The yields of carbonyl-containing reaction products from the ozonolysis of α-pinene have been investigated using concentrations of ozone found in the indoor environment ([O3] ≤ 100 ppb). An impinger was used to collect gas-phase oxidation products in water, where the derivatization agent O-tert-butylhydroxylamine hydrochloride (TBOX) and gas chromatography-mass spectrometry were used to identify carbonyl-containing species. Seven carbonyl-containing products were observed. The yield of the primary product, pinonaldehyde was measured to be 76 %. Using cyclohexane as a hydroxyl radical (∙OH) scavenger, the yield of pinonaldehyde decreased to 46 %, indicating the influence secondary OH radicals have on α-pinene ozonolysis products. Furthermore, the use of TBOX, a small molecular weight derivatization agent, allowed for the acquisition of the first mass spectral data of oxopinonaldehyde, a tricarbonyl reaction product of α-pinene ozonolysis. The techniques described herein allow for an effective method for the collection and identification of terpene oxidation products in the indoor environment.

中文翻译：

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使用 O-叔丁基羟胺盐酸盐鉴定和定量含羰基的 α-蒎烯臭氧分解产物

已经使用室内环境中的臭氧浓度 ([O3] ≤ 100 ppb) 研究了来自 α-蒎烯的臭氧分解的含羰基反应产物的产率。撞击器用于收集水中的气相氧化产物，其中衍生剂 O-叔丁基羟胺盐酸盐 (TBOX) 和气相色谱-质谱法用于鉴定含羰基的物质。观察到七种含羰基的产物。测得主要产物松香醛的产率为 76%。使用环己烷作为羟基自由基 (∙OH) 清除剂，松香醛的产率下降到 46%，表明二级 OH 自由基对 α-蒎烯臭氧分解产物的影响。此外，使用小分子衍生化剂 TBOX，允许获得氧代松酮醛的第一个质谱数据，氧代松酮醛是 α-蒎烯臭氧分解的三羰基反应产物。本文所述的技术提供了一种用于收集和鉴定室内环境中萜烯氧化产物的有效方法。