Spatial and seasonal patterns of fluorescent organic matter in Lake Kinneret (Sea of Galilee) and its catchment basin

被引：107

作者：

Borisover, Mikhail ^{[1
]}

Laor, Yael ^{[2
]}

Parparov, Arkady ^{[3
]}

Bukhanovsky, Nadezhda ^{[1
]}

Lado, Marcos ^{[4
]}

机构：

[1] Agr Res Org, Volcani Ctr, Inst Soil Water & Environm Sci, IL-50250 Bet Dagan, Israel

[2] Agr Res Org, Newe Yaar Res Ctr, Inst Soil Water & Environm Sci, IL-30095 Ramat Yishay, Israel

[3] Israel Oceanog & Limnol Res, Yigal Allon Limnol Lab, IL-14950 Migdal, Israel

[4] Univ A Coruna, Fac Sci, Area Soil Sci, La Coruna 15071, Spain

来源：

WATER RESEARCH | 2009年 / 43卷 / 12期

关键词：

Natural organic matter (NOM); Fluorescence; Excitation emission matrix (EEM); Lake Kinneret ("Sea of Galilee"); Stratification; Parallel factor analysis (PARAFAC); OPTICAL-PROPERTIES; MOLECULAR-WEIGHT; ATLANTIC-OCEAN; FULVIC-ACID; WATER; EXCITATION; MARINE; DOM; ENVIRONMENTS; SPECTROSCOPY;

D O I：

10.1016/j.watres.2009.04.039

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Lake Kinneret (Sea of Galilee) is one of the major water resources in Israel. The origin and characteristics of natural organic matter (NOM) in the lake and its tributary rivers were studied using fluorescence excitation emission matrices (EEM) and parallel factor analysis. Two humic-like and one proteinous components were sufficient to describe EEM variability among 167 water samples collected between 2/2005 and 9/2006. The two humic-like components showed different relations in lake and riverine samples. Their vertical distribution in the lake was affected by seasonal stratification and distance from water surface, presumably reflecting the release of humic-like matter from sediments, its production via NOM transformation in the bottom layers, and its photodegradation in the upper layers. Vertical distribution of the proteinous component, indicating biological activity at upper water layers, did not correlate with that of the humic-like components. Dissolved organic carbon concentrations did not show any vertical stratification, emphasizing the power of EEM to explore NOM dynamics. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：3104 / 3116

页数：13

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