Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seoul, 04763, South Korea.
Environ Monit Assess. 2018 Mar 8;190(4):200. doi: 10.1007/s10661-018-6553-2.
In this study, we report a 2,4-dinitrophenylhydrazine (DNPH) derivatization HPLC/UV method to quantify carbonyl compounds (CCs) either in electronic cigarette (EC) refill solutions or in vaped aerosols. Vaped aerosol samples were entrained in a 1 L atm min ambient lab air stream and pulled through an impinger containing a DNPH solution for derivatization. The mass change tracking (MCT) approach was used to check mass balance. Refill solution samples were diluted (2, 4, and 10 times) in a DNPH/acetonitrile solution for derivatization. EC vaping samples were collected for 5, 10, or 15 puffs (2-s puff duration) with a 10-s interpuff interval. The DNPH derivatization method was used successfully for the estimation of both EC liquid CCs concentrations and vaping emission factors. The results for formaldehyde (FA), acetaldehyde (AA), and butyraldehyde (BA) were determined as 10.4 ± 3.10 μg mL (27.6 ± 7.43 ng puff), 1.9 ± 0.83 μg mL (4.4 ± 1.98 ng puff), and 4.4 ± 2.82 μg mL (12.0 ± 7.43 ng puff), respectively.
在这项研究中，我们报告了一种 2,4-二硝基苯肼（DNPH）衍生 HPLC/UV 方法，用于定量电子烟（EC）烟液或雾化气溶胶中的羰基化合物（CCs）。雾化气溶胶样品被吸入含有 DNPH 溶液的 1 L 大气 min 环境空气流中进行衍生化。质量变化跟踪（MCT）方法用于检查质量平衡。烟液样品在 DNPH/乙腈溶液中稀释（2、4 和 10 倍）进行衍生化。EC 蒸气采样器以 2-s 吸嘴持续时间进行 5、10 或 15 口抽吸（10-s 抽吸间隔）。DNPH 衍生化方法成功用于估算 EC 液体 CCs 浓度和蒸气排放因子。甲醛（FA）、乙醛（AA）和丁醛（BA）的结果分别确定为 10.4 ± 3.10 μg mL（27.6 ± 7.43 ng 吸嘴）、1.9 ± 0.83 μg mL（4.4 ± 1.98 ng 吸嘴）和 4.4 ± 2.82 μg mL（12.0 ± 7.43 ng 吸嘴）。
