A novel, low-cost, high performance dissolved methane sensor for aqueous environments
Boulart, Cédric, Mowlem, Matthew C., Connelly, Douglas P., Dutasta, Jean-Pierre and German, Christopher R. (2008) A novel, low-cost, high performance dissolved methane sensor for aqueous environments. Optics Express, 16, (17), 12607-12617. (doi:10.1364/OE.16.012607).
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Description/Abstract
A new method for in-situ detection and measurement of
dissolved methane in aqueous media/environments with a limit of detection
of 0.2 nM (3σ, and t90~110s) and range (1-300 nM) is presented. The
detection method is based on refractive index (RI) modulation of a modified
PolyDiMethylSiloxane (PDMS) layer incorporating molecules of
cryptophane-A [1] which have a selective and reversible affinity for
methane [2]. The refractive index is accurately determined using surface
plasmon resonance (SPR) [3]. A prototype sensor has been repeatedly
tested, using a dissolved gas calibration system under a range of temperature
and salinity regimes. Laboratory-based results show that the technique is
specific, sensitive, and reversible. The method is suitable for miniaturization
and incorporation into in situ sensor technology.
| Item Type: | Article |
|---|---|
| ISSNs: | 1094-4087 (print) |
| Related URLs: | |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > National Oceanography Centre (NERC) |
| Item ID: | 63485 |
| Date Deposited: | 14 Oct 2008 |
| Last Modified: | 01 Jun 2011 00:41 |
| Contributors: | Boulart, Cédric (Author) Mowlem, Matthew C. (Author) Connelly, Douglas P. (Author) Dutasta, Jean-Pierre (Author) German, Christopher R. (Author) |
| Date: | 6 August 2008 |
| Status: | Published |
| Contact Email Address: | cbo@noc.soton.ac.uk |
| URI: | http://eprints.soton.ac.uk/id/eprint/63485 |
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