Simultaneous analysis of chlorides and sulfides by low pressure ion exclusion chromatography
US7939334B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2010 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Jan 28, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/193333
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process for simultaneous assay of chlorides and sulfides by low pressure ion exclusion chromatography is provided, and in said process an analytic apparatus comprising a sampling valve, a sampling loop, an ion exclusion column and an analytic detection flow path is used, and said process comprises the following steps: (1) in the analytic detection flow path, the mixture of developer R1 and developer R2 mixes with Eluent C and then enters into a reactor, and the mixing is continued under heating. The resulting mixture flows into the optical flow cell and a baseline is mapped accordingly; (2) a testing sample S flows into the sampling loop through a sample flow path and the sampling valve, and under the drive of Eluent C, flows into the ion exclusion column from the sampling loop, and enters into the analytic detection flow path through the ion exclusion column; developer R1 and developer R2 each enter into the analytic detection flow path through respective developer flow path and mix with each other in the analytic detection flow path. The mixture of developer R1 and developer R2 mixes with the Eluent C carrying the testing sample and then enters into the reactor, and the mixing …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.