Quartz crystal microbalance system for detecting concentration o

Chemistry: analytical and immunological testing – Measurement of electrical or magnetic property or thermal...

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436 55, 422 90, 422 62, 73 2406, G01N 2704, G01N 2902

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active

061565784

ABSTRACT:
A quartz microbalance detector system for controlling the concentration of a gas component in a gas stream. The quartz microbalance interacts with the gas component, to effect a change in the oscillation frequency of the quartz microbalance detector and produce a signal correlative of concentration of the gas component in the gas stream. A specific embodiment includes a device for sensing concentration of a halogen-containing gas species in a gas stream, comprising a quartz microbalance detector having a quartz crystal with a surface functionalized with --OH functionality that reversibly reacts with the gas component to yield a bound reaction product on the surface that effects a change in the oscillation frequency of the quartz microbalance detector. The quartz microbalance may be utilized to maintain a set-point concentration of a gas compound in a multicomponent stream.

REFERENCES:
patent: Re35544 (1997-07-01), Snow
patent: 3744296 (1973-07-01), Beltzer
patent: 4056803 (1977-11-01), White et al.
patent: 4163384 (1979-08-01), Blakemore
patent: 4399686 (1983-08-01), Kindlund et al.
patent: 4446720 (1984-05-01), Sinclair
patent: 4637987 (1987-01-01), Minten et al.
patent: 4730478 (1988-03-01), Gedeon
patent: 4735081 (1988-04-01), Luoma et al.
patent: 5037624 (1991-08-01), Tom et al.
patent: 5042288 (1991-08-01), Vig
patent: 5056355 (1991-10-01), Hepher
patent: 5065140 (1991-11-01), Neuberger
patent: 5095736 (1992-03-01), Fesler et al.
patent: 5138869 (1992-08-01), Tom
patent: 5151110 (1992-09-01), Bein et al.
patent: 5151395 (1992-09-01), Tom
patent: 5320817 (1994-06-01), Hardwick et al.
patent: 5325705 (1994-07-01), Tom
patent: 5339675 (1994-08-01), DiLeo et al.
patent: 5385689 (1995-01-01), Tom et al.
patent: 5411709 (1995-05-01), Furuki et al.
patent: 5417821 (1995-05-01), Pyke
patent: 5445008 (1995-08-01), Watcher et al.
patent: 5476002 (1995-12-01), Bowers et al.
patent: 5518528 (1996-05-01), Tom et al.
patent: 5573728 (1996-11-01), Loesch et al.
patent: 5661226 (1997-08-01), Bowers et al.
patent: 5705399 (1998-01-01), Larue
patent: 5756631 (1998-05-01), Grate
patent: 5827947 (1998-10-01), Miller et al.
patent: 5866798 (1999-02-01), Schonfeld et al.
Karter, L., "NASA Proposes Zeolite Coats for Contamination Monitoring", NASA Tech. Briefs, Nov. 96.
Neuburger, Glen G., "Detection of Ambient Hydrogen Chloride with a Zinc-Coated Piezoelectric Crystal Resonator Operating in a Frequency-Time Different Mode," Anal. Chem. 1989, vol. 61, pp. 1559-1563.
Levenson, Leonard, L., "II. Chemisorption on Single Element Thin Films," in Applications of Piezoelectric Quartz Crystal Microbalances, C.Lu, editor, vol. 7, Elsevier, Amsterdam, 1984, pp. 198-203.
"The Worlds First 8-Bit RISC MCU in an 8-Pin Package," Philips Semiconductors, Nov. 7, 1997, 12 pages.
"SA612A Double-Balanced Mixer and Oscillator," Philips Semiconductors, Nov. 7, 1997, 12 pages.

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