Multiaxis sensing system for detection of airborne molecules and radionuclides
| DWPI Title: Apparatus for detecting analyte, airborne radioisotope and molecular effluent gases, comprises pressure cell including sorbent, where sorbent comprises metal-organic-framework material, pump coupled to pressure cell configured to pressurize sorbent with fluid containing an analyte |
| Abstract: Various technologies presented herein relate to a method and equipment for detecting both airborne radioisotope and molecular effluent gases. Multi-Axis Sensing can be conducted by utilizing a pressurized MOF sorbent, such as a scintillating Metal-Organic Frameworks (S-MOFs). These MOFs are crystalline nanoporous materials that have synthetic versatility that allow adjustment of pore size, chemical environment, and luminescence properties. A method for detecting an analyte in a fluid sample is provided that comprises: loading a sorbent with a sample fluid, wherein the sorbent comprises a MOF material; pressurizing the sample fluid to increase the fluid in the sorbent thereby making a pressurized sorbent; and detecting ionizing radiation or a chemical property of the analyte in the pressurized sorbent. |
| Use: Apparatus for detecting analyte, airborne radioisotope and molecular effluent gases. |
| Advantage: The MOFs can provide enormous surface area compared to other types of filters or porous materials. This allows a surprising amount of gas to be compressed within them, even more than if the chamber were empty. A MOF-filled vessel can hold more gas than an empty one because the surface area of the MOF is much higher compared with the vessel. Gas molecules adsorb to surfaces, so more molecules will be adsorbed and contained in a MOF than in an empty chamber. The scintillating nanoporous MOFs can be used as the sorbent bed. While ionizing radiation (e.g., beta or gamma particles) from an analyte adsorbed by a MOF can exit the MOF and interact with an external scintillator to produce light detectable by a photodetector, improved detection can be achieved in some cases when the MOF itself is a scintillator. A scintillating MOF can be excited by a sample adsorbed on it or otherwise interacting with it, thus causing it to scintillate and give off detectable radiation. Thus, the analyte can be indirectly detected by the scintillation of the MOF. A combination of direct and indirect signal can provide a unique signature for certain analytes that improves the reliability/accuracy of the detection for that analyte. |
| Novelty: Apparatus comprises a pressure cell (130) including a sorbent (140), where the sorbent comprises a metal-organic-framework (MOF) material; a pump (132) coupled to the pressure cell configured to pressurize the sorbent with a fluid containing an analyte; a sensor configured for detection of the analyte in the sorbent by detecting gamma, beta, or gamma and beta particles; and a computing device (120) configured to process data received from the sensor and compile multiple sensed properties to produce a signature set of data for the analyte. |
| Filed: 6/29/2021 |
| Application Number: US17362212A |
| Tech ID: SD 14925.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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