Title:
ANALYZING METHOD FOR FLUORIDE ION AND ANALYZING REAGENT
Document Type and Number:
Japanese Patent JP3033494
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for analyzing fluoride ion with high sensitivity by a more simple operation than a conventional analyzing method and analyzing reagent in a quantitative analysis of the ion.
SOLUTION: A fluorophotometry is used to measure fluoride ion, a novel analysis reagent is used, and an operating method having decided pH regulation, heating temperature and time is used to measure with high sensitivity. As the reagent, any of trivalent cation of aluminum, cerium or lanthanum is used. As ligand, 2-methylamino-4,5-diphenylimidazole are provided. Since the ligand is substituted to be reacted with the fluoride ion to be analyzed and liberated in liquid to be detected, its fluorescent intensity is measured to calculate fluoride ion concentration.
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Inventors:
Takashi Fukuchi
Application Number:
JP18311096A
Publication Date:
April 17, 2000
Filing Date:
July 12, 1996
Export Citation:
Assignee:
NEC
International Classes:
G01N21/64; G01N21/78; G01N30/84; G01N30/88; G01N31/00; (IPC1-7): G01N31/00; G01N21/78
Other References:
分析化学 ２５巻７号（１９７６）第４１９−４２３頁
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)