Humic substances - Excited states, quenching by metal ions, and photosensitized degradation of chlorophenols

被引：9
作者：
Lang, K
Wagnerova, DM
Klementova, S
Kubbat, P
机构：
[1] UNIV S BOHEMIA, FAC BIOL SCI, CESKE BUDEJOVICE 37005, CZECH REPUBLIC
[2] ACAD SCI CZECH REPUBL, J HEYROVSKY INST PHYS CHEM, PRAGUE 18223 8, CZECH REPUBLIC
来源：
COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 1997年 / 62卷 / 08期
关键词：
humic substances; quenching; excited states; photooxidative degradation; chlorophenols;
D O I：
10.1135/cccc19971159
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Alteration of photochemical properties of humic substances (HS) by the addition of metals abundant in natural waters has been investigated. Excited HS states have been characterized by fluorescence spectra and by laser kinetic spectroscopy. The effect of Cu2+, Fe2+, and Mn2+ has been explained in terms of static quenching of the HS excited states. In agreement with this, the metal ions were found to inhibit HS sensitized photooxidative degradation of chlorophenols.
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页码：1159 / 1168
页数：10
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