Isolation and analysis of lignin-derived phenols in aquatic humic substances: improvements on the procedures

被引:22
作者
Standley, LJ [1 ]
Kaplan, LA [1 ]
机构
[1] Acad Nat Sci Philadelphia, Stroud Water Res Ctr, Avondale, PA 19311 USA
基金
美国国家科学基金会;
关键词
aquatic humic substances; lignin; stream water; groundwater; analytical method;
D O I
10.1016/S0146-6380(98)00041-2
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Procedures for the extraction of aquatic humic substances and analysis of their lignin-derived phenols were assessed and altered to simplify and shorten XAD-8 resin cleaning, reduce losses due to sorption, and optimize oxidative release of phenols without increasing their transformation. The revised cleaning procedures require 5 rather than 120 h and sorptive losses of humic acids were reduced 7%. Coefficients of variation for individual phenols in the final method ranged from 1 to 11%. The method was used to analyze lignin-derived phenols in White Clay Creek watershed humics, Suwannee River humics (IHSS), and Lake Washington sediments. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:689 / 697
页数:9
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