Pyrolysis-GC/AED and pyrolysis-GC/MS analysis of chlorinated structures in aquatic fulvic acids and chlorolignins

被引：13

作者：

Flodin, C ^{[1
]}

Ekelund, M ^{[1
]}

Boren, H ^{[1
]}

Grimvall, A ^{[1
]}

机构：

[1] NATL LAB FORENS LAB, S-58194 LINKOPING, SWEDEN

来源：

CHEMOSPHERE | 1997年 / 34卷 / 11期

关键词：

D O I：

10.1016/S0045-6535(97)00043-X

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A study was undertaken to evaluate whether pyrolysis-gas chromatography/atomic emission detection (Py-GC/AED) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) can be used to systematically search for halogenated structures in natural organic matter. Two samples of aquatic fulvic acid (FA) and two samples of high molecular weight organic matter isolated from bleached-kraft mill effluents (BKME) were selected to respectively represent naturally and industrially chlorinated organic matter. Mono- and dichlorophenol were found in the pyrolysates of the naturally chlorinated samples, and methyl esters of 2,4-dichlorobenzoic acid, monochloro-4-methoxybenzoic acid and 3,5-dichloro-4-methoxybenzoic acid were the main compounds detected when a methylating agent, tetramethylammonium hydroxide (TMHA), was added to the samples prior to the pyrolysis. These results strongly indicate the presence of chlorinated 4-hydroxyphenyl structures in the original FA samples. For the BKME samples, on the other hand, the main chlorinated pyrolysis products were guaiacyl- and syringyl-derived compounds. (C) 1997 Elsevier Science Ltd.

引用

页码：2319 / 2328

页数：10

共 19 条

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