Exposure Assessment Branch, Health Effects Laboratory, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV 26505, United States.
Chemosphere. 2011 Apr;83(3):327-33. doi: 10.1016/j.chemosphere.2010.12.036. Epub 2011 Jan 14.
Indoor environments are dynamic reactors where consumer products (such as cleaning agents, deodorants, and air fresheners) emit volatile organic compounds (VOCs) that can subsequently interact with indoor oxidants such as ozone (O(3)), hydroxyl radicals, and nitrate radicals. Typically, consumer products consist of mixtures of VOCs and semi-VOCs which can react in the gas-phase or on surfaces with these oxidants to generate a variety of oxygenated products. In this study, the reaction of a pine-oil cleaner (POC) with O(3) (100ppb) on a urethane-coated vinyl flooring tile was investigated at 5% and 50% relative humidity. These results were compared to previous α-terpineol+O(3) reactions on glass and vinyl surfaces. Additionally, other terpene and terpene alcohol mixtures were formulated to understand the emission profiles as seen in the POC data. Results showed that the α-terpineol+O(3) reaction products were the prominent species that were also observed in the POC/O(3) surface experiments. Furthermore, α-terpineol+O(3) reactions generate the largest fraction of oxygenated products even in equal mixtures of other terpene alcohols. This finding suggests that the judicial choice of terpene alcohols for inclusion in product formulations may be useful in reducing oxidation product emissions.
室内环境是动态反应场所，其中消费品（如清洁剂、除臭剂和空气清新剂）会释放挥发性有机化合物（VOC），这些 VOC 随后可能与室内氧化剂（如臭氧（O(3)）、羟基自由基和硝酸盐自由基）相互作用。通常，消费品由 VOC 和半挥发性有机化合物（SVOC）的混合物组成，这些混合物可在气相中或在这些氧化剂存在的表面上发生反应，从而生成各种含氧产物。在这项研究中，研究了松油清洁剂（POC）在 5%和 50%相对湿度下与臭氧（O(3)）（100ppb）在聚氨酯涂层乙烯基地板砖上的反应。将这些结果与之前在玻璃和乙烯基地板表面上进行的α-松油醇+O(3)反应进行了比较。此外，还配制了其他萜烯和萜烯醇混合物，以了解 POC 数据中所见的排放特征。结果表明，α-松油醇+O(3)反应产物是在 POC/O(3)表面实验中也观察到的主要物种。此外，即使在其他萜烯醇的等比例混合物中，α-松油醇+O(3)反应也会生成最大比例的含氧产物。这一发现表明，在产品配方中明智地选择萜烯醇可能有助于减少氧化产物的排放。
