Quenching of fluorescence of phenolic compounds and modified humic acids by cadmium ions

被引：7
|
作者：
Tchaikovskaya, O. N. [1 ]
Nechaev, L. V. [1 ]
Yudina, N. V. [2 ]
Mal'tseva, E. V. [2 ]
机构：
[1] Tomsk State Univ, 36 Lenin Ave, Tomsk 634050, Russia
[2] Russian Acad Sci, Siberian Branch, Inst Petr Chem, Fed State Budgetary Sci Inst, 4 Acad Skii Ave, Tomsk 634021, Russia
来源：
LUMINESCENCE | 2016年 / 31卷 / 05期
关键词：
phenolic compounds; humic acids; cadmium ions; complexation constants; mechanoactivation; AQUATIC FULVIC-ACID; ORGANIC-MATTER; BINDING;
D O I：
10.1002/bio.3077
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The interaction of a number of phenolic compounds, being model fragments' of humic acids, with cadmium ions was investigated. The fluorescence quenching method was used to determine the complexation constants of these compounds with cadmium ions. It was established that bonding of phenolic compounds by cadmium ions at ?H 7 is weak and reaches a maximum value of 15% for interaction with resorcinol. It was demonstrated that modification of humic acids by the mechanoactivation method increases by three times bonding of cadmium ions, which is caused by strengthening the acid properties of carboxyl and hydroxyl groups at the aromatic ring. Copyright (c) 2016 John Wiley & Sons, Ltd.
引用
收藏
页码：1098 / 1102
页数：5
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