Real-time monitoring of trace-level VOCs by an ultrasensitive lamp-based VUV photoionization mass spectrometer

Sun, W. Q.; Shu, J. N.; Zhang, P.; Li, Z.; Li, N. N.; Liang, M.; Yang, B.

doi:https://doi.org/10.5194/amt-8-4637-2015

Articles | Volume 8, issue 11

https://doi.org/10.5194/amt-8-4637-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-8-4637-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 8, issue 11

Research article

|

04 Nov 2015

Research article |

| 04 Nov 2015

Real-time monitoring of trace-level VOCs by an ultrasensitive lamp-based VUV photoionization mass spectrometer

W. Q. Sun, J. N. Shu, P. Zhang, Z. Li, N. N. Li, M. Liang, and B. Yang

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Final revised paper (published on 04 Nov 2015)
Preprint (discussion started on 15 Jun 2015)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC C1717: 'background problem', Anonymous Referee #3, 28 Jun 2015
RC C1723: 'Interactive comment on “Real-time monitoring of trace-level VOCs by an ultrasensitive compact lamp-based VUV photoionization mass spectrometer” by W.Q. Sun et al.', Anonymous Referee #2, 29 Jun 2015
- AC C1870: 'Respose for referee #2’s comments', Jinian Shu, 02 Jul 2015
AC C1866: 'Respose for reviewer #3’s comments', Jinian Shu, 02 Jul 2015
RC C1904: 'Review of Sun et al.', Anonymous Referee #4, 07 Jul 2015
- AC C1989: 'Responses to anonymous referee #4’s comments', Jinian Shu, 15 Jul 2015

Short summary

A novel ultrasensitive VUV photoionization mass spectrometer is developed to monitor trace-level VOCs in real time. By employing a light baffle in the photoionizer, the background noise is efficiently suppressed and the detection limit reaches to a low pptv level. Continuous monitoring of VOCs in urban air demonstrates the strength of this instrument. This study reveals that the new technique may have the capability of ranking with the PTR-MS for field measurements.