Vol. 35, Issue 2, pp. 395-402

  1. Archive
  2. Optica Applicata Vol. 35, Issue 2, pp. 395-402 (2005)
Vol. 35 Issue 2 pp. 395-402

Rapid detection of trace chloroethylenes using laser mass spectrometry

Jing MA, Lei DING, Li FANG, Haiyang ZHENG, Xuejun GU, Weijun ZHANG

Keywords

laser mass spectrometry, resonance-enhanced multiphoton ionization, time of flight mass spectrum, chloroethylenes

Abstract

Laser mass spectrometry is a new chemical trace analysis method with high selectivity, sensitivity and speed. The mass-resolved resonance-enhanced multiphoton ionization (REMPI) spectra of chloroethylenes–trichloroethylene and tetrachloroethylene are firstly reported in the range 305.0–325.0 nm. The mass-resolved excited spectra and laser power index of fragment ions CCl+ are presented. The experimental results indicate that 310.8 nm is the suitable ionization wavelength for detection of trichloroethylene and 322.5 nm for the detection of tetrachloroethylene in this wavelength range. The detection limits of these two chloroethylenes of concentration range expressed in mg/L are presented.

Vol. 35
Issue 2
pp. 395-402

0.22 MB
OPTICA APPLICATA - a quarterly of the Wrocław University of Science and Technology, Faculty of Fundamental Problems of Technology