Identification and characterization of odorous volatile organic compounds emitted from wood-based panels

Liu, Yu; Zhu, Xiaodong; Qin, Xiang; Wang, Zhao; Hu, Yangbing; Yuan, Dan

doi:10.1007/s10661-019-7939-5

Cited by 26 publications

(14 citation statements)

References 20 publications

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“…percentage of chemicals contributing to odor [34]. It follows from this report that airborne chemicals with high concentrations do not always dominate the odor profile.…”

Section: Plos Onementioning

confidence: 74%

“…However, the contribution of airborne chemicals to odor in indoor air may differ from the percentage of airborne chemical concentration because of differences in odor characteristics and odor threshold concentration of each substance. Some studies showed that the compositional percentage of airborne chemical concentrations may be different from the percentage of chemicals contributing to odor [ 34 ]. It follows from this report that airborne chemicals with high concentrations do not always dominate the odor profile.…”

Section: Discussionmentioning

confidence: 99%

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Is indoor environment a risk factor of building-related symptoms?

et al. 2023

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The indoor environment, particularly indoor air quality (IAQ), is significantly associated with building-related symptoms (BRSs) in humans. In our previous studies, we demonstrated a significant relationship between BRSs and indoor chemical concentrations. In Japan, the Ministry of Health, Labor, and Welfare (MHLW) guideline recommends an air quality target of 13 volatile organic compounds (VOCs) and a provisional target of 400 μg/m3 for total VOCs (TVOC). The objective of this study was to determine the relationship between TVOC levels and the risk of BRSs using the Japanese provisional target TVOC level of 400 μg/m3. The relationship between odor intensity and BRSs while the TVOC levels were under 400 μg/m3 was also examined. The study was conducted in a laboratory house (LH) on the campus of Chiba University from 2017–2019. The study included 149 participants who spent 60 minutes in the LH. The participants were asked to evaluate the IAQ of the LH. A significant relationship between the risk of BRSs and the provisional target TVOC level was observed (odds ratio: 2.94, 95% confidence interval: 1.18–7.35). Furthermore, a significant relationship between odor intensity and risk of BRSs in spaces with TVOC levels less than 400 μg/m3 was detected (odds ratio: 6.06, 95% confidence interval: 1.21–30.44). In conclusion, the risk of BRSs is significantly lower in spaces with low TVOC levels and low odor intensity. Reducing the concentration of airborne chemicals and odor intensity may improve IAQ and prevent BRSs.

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“…percentage of chemicals contributing to odor [34]. It follows from this report that airborne chemicals with high concentrations do not always dominate the odor profile.…”

Section: Plos Onementioning

confidence: 74%

Section: Discussionmentioning

confidence: 99%

Is indoor environment a risk factor of building-related symptoms?

et al. 2023

View full text Add to dashboard Cite

show abstract

“…In addition, 22 odor-active substances were identified, and five of these odorants were first reported as wood odorants, with thymoquinone proving to have a pencil-like odor [ 22 ]. Liu et al found some unpleasant odors from aldehydes in wood-based panels, with octanal as the main odor source of these aldehydes [ 23 ]. Dong et al investigated the odor characteristics of polyvinyl-chloride-overlaid medium density fiberboard (MDF).…”

Section: Introductionmentioning

confidence: 99%

Research on Very Volatile Organic Compounds and Odors from Veneered Medium Density Fiberboard Coated with Water-Based Lacquers

et al. 2022

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Very volatile organic compounds (VVOCs) are a group of important odor pollutants affecting indoor air quality that have been shown to be harmful to human health. A 15 L environmental chamber, combined with multi-bed tube was used to collect gases. Fifteen very volatile organic compounds (VVOCs), including 12 odor compounds, were identified from veneered medium density fiberboard coated with water-based lacquer (WB-MDF) using gas chromatography–mass spectrometry/olfactometry (GC-MS/O). The total very volatile organic compound (TVVOC) and total odor intensity (TOI) showed a decreasing trend over time, reaching equilibrium on day 28. TVVOC showed an overall slow-fast-slow emission profile, from day 3 to day 7, with a maximum decay rate of 29.7%. TOI showed the greatest rate of decline from day 1 to day 3, at approximately 12%. Alkane and alcohol VVOCs were the more abundant compounds, accounting for at least 60% and even up to 80% of the total. The major odor impression was fruity, with a highest odor rating of 6.6, followed by sweet, with an odor rating of 6.1. Although the odor impression changed from sweet to fruity over time, it seemed pleasant overall. The odor contributors were mainly alkanes, alcohols, esters, and ethers, which had relatively high odor intensities. The main odor-contributing substances were dichloromethane, ethanol, ethyl acetate, 2-methylacrylic acid methyl ester, and tetrahydrofuran. When WB-MDF is used for furniture or other decorative materials, it is strongly recommended that it be stored under ventilation for at least 28 days and the adoption of substitute solvents of lacquers, modified adhesives, and low-odor wood raw materials is recommended. These possible initiatives would contribute to the aim of building an environmentally friendly indoor environment.

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“…[2][3][4][5][6]. Most previous studies on the chemical constituents of wood focused on odor compounds and organic solvent extracts detected by gas chromatography-mass spectrometry (GC-MS) [7][8][9][10][11][12][13][14][15][16], and direct analysis in real time-mass spectrometry (DART-MS) [3,[17][18][19][20][21][22]. Using GC-MS as an instrument method, they have a variety of injection methods.…”

Section: Introductionmentioning

confidence: 99%

Similarity network fusion for aggregating headspace GC–MS and direct analysis in real time–mass spectrometry data from solid samples to enhance species identification efficiency of high–temperature heated wood

Zhang

Guo

et al. 2022

J Wood Sci

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Pterocarpus santalinus and Pterocarpus tinctorius are commonly used species of the genus Pterocarpus in the wood trade. Although both of them have been listed in Appendix II of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) since 2019, it is still critical to identify them in terms of plant taxonomy. Currently, high-temperature heating is an accepted treatment method for high-density wood species such as Pterocarpus to improve dimensional stability and restore previous drying defects partially. It has proved challenging to identify the high-temperature (e.g., 120 °C) heated wood from these two species. Thus, this study approaches species identification of two Pterocarpus of high-temperature (e.g., 120 °C) heated solid wood samples using headspace–gas chromatography–mass spectrometry (HS–GC–MS). Besides, a computational analytical method named similarity network fusion (SNF) was proposed to aggregate data in two different types, respectively, derived from the HS–GC–MS and direct analysis in real time–mass spectrometry (DART–MS) to explore the feasibility of improving the efficiency and accuracy of wood species discrimination. The SNF exhibits more significant differences and higher predictive accuracy (100%) between P. santalinus and P. tinctorius than that based on the HS–GC–MS data (77.78%) or DART–MS (66.67%) alone. These results demonstrated the capability of the HS–GC–MS technique in the analysis of high-temperature heated solid wood and the potential of multidimensional or comprehensive data sets based on the SNF algorithm in the field of wood species identification.

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Identification and characterization of odorous volatile organic compounds emitted from wood-based panels

Cited by 26 publications

References 20 publications

Is indoor environment a risk factor of building-related symptoms?

Is indoor environment a risk factor of building-related symptoms?

Research on Very Volatile Organic Compounds and Odors from Veneered Medium Density Fiberboard Coated with Water-Based Lacquers

Similarity network fusion for aggregating headspace GC–MS and direct analysis in real time–mass spectrometry data from solid samples to enhance species identification efficiency of high–temperature heated wood

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