Detection of tetrachloromethane by a new photoemission ion mobility spectrometry

Abstract

Abstract: With a photoelectron source induced by ultraviolet radiation on mental surface, a photoemission ion mobility spectrometry (PE-IMS) was set up, which can be used to detect halide since halide has a good ability to attach electron. Using CCl4 sample, the evolutions of the ion intensity, full width at half maximum and resolution versus drift electric field, ion gate pulse width and ion gate voltage were got, and the reasons for the evolutions were analyzed simply. Taking into account both ion intensity and resolution, optimized experimental parameters were got. The PE-IMS has a limit of detection at 4 ppb for CCl4 and its measurable linear dynamics range is over two orders of magnitude in the optimized experimental parameters.

Key words: spectroscopy, ion mobility spectrometry, photoemission, photoelectron source, tetrachloromethane

CLC Number:

O659.2

SU Deng-sheng1, NIU Wen-qi2, LIU sheng1, SHEN Cheng-yin1, HUANG Chao-qun1, WANG Hong-mei1, JIANG Hai-he1, CHU Yan-nan1. Detection of tetrachloromethane by a new photoemission ion mobility spectrometry[J]. J4, 2013, 30(2): 138-145.

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