Chinese Journal of Chromatography ›› 2019, Vol. 37 ›› Issue (2): 233-238.DOI: 10.3724/SP.J.1123.2018.09005

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Rapid on-site screening of five prohibited ingredients in cosmetics using thermal desorption-corona discharge ionization coupled with ion mobility spectrometry

GUO Xiangyu1, ZHAI Junfeng1, MA Longhua2, WU Qing2, BAI Hua1, MA Qiang1   

  1. 1. Chinese Academy of Inspection and Quarantine, Beijing 100176, China;
    2. Excellims Corporation, Acton, MA 01720, USA
  • Received:2018-09-03 Online:2019-02-09 Published:2014-12-31
  • Supported by:

    National Key Research & Development Program of China (No. 2016YFF0203704).

Abstract:

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.

Key words: cosmetics, ion mobility spectrometry, rapid on-site screening, thermal desorption

CLC Number: