Air pollution monitoring by negative-ion mass spectrometry

✍ Scribed by Y Gleitman; C Lifshitz; T Yinon

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 260 KB
• Volume: 26
• Category: Article
• ISSN: 0042-207X
• DOI: 10.1016/s0042-207x(76)80005-x

✦ Synopsis

In this research the use of negative-ion mass spectrometry for the monitoring of oxygencontaining gases has been demonstrated. Electron impact by low-energy electrons of oxygen-containing gases will result in dissociative electron capture forming 0 -By introducing into a negative-ion mass spectrometer a mixture of S02, NO, NO2, CO, C02 and 02, focussing 0 -(m/e = 16) onto the collector, and varying the electron energy, a spectrum of peaks is obtained, which are characteristic of the oxygen-containing molecules in the mixture. The results of this research will be the basis of the design of a small negative-ion mass spectrometer system for the monitoring of oxygen-containing gases in air.