Method and apparatus for analysis of poly (biphenyl chloride) in electrical insulating oil
US8562910B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2009 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Sep 16, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/8872
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An object of the present invention is to provide a method and an apparatus by which PCBs in insulating oil can be analyzed with high accuracy in a convenient, inexpensive, and rapid manner. The method for analyzing polychlorobiphenyls by measuring the concentration of polychlorobiphenyls in insulating oil comprises a step of, as pretreatment, bringing particles of a copolymer that contains divinylbenzene and a methacrylate organic monomer as monomer components into contact with insulating oil containing polychlorobiphenyls, so as to separate polychlorobiphenyls in insulating oil from oil content that is an impurity. The methacrylate organic monomer preferably has a diol type hydroxyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.