Guo Xiangyu, Zhai Junfeng, Ma Longhua, Wu Qing, Bai Hua, Ma Qiang
Chinese Academy of Inspection and Quarantine, Beijing 100176, China.
Excellims Corporation, Acton, MA 01720, USA.
Se Pu. 2019 Feb 8;37(2):233-238. doi: 10.3724/SP.J.1123.2018.09005.
A rapid on-site analytical method is developed for screening lidocaine and four other types of prohibited ingredients in cosmetics using thermal desorption-corona discharge ionization together with ion mobility spectrometry. Performing no pretreatment, we dropped or sprayed cosmetic samples onto a Nomex sampling swab. The sampler was placed into a compartment for thermal desorption and corona discharge ionization; then, ion mobility spectrometry analysis was performed. The limits of detection (LODs) for the five analytes ranged from 10 to 50 ng. The instrumental analysis time for a single run was less than 20 ms, and the total sample analysis period was within 1 min. The proposed method is simple, fast, and has low cost, and could be used as an analytical tool for rapid on-site screening of prohibited ingredients in cosmetics.
开发了一种快速现场分析方法，用于使用热解吸-电晕放电电离结合离子迁移谱法筛选化妆品中的利多卡因和其他四种违禁成分。无需进行预处理，我们将化妆品样品滴加或喷洒到Nomex采样拭子上。将采样器放入热解吸和电晕放电电离的隔室中；然后，进行离子迁移谱分析。五种分析物的检测限范围为10至50 ng。单次运行的仪器分析时间少于20 ms，总样品分析时间在1分钟内。所提出的方法简单、快速且成本低，可作为快速现场筛选化妆品中违禁成分的分析工具。
