The Effect of Major Ions and Dissolved Organic Matter on Complexation and Toxicity of Dissolved Thallium to Daphnia magna

2019 ◽  
Vol 38 (11) ◽  
pp. 2472-2479
Author(s):  
Andrew H. Nagel ◽  
Chad W. Cuss ◽  
Greg G. Goss ◽  
William Shotyk ◽  
Chris N. Glover
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Daphnia Magna ◽  
Major Ions

Dissolved organic matter modulating the uptake, biotransformation, and elimination rates of pyrene in Daphnia magna

2010 ◽  
Vol 29 (12) ◽  
pp. 2783-2791 ◽  
Author(s):  
Anna-Maija Ruotsalainen ◽  
Jarkko Akkanen ◽  
Jussi V.K. Kukkonen
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Daphnia Magna

Photolysis- and Dissolved Organic Matter-Induced Toxicity of Triclocarban to Daphnia magna

2017 ◽  
Vol 4 (11) ◽  
pp. 457-462 ◽  
Author(s):  
Katie A. Albanese ◽  
Roman P. Lanno ◽  
Christopher M. Hadad ◽  
Yu-Ping Chin
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Daphnia Magna

EFFECT OF DISSOLVED ORGANIC MATTER SOURCE ON ACUTE COPPER TOXICITY TO DAPHNIA MAGNA

2004 ◽  
Vol 23 (5) ◽  
pp. 1248 ◽  
Author(s):  
Karel A.C. De Schamphelaere ◽  
Flavio M. Vasconcelos ◽  
Filip M.G. Tack ◽  
Herbert E. Allen ◽  
Colin R. Janssen
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Daphnia Magna ◽  
Copper Toxicity ◽  
Matter Source ◽  
Organic Matter Source

COPPER TOXICITY IN RELATION TO SURFACE WATER-DISSOLVED ORGANIC MATTER: BIOLOGICAL EFFECTS TO DAPHNIA MAGNA

2004 ◽  
Vol 23 (12) ◽  
pp. 2971 ◽  
Author(s):  
Kees J.M. Kramer ◽  
Robbert G. Jak ◽  
Bert van Hattum ◽  
Ria N. Hooftman ◽  
John J.G. Zwolsman
Keyword(s):  
Organic Matter ◽  
Surface Water ◽  
Dissolved Organic Matter ◽  
Daphnia Magna ◽  
Biological Effects ◽  
Copper Toxicity

EFFECTS OF THE PRESENCE AND ABSENCE OF VARIOUS FRACTIONS OF DISSOLVED ORGANIC MATTER ON THE TOXICITY OF FENVALERATE TO DAPHNIA MAGNA

1993 ◽  
Vol 12 (1) ◽  
pp. 167 ◽  
Author(s):  
Valerie A. Hodge ◽  
Gary T. Fan ◽  
Keith R. Solomon ◽  
Narinder K. Kaushik ◽  
Gary G. Leppard ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Daphnia Magna ◽  
Presence And Absence

scholarly journals Optical Properties of Dissolved Organic Matter and Controlling Factors in Dianchi Lake Waters

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1967 ◽  
Author(s):  
Min Xiao ◽  
Fengchang Wu ◽  
Yuanbi Yi ◽  
Zenglei Han ◽  
Zhongliang Wang
Keyword(s):  
Molecular Weight ◽  
Organic Matter ◽  
Optical Properties ◽  
Dissolved Organic Matter ◽  
Pore Water ◽  
Major Ions ◽  
Dianchi Lake ◽  
Organic Carbon Content ◽  
Sediment Layer ◽  
Lake Site

Characterization of dissolved organic matter (DOM) is useful in understanding environment quality and carbon cycling in the lake system. In this study, the fluorescence of DOM, major ions, and nutrients in water were investigated to understand the sources and the transformation of DOM in Dianchi Lake, the sixth largest freshwater lake in China. The dissolved organic carbon content in water above the deposition layer was higher than 5 mg C∙L−1 but lower than that in pore water. Two primary components of humic (C1) and protein-like components (C2) were identified using parallel factor (PARAFAC) modeling on sample fluorescence spectra. Organic components were related to mineral structures, and encapsulation of bacterial or algal cells into particulates could be disintegrated to release DOM. The aromaticity and the hydrophobicity of optical properties were regulated by percentages of chromophores (CDOM) of DOM in surface water, whereas by percentages of fluorophores (FDOM) in DOM in pore water, the underlying water layer was defined as a belt of transition. The molecular weight enhanced with percentages of C1 in CDOM increased in water above the sediment layer and the pore water at the northern lake site, but molecular weight attenuated with percentages decreased in pore water at the southern lake site. DOM not only originated from particulate decomposition but also derived from internal transformation among different, dissolved organic molecules. Small molecules were aggregated into larger ones, and, conversely, large molecules decomposed into small sizes. Another speculation is that dissolved molecules adsorbed or were encapsulated into particulates or were degraded and released into dissolved phases. The precise factors regulated composition, structure, and spectral properties of dissolved organic matter in the Dianchi Lake. This study highlights that sources of DOM and transformation mechanisms in the lake water could be correlated with nutrients and primary geochemical factors for mobility and distribution in different water compartments.

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