Title:
QUANTIFICATION METHOD FOR TRACE AMOUNT OF ZINC IN SOLUTION HAVING HIGH CONCENTRATION OF NICKEL
Document Type and Number:
Japanese Patent JP2018159560
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To measure a trace amount of zinc contained in a solution having a high concentration of nickel with excellent precision.SOLUTION: A quantification method for quantifying a trace amount of zinc contained in a solution having a high concentration of nickel comprises: a preparation step of preparing the solution having the high concentration of the nickel containing the nickel and the trace amount of the zinc relative to an amount of the nickel as a sample solution; a wash step of bringing an organic solvent used for solvent extraction into contact with an acidic solution; an extraction step of bringing the organic solvent after the wash obtained in the wash step into contact with the sample solution to solvent-extract the zinc contained in the sample solution into the organic solvent after the wash; a back extraction step of bringing the organic solvent after the extraction obtained in the extraction step into contact with an acidic solution to back-extract the zinc contained in the organic solvent after the extraction into the acidic solution; and a quantification step of quantifying the zinc contained in the acidic solution obtained in the back extraction step.SELECTED DRAWING: Figure 1
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Inventors:
ANDO MASANORI
Application Number:
JP2017055436A
Publication Date:
October 11, 2018
Filing Date:
March 22, 2017
Export Citation:
Assignee:
SUMIKO TECHNO RES CO LTD
International Classes:
G01N1/10; C22B3/38; C22B19/20; G01N31/00
Attorney, Agent or Firm:
Aniya Setsuo
Fukuoka Masahiro
Fukuoka Masahiro