Determination of total carbon in liquid samples
US4344918A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1980 |
| Grant date | Aug 17, 1982 |
| Priority date | — |
| Expiry date | Mar 5, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N31/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for determining total carbon in each one of a plurality of discrete liquid samples comprises a reactor (13), and a pump (12) and flowline (11) for maintaining a continuous flow of a liquid containing an oxidizing agent into the reactor (13). The liquid samples are introduced in succession into the reactor (13), either by means of a syringe injection port (19) in the flowline (11), or by means of a rotary valve (203) and sample loop (204) in a recirculation line (202) through which carbon-free liquid is withdrawn from and circulated back to the reactor (13). A mercury vapor lamp (17) is immersed in the liquid in the reactor (13) for irradiating the liquid sample and the oxidizing agent in the reactor (13) with ultraviolet energy in order to oxidize to carbon dioxide any carbonaceous matter in the liquid sample. A sparger (20) is provided to remove the carbon dioxide so produced from the reactor (13); and a carbon dioxide detector (24) is provided to measure the carbon dioxide produced as a result of the oxidation of carbonaceous matter in the reactor (13). Electronic integrator circuitry (25) provides a measure of total carbon present in the carbon dioxide produced in t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.