A novel, low-cost, high performance dissolved methane sensor for aqueous environments

Optics Express
Cédric BoulartChristopher R German

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 (3 sigma, and t90 approxiamtely 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.

References

Jul 13, 2004·Marine Pollution Bulletin·Heinar SchmidtGrazyna Kowalewska
May 4, 2005·Trends in Biotechnology·Silke Kröger, Robin J Law
Jul 30, 2005·The Journal of Organic Chemistry·Thierry BrotinJean-Pierre Dutasta
Jan 31, 2007·Chemical Reviews·William S Reeburgh

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Citations

Jul 3, 2013·Environmental Science & Technology·Cédric BoulartJean-Pierre Dutasta
Dec 18, 2009·Journal of Molecular Recognition : JMR·Rebecca L Rich, David G Myszka
Dec 17, 2014·Angewandte Chemie·Akil I JosephK Travis Holman
Oct 12, 2010·Applied Spectroscopy·Olivier PéronChantal Compère
Dec 25, 2015·Optics Express·Firehun Tsige DulloOlav Gaute Hellesø
Jul 7, 2020·Engineering in Life Sciences·Jacob J LambDag Roar Hjelme

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