Chemical composition, odor characteristics and risk value analysis of odorants in particleboards

IF 3.9 3区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Atmospheric Pollution Research Pub Date : 2024-09-04 DOI:10.1016/j.apr.2024.102298
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Abstract

The pungent odor emitted by particleboards affect people's physical and mental health. However, traditional methods using a sensory odor panel cannot determine the chemical composition and source of odorants, and cannot assess the risk of odor. In this study, the threshold odor concentration (TOC) value of terpenes in woody raw materials were determined by gas chromatography-mass spectrometry-olfactometry (GC-MS-O), and the TOC and the lowest concentration of interest (LCI) databases of particleboard odorants was established based on self-test and literature retrieval. Then, the odor activity value (OAV) and risk value (RV) of the main odor compounds were calculated and evaluated based on their TOC and LCI value. The results showed that benzene series, terpenes, acetic acid, hexaldehydes and other small molecules were the predominant substances released from particleboards. Although acetic acid (strong, pungent, vinegar-like odor), p-, m-xylene (pungent aroma), 1-butanol (spicy alcohol), o-xylene (pungent aroma), benzaldehyde (bitter almond flavor), naphthalene (strong tar flavor) had pungent odor, the main odorants (OAV>1) were aldehydes (such as hexanal, nonanal, pentanal and heptanal), terpenes (such as longifolene), and benzene series (p-, m-xylene). The reduction of aldehydes, terpenes and benzene series was the main way to reduce the pungent odor of particleboards. Although the single RV of these substances was much less than 1, the sum of all RV in HB exceeded 1. Therefore, the use of HB indoors needs careful consideration.

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刨花板中气味物质的化学成分、气味特征和风险值分析
刨花板散发的刺鼻气味会影响人们的身心健康。然而,使用感官气味面板的传统方法无法确定气味物质的化学成分和来源,也无法评估气味的风险。本研究采用气相色谱-质谱-olfactometry(GC-MS-O)法测定了木质原料中萜烯类化合物的阈值气味浓度(TOC)值,并根据自测和文献检索建立了刨花板气味物质的TOC和最低关注浓度(LCI)数据库。然后,根据其 TOC 和 LCI 值计算和评估了主要气味化合物的气味活性值(OAV)和风险值(RV)。结果表明,苯系列、萜烯、乙酸、六醛和其他小分子物质是刨花板释放的主要物质。虽然乙酸(强烈、刺激、醋味)、对二甲苯、间二甲苯(刺激性香气)、1-丁醇(辛辣酒精)、邻二甲苯(刺激性香气)、苯甲醛(苦杏仁味)、萘(浓焦油味)具有刺激性气味,但主要气味物质(OAV>;1)为醛类(如己醛、壬醛、戊醛和庚醛)、萜烯类(如长叶烯)和苯系列(对二甲苯、间二甲苯)。减少醛类、萜烯类和苯系列是减少刨花板刺激性气味的主要方法。虽然这些物质的单一 RV 远远小于 1,但 HB 中所有 RV 的总和超过了 1。
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来源期刊
Atmospheric Pollution Research
Atmospheric Pollution Research ENVIRONMENTAL SCIENCES-
CiteScore
8.30
自引率
6.70%
发文量
256
审稿时长
36 days
期刊介绍: Atmospheric Pollution Research (APR) is an international journal designed for the publication of articles on air pollution. Papers should present novel experimental results, theory and modeling of air pollution on local, regional, or global scales. Areas covered are research on inorganic, organic, and persistent organic air pollutants, air quality monitoring, air quality management, atmospheric dispersion and transport, air-surface (soil, water, and vegetation) exchange of pollutants, dry and wet deposition, indoor air quality, exposure assessment, health effects, satellite measurements, natural emissions, atmospheric chemistry, greenhouse gases, and effects on climate change.
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