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ID 19971
Eprint ID
19971
FullText URL
Author
Motomizu, Shoji
Hagiwara Takayuki
Yokoyama Atsushi
Oshima, Mitsuko
Abstract
Color development based on the ion association of molybdophosphate with a cationic dye, a chloro derivative of Malachite Green (Cl-MG), was investigated in an aqueous acidic solution. Cl-MG is very stable as its quinoid form in an acidic medium, and can easily react with molybdophosphate to form a green ion associate, which shows maximum absorption at 685nm. The experimental conditions for optimum color development have been examined. This color development reaction could be applied to the determination of trace amounts of orthophosphate. The molar absorptivity was 1.3×105dm3 mol-1cm-1 at 685nm.
Keywords
Color development
ion association
molybdophosphate
chloro-Malachite Green
Published Date
1993-12-10
Publication Title
Analytical Sciences
Volume
volume9
Issue
issue6
Publisher
日本分析化学会
Publisher Alternative
Japan Society for Analytical Chemistry
Start Page
817
End Page
820
ISSN
0910-6340
NCID
AA10500785
Content Type
Journal Article
language
英語
Copyright Holders
日本分析化学会
File Version
publisher
Refereed
True
DOI