Method for emission spectrochemical analysis
US4326801A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1980 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Jun 26, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/67
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of emission spectrochemical analysis is provided which comprises the steps of producing a predetermined number of spark discharges between an electrode and a specimen containing an element in a first and second state. The intensity of emission of light caused by each of the spark discharges is measured and a frequency distribution of the measured intensities of emission is obtained. The distribution is separated into an area of normal distribution and an area outside the area of normal distribution, and an intensity of emission value is selected. The amount of the element in the first state is determined as a function of the selected intensity of emission multiplied by the area of normal distribution and the amount of the element in the second state is determined as a function of the selected intensity of emission multiplied by the area outside the area of normal distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.