Title:
PURIFYING AGENT FOR OILY LIQUID CONTAINING POLYBIPHENYL CHLORIDE
Document Type and Number:
WIPO Patent Application WO/2010/073818
Kind Code:
A1
Abstract:
Disclosed is a column (1) for removing an interfering substance that affects the analysis of polybiphenyl chloride contained in an oily liquid such as an electrical insulating oil from the oily liquid. The column (1) comprises: a first column (10) which is filled with a multilayer silica gel (13) that comprises an upper layer (14) comprising a sulfate silica gel and a lower layer (15) comprising a nitrate silica gel laminated to each other; and a second column (20) which is connected to the lower layer (15) side of the first column (10) and is filled with an alumina layer (23). The nitrate silica gel in the lower layer (15) is produced by treating an active silica gel with a mixed aqueous solution containing copper nitrate and silver nitrate, wherein the molar ratio of element copper to element silver (copper element : silver element) is preferably 1 : 0.5 to 2.0.
Inventors:
HONDA, Katsuhisa (Ehime University5-7, Tarumi 3-chome, Matsuyama-shi, Ehime 66, 〒7908566, JP)
Application Number:
JP2009/068739
Publication Date:
July 01, 2010
Filing Date:
October 26, 2009
Export Citation:
Assignee:
EHIME UNIVERSITY (10-13, Dogo-Himata Matsuyama-shi, Ehime 77, 〒7908577, JP)
国立大学法人愛媛大学 (〒77 愛媛県松山市道後樋又１０番１３号 Ehime, 〒7908577, JP)
MIURA CO., LTD. (7 Horie-cho, Matsuyama-shi, Ehime 96, 〒7992696, JP)
国立大学法人愛媛大学 (〒77 愛媛県松山市道後樋又１０番１３号 Ehime, 〒7908577, JP)
MIURA CO., LTD. (7 Horie-cho, Matsuyama-shi, Ehime 96, 〒7992696, JP)
International Classes:
G01N1/10; G01N30/06; G01N30/26; G01N30/88
Attorney, Agent or Firm:
ICHIKAWA, Tsunehiko (3rd Floor, Nishimura Bldg. 5-7, Hommachi 1-chome, Chuo-ku, Osaka-sh, Osaka 53, 〒5410053, JP)
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