US 12,332,169 B2
Dissolved gas sensing system and method
Jason Kapit, Woods Hole, MA (US); and Anna Michel, Woods Hole, MA (US)
Assigned to Woods Hole Oceanographic Institution, Woods Hole, MA (US)
Appl. No. 18/009,294
Filed by WOODS HOLE OCEANOGRAPHIC INSTITUTION, Woods Hole, MA (US)
PCT Filed Jan. 14, 2022, PCT No. PCT/US2022/012500
§ 371(c)(1), (2) Date Dec. 8, 2022,
PCT Pub. No. WO2022/155460, PCT Pub. Date Jul. 21, 2022.
Claims priority of provisional application 63/137,942, filed on Jan. 15, 2021.
Prior Publication US 2023/0221246 A1, Jul. 13, 2023
Int. Cl. G01N 21/3504 (2014.01); A61B 10/00 (2006.01); G01N 21/359 (2014.01)
CPC G01N 21/3504 (2013.01) [G01N 21/359 (2013.01); A61B 2010/0083 (2013.01); G01N 2201/0634 (2013.01); G01N 2201/0636 (2013.01); G01N 2201/0826 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of detecting a gas dissolved in a liquid, comprising the steps of:
(a) providing an apparatus comprising:
a degasser;
an optical-based solution for analyte analysis or a laser-based solution for analyte analysis configured to produce electromagnetic radiation;
a hollow core fiber HCF having a first end, a second end, and a hollow interior, gaseously connected to said degasser and configured to accept gas and electromagnetic radiation into said HCF's interior;
a detector configured to detect electromagnetic radiation in and/or exiting said HCF's interior;
a propagator configured to establish a low-pressure area in the proximity of said HCF's first end and a detection chamber connected to said propagator and said HCF;
an inlet, wherein the inlet connected to the degasser and the HCF;
a mirror, wherein the mirror is located within said inlet and configured to reflect said electromagnetic radiation; and wherein said detector is located within said detection chamber;
a prism within said detection chamber configured to direct electromagnetic radiation from said optical-based solution for analyte analysis or a laser-based solution for analyte analysis into said HCF's interior and direct electromagnetic radiation from said HCF's interior to said detector;
and circuitry connected to said optical-based solution for analyte analysis or a laser-based solution for analyte analysis and said detector;
(b) placing said degasser into or in fluid communication with a liquid comprising a dissolved gas;
(c) diffusing gas from said liquid into said HCF's interior;
(d) emitting electromagnetic radiation from said optical mechanism into said HCF's interior by said prism;
(e) detecting said electromagnetic radiation with said detector;
(f) establishing an area of low-pressure with said propagator;
(g) producing output signals corresponding to said electromagnetic radiation detection by the detector;
(h) sending said output signals to said circuitry; and
(i) reflecting said electromagnetic radiation exiting said HCF with said mirror back into said HCF.