Issue 21, 2013

Surface modified annular wet denuder for the collection of water-soluble trace gases

Abstract

An annular wet denuder with both annular surfaces functioning as a sink for gaseous molecules is described. A gas absorbing solution was continuously flowed down the stainless-steel inner tube exterior and the outer tube interior gas collection surfaces of the denuder. In order to enhance the gas collection efficiency, the gas collection surfaces were modified with a Nylon monofilament and a perfluoroalkoxy alkane screen mesh cloth. The collection efficiency was increased by coiling the monofilament around the inner tube exterior, and by fixing the screen mesh cloth on the outer tube interior (e.g. 1.67 ± 0.06 and 1.77 ± 0.01 times at a gas absorbing solution flow rate of 0.30 cm3 min−1 tube−1, respectively). At a sampling flow rate of 1.0 dm3 min−1, 97.7 ± 0.53% of the trace gas was collected with the surface modified annular wet denuder. The response speeds of the analytical signal change (10% → 90% and 90% → 10%) were 5.0 ± 0.9 min and 4.4 ± 0.2 min, respectively. Quantitative collection of water-soluble trace gas and reasonably rapid response time were achieved with the developed device.

Graphical abstract: Surface modified annular wet denuder for the collection of water-soluble trace gases

Article information

Article type
Paper
Submitted
24 Apr 2013
Accepted
07 Sep 2013
First published
09 Sep 2013

Anal. Methods, 2013,5, 6071-6075

Surface modified annular wet denuder for the collection of water-soluble trace gases

M. Takeuchi, M. Izumi, M. Watanabe, H. Tanaka, T. Obata and K. Toda, Anal. Methods, 2013, 5, 6071 DOI: 10.1039/C3AY40680F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements