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Title:
METHOD FOR EXTRACTING HEXAVALENT CHROMIUM
Document Type and Number:
WIPO Patent Application WO/2011/004430
Kind Code:
A1
Abstract:
Disclosed is a method for extracting hexavalent chromium, for highly efficient extraction of hexavalent chromium from polymer material. The method for extracting hexavalent chromium is characterized in that a fatty acid is added to the polymer material to obtain a liquid sample, water or an aqueous alkali solution is added to this sample, and hexavalent chromium contained in the sample is dissolved in the water or aqueous alkali solution. A fatty acid of C11 or higher is preferred. An aqueous alkali solution with a concentration of at least 0.1 mol/L and no more than 1.0 mol/L is also preferred.

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Inventors:
MURAMATSU MIHO
OKI MITSUHIRO
TAKENAKA MIYUKI
Application Number:
PCT/JP2009/003167
Publication Date:
January 13, 2011
Filing Date:
July 07, 2009
Export Citation:
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Assignee:
TOSHIBA KK (JP)
MURAMATSU MIHO
OKI MITSUHIRO
TAKENAKA MIYUKI
International Classes:
G01N31/00; G01N33/44
Foreign References:
JP2008232748A2008-10-02
JP2006132979A2006-05-25
JP2007064862A2007-03-15
JP2003172696A2003-06-20
JP2008076348A2008-04-03
JP2008157865A2008-07-10
JP2006132979A2006-05-25
JP2008232748A2008-10-02
Other References:
See also references of EP 2453232A4
Attorney, Agent or Firm:
MATSUYAMA, Masayuki et al. (JP)
Mitsuyuki Matsuyama (JP)
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