Title of article
?-CYCLODEXTRIN ENHANCED FLUORIMETRY FOR A DETERMINATION OF ASCORBIC ACID
Author/Authors
Wu، Xia نويسنده , , Yang، Jinghe نويسنده , , Sun، Changxia نويسنده , , Diao، Yuxia نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2001
Pages
-1330
From page
1331
To page
0
Abstract
A simple, sensitive and selected fluorimetry for determination of ascorbic acid (AA) is described. The method is based on the reaction of ascorbic acid in alkaline medium with 2,3diaminonaphthalene without oxidant. The addition of ?cyclodextrin (?-CD) greatly enhance A the fluorescence of the system. Under optimum conditions, a linear relationship was obtained between the fluorescence intensity and the concentration of ascorbic acid in the range of 0.05-600 µg/ml, the detection limit is 8 ng/ml. In AA-DAN-?-CD system, the inclusion complex is formed. Its inclusion constant is 1.1 × 106L2/mol2.
Keywords
System identification , Non-linear chromatography , separation
Journal title
Analytical Letters
Serial Year
2001
Journal title
Analytical Letters
Record number
36987
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