a public health problem?

Viegas

Prista

2010

WIT Transactions on Ecology and the Environment

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“…A few key studies have been carried out to measure the effect of temperature and relative humidity (RH) on formaldehyde emissions. Zhang et al 20 conducted chamber experiments to understand the influence of temperature on the partition coefficient and diffusion coefficient and found that the partition coefficient decreases with an increase in temperature, and the diffusion coefficient increased with an increase in temperature. However, the equilibrium concentration of formaldehyde increased with an increase in temperature.…”

Section: Technical Papermentioning

confidence: 99%

Effect of Temperature and Humidity on Formaldehyde Emissions in Temporary Housing Units

Parthasarathy

Maddalena

Russell

et al. 2011

Journal of the Air & Waste Management Association

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The effect of temperature and humidity on formaldehyde emissions from samples collected from temporary housing units (THUs) was studied. The THUs were supplied by the U.S. Federal Emergency Management Administration (FEMA) to families that lost their homes in Louisiana and Mississippi during the Hurricane Katrina and Rita disasters. On the basis of a previous study, four of the composite wood surface materials that dominated contributions to indoor formaldehyde were selected to analyze the effects of temperature and humidity on the emission factors. Humidity equilibration experiments were carried out on two of the samples to determine how long the samples take to equilibrate with the surrounding environmental conditions. Small chamber experiments were then conducted to measure emission factors for the four surface materials at various temperature and humidity conditions. The samples were analyzed for formaldehyde via high-performance liquid chromatography. The experiments showed that increases in temperature or humidity contributed to an increase in emission factors. A linear regression model was built using the natural log of the percent relative humidity (RH) and inverse of temperature (in K) as independent variables and the natural log of emission factors as the dependent variable. The coefficients for the inverse of temperature and log RH with log emission factor were found to be statistically significant for all of the samples at the 95% confidence level. This study should assist in retrospectively estimating indoor formaldehyde exposure of occupants of THUs.

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“…Source control can be pursued by limiting the quantity of VOC-emitting materials in the space, sealing materials to reduce emissions, and changing use patterns of household products. While laboratory emission data exists for a range of specific materials and conditions (Myers 1984;Kelly et al 1999;Baumann et al 2000;Kim et al 2007;Zhang et al 2007;Willem and Singer 2010), emission rates from installed materials in occupied buildings have been observed to vary…”

Section: Introductionmentioning

confidence: 99%

Formaldehyde and acetaldehyde exposure mitigation in US residences: in‐home measurements of ventilation control and source control

et al. 2014

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Measurements were taken in new US residences to assess the extent to which ventilation and source control can mitigate formaldehyde exposure. Increasing ventilation consistently lowered indoor formaldehyde concentrations. However, at a reference air exchange rate of 0.35 h -1 , increasing ventilation was up to 60% less effective than would be predicted if the emission rate were constant. This is consistent with formaldehyde emission rates decreasing as air concentrations increase, as observed in chamber studies. In contrast, measurements suggest acetaldehyde emission was independent of ventilation rate. To (OEHHA 2013) may require combining source control with ventilation. Ventilation rates could be increased during the first year after construction when VOC concentrations tend to be highest.

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Influence of temperature on formaldehyde emission parameters of dry building materials

Cited by 175 publications

References 14 publications

Formaldehyde in indoor air: a public health problem?

Formaldehyde in indoor air: a public health problem?

Effect of Temperature and Humidity on Formaldehyde Emissions in Temporary Housing Units

Formaldehyde and acetaldehyde exposure mitigation in US residences: in‐home measurements of ventilation control and source control

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