Native fluorescence detection methods, devices, and systems for organic compounds
US10895533B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2020 |
| Grant date | Jan 19, 2021 |
| Priority date | — |
| Expiry date | Mar 16, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/126
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Naphthalene, benzene, toluene, xylene, and other volatile organic compounds VOCs have been identified as serious health hazards. Embodiments of the invention are directed to methods and apparatus for near-real-time in-situ detection and accumulated dose measurement of exposure to naphthalene vapor and other hazardous gaseous VOCs. The methods and apparatus employ excitation of fluorophors native or endogenous to compounds of interest using light sources emitting in the ultraviolet below 300 nm and measurement of native fluorescence emissions in distinct wavebands above the excitation wavelength. The apparatus of some embodiments are cell-phone-sized sensor/dosimeter “badges” to be worn by personnel potentially exposed to hazardous VOCs. The badge sensor of some embodiments provides both real time detection and data logging of exposure to naphthalene or other VOCs of interest from which both instantaneous and accumulated dose can be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.