Measurement of isotope ratios in complex matrices
US9128076B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2011 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | May 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/241
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present techniques are directed to a method for microprobe analyses of isotope ratios in inhomogeneous matrices. The method includes selecting matrix standards that have matrices that resemble a target matrix. A bulk isotope analysis is run on each of the matrix standards to determine a bulk isotope ratio value. A microprobe analysis is run on each of the matrix standards to determine a microprobe isotope ratio values for each of the plurality of matrix standards. Spurious values are eliminated from the microprobe isotope ratio values. The microprobe isotope ratio values are averaged for each of the matrix standards to create an average microprobe isotope ratio value associated with each of the matrix standards. The bulk isotope ratio value for each of matrix standards is plotted against the average microprobe isotope ratio value associated with each of the matrix standards to create a matrix corrected calibration curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.