Processes for production of silica gels carrying...

Details Processes for production of silica gels carrying... Processes for production of silica gels carrying...

2005-11-10

2010-06-15

Nguyen, Ngoc-Yen M (Department: 1793)

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

C436S128000, C252S181100, C502S401000, C502S405000

Reexamination Certificate

active

07736612

ABSTRACT:
The subject of the present invention is to provide a method for producing a silica gel supporting a derivatizing agent for a carbonyl compound that hardly collects carbonyl compounds during production thereof, and a silica gel supporting a derivatizing agent for a carbonyl compound produced by said production method, in order to lower a blank value in measurement of carbonyl compounds. The present invention also relates to a method for producing a silica gel supporting a derivatizing agent for a carbonyl compound characterized by bringing an acid-supported silica gel into contact with an organic solvent containing the derivatizing agent for a carbonyl compound, a silica gel filler supporting a derivatizing agent for a carbonyl compound comprising the silica gel supporting the derivatizing agent for a carbonyl compound produced by the above production method, a method for producing a silica gel supporting a derivatizing agent for a carbonyl compound characterized by treating in advance a silica gel having a cation-exchange group with the derivatizing agent for a carbonyl compound and then bringing it into contact with an organic solvent containing the derivatizing agent for a carbonyl compound, and the like.

REFERENCES:
patent: 6436311 (2002-08-01), Harimoto et al.
patent: 2004-191120 (2004-07-01), None
patent: WO 00/02041 (2000-01-01), None
Jana Slemr, “Determination of volatile carbonyl compounds in clean air,” Fresenius Journal of Analytical Chemistry v340 (1991), pp. 672-677.
Katsushige Takami, Kazuhiro Kuwata, Akiyoshi Sugimae, and Masao Nakamoto, “Trace Determination of Aldehydes in Water by High-Performance Liquid Chromatography,” Anal. Chem. 57 (1985), pp. 243-245.
Shiraishi et al.,J. Environ. Monit., 3(6): 654-60 (2001).

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