INTERACTION OF LINDANE WITH LAURENTIAN FULVIC-ACID - A COMPLEXATION MODEL

被引：7
|
作者：
LI, JH [1 ]
GAMBLE, DS [1 ]
PANT, BC [1 ]
LANGFORD, CH [1 ]
机构：
[1] CONCORDIA UNIV, DEPT CHEM & BIOCHEM, 1455 MAISONNEUVE W, MONTREAL H3G 1M8, QUEBEC, CANADA
来源：
ENVIRONMENTAL TECHNOLOGY | 1992年 / 13卷 / 08期
基金：
加拿大自然科学与工程研究理事会;
关键词：
LINDANE; LAURENTIAN FULVIC ACID; INTERACTION;
D O I：
10.1080/09593339209385205
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A GC-ultrafiltration method has been used for quantitative measurements of the extent of binding between a nonpolar insecticide lindane and a stoichiometrically well characterized fulvic acid (FA). The small (approximately 1-mu-Moleg-1 of FA) and limited binding capacity observed favours a definite binding site model, which is related to the protonation of carboxylate groups. The stoichiometric binding capacity is a function of ionic strength and FA concentration in ways suggesting that hydrophobic sites are created by conformational equilibria of the FA polyelectrolyte.
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页码：739 / 749
页数：11
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