HETEROGENEITY IN PHYSICOCHEMICAL PROPERTIES EXPLAINS DIFFERENCES IN SILVER TOXICITY AMELIORATION BY NATURAL ORGANIC MATTER TO DAPHNIA MAGNA

2005 ◽  
Vol 24 (11) ◽  
pp. 2941 ◽  
Author(s):  
Chris N. Glover ◽  
Sonia K. Sharma ◽  
Chris M. Wood
Keyword(s):  
Organic Matter ◽  
Physicochemical Properties ◽  
Daphnia Magna ◽  
Natural Organic Matter ◽  
Silver Toxicity

scholarly journals Tungsten carbide nanoparticles in simulated surface water with natural organic matter: dissolution, agglomeration, sedimentation and interaction with Daphnia magna

2017 ◽  
Vol 4 (4) ◽  
pp. 886-894 ◽  
Author(s):  
Jonas Hedberg ◽  
Mikael T. Ekvall ◽  
Lars-Anders Hansson ◽  
Tommy Cedervall ◽  
Inger Odnevall Wallinder
Keyword(s):  
Organic Matter ◽  
Surface Water ◽  
Acute Toxicity ◽  
Tungsten Carbide ◽  
Daphnia Magna ◽  
Natural Organic Matter ◽  
Simulated Surface

Nano-sized tungsten carbide shows no acute toxicity for Daphnia magna and agglomeration and sedimentation due to the lack of interaction with NOM.

Evaluation of the acute toxicity on Daphnia magna throughout the catalytic wet peroxide oxidation of dissolved natural organic matter

2020 ◽  
Vol 198 ◽  
pp. 272-283
Author(s):  
Camilo L. Guerrero-Romero ◽  
Dolly Revelo ◽  
Alejandra Caicedo ◽  
Marcela Botina ◽  
Ana M. García-Mora ◽  
...  
Keyword(s):  
Organic Matter ◽  
Acute Toxicity ◽  
Daphnia Magna ◽  
Natural Organic Matter ◽  
Peroxide Oxidation ◽  
Wet Peroxide Oxidation ◽  
Catalytic Wet Peroxide Oxidation

Characterization of dissolved organic matter (DOM) extracted from soils by hot water percolation (HWP)

2010 ◽  
Vol 59 (1) ◽  
pp. 99-108 ◽  
Author(s):  
M. Takács ◽  
Gy. Füleky
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Natural Organic Matter ◽  
Extraction Methods ◽  
Soil Samples ◽  
Hot Water ◽  
Soil Extracts ◽  
Water Percolation ◽  
Soil Humic Acid

The Hot Water Percolation (HWP) technique for preparing soil extracts has several advantages: it is easily carried out, fast, and several parameters can be measured from the same solution. The object of this study was to examine the possible use of HWP extracts for the characterization of soil organic matter. The HPLC-SEC chromatograms, UV-VIS and fluorescence properties of the HWP extracts were studied and the results were compared with those of the International Humic Substances Society (IHSS) Soil Humic Acid (HA), IHSS Soil Fulvic Acid (FA) and IHSS Suwannee Natural Organic Matter (NOM) standards as well as their HA counterparts isolated by traditional extraction methods from the original soil samples. The DOM of the HWP solution is probably a mixture of organic materials, which have some characteristics similar to the Soil FA fractions and NOM. The HWP extracted organic material can be studied and characterized using simple techniques, like UV-VIS and fluorescence spectroscopy.

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