Comparison of Hg concentrations in ombrotrophic peat and corresponding humic acids, and implications for the use of bogs as archives of atmospheric Hg deposition

Geoderma ◽  
2009 ◽  
Vol 148 (3-4) ◽  
pp. 399-404 ◽  
Author(s):  
C. Zaccone ◽  
A. Santoro ◽  
C. Cocozza ◽  
R. Terzano ◽  
W. Shotyk ◽  
...  
Keyword(s):  
Humic Acids ◽  
Ombrotrophic Peat

Characterization and acid–base properties of fulvic and humic acids isolated from two horizons of an ombrotrophic peat bog

Geoderma ◽  
2005 ◽  
Vol 126 (3-4) ◽  
pp. 367-374 ◽  
Author(s):  
D. Gondar ◽  
R. Lopez ◽  
S. Fiol ◽  
J.M. Antelo ◽  
F. Arce
Keyword(s):  
Humic Acids ◽  
Peat Bog ◽  
Acid Base ◽  
Ombrotrophic Peat ◽  
Base Properties

Copper binding by peat fulvic and humic acids extracted from two horizons of an ombrotrophic peat bog

Chemosphere ◽  
2006 ◽  
Vol 63 (1) ◽  
pp. 82-88 ◽  
Author(s):  
Dora Gondar ◽  
Ana Iglesias ◽  
Rocio López ◽  
Sarah Fiol ◽  
Juan M. Antelo ◽  
...  
Keyword(s):  
Humic Acids ◽  
Peat Bog ◽  
Copper Binding ◽  
Ombrotrophic Peat

Humic acids role in Br accumulation along two ombrotrophic peat bog profiles

Geoderma ◽  
2008 ◽  
Vol 146 (1-2) ◽  
pp. 26-31 ◽  
Author(s):  
C. Zaccone ◽  
C. Cocozza ◽  
W. Shotyk ◽  
T.M. Miano
Keyword(s):  
Humic Acids ◽  
Peat Bog ◽  
Ombrotrophic Peat

Atmospheric deposition of arsenic and selenium in ombrotrophic peat bogs

2003 ◽  
Vol 107 ◽  
pp. 1427-1427 ◽  
Author(s):  
J. Frank ◽  
M. Krachler ◽  
W. Shotyk
Keyword(s):  
Atmospheric Deposition ◽  
Peat Bogs ◽  
Ombrotrophic Peat

ROLE OF ADDED PHOSPHOGYPSUM AND HUMIC ACIDS IN THE KINETIC RELEASE OF SALT FROM SALT AFFECTED SOIL (SALINE – SODIC)

2020 ◽  
pp. 15-27
Keyword(s):  
Electrical Conductivity ◽  
Humic Acids ◽  
Release Rate ◽  
Release Kinetics ◽  
Sodium Adsorption Ratio ◽  
Salt Affected Soil ◽  
Two Factors ◽  
Dissolved Ions ◽  
Kinetic Release

In order to study the effect of phosphogypsum and humic acids in the kinetic release of salt from salt-affected soil, a laboratory experiment was conducted in which columns made from solid polyethylene were 60.0 cm high and 7.1 cm in diameter. The columns were filled with soil so that the depth of the soil was 30 cm inside the column, the experiment included two factors, the first factor was phosphogypsum and was added at levels 0, 5, 10 and 15 tons ha-1 and the second-factor humic acids were added at levels 0, 50, 100 and 150 kg ha-1 by mixing them with the first 5 cm of column soil and one repeater per treatment. The continuous leaching method was used by using an electrolytic well water 2.72 dS m-1. Collect the leachate daily and continue the leaching process until the arrival of the electrical conductivity of the filtration of leaching up to 3-5 dS m-1. The electrical conductivity and the concentration of positive dissolved ions (Ca, Mg, Na) were estimated in leachate and the sodium adsorption ratio (SAR) was calculated. The results showed that the best equation for describing release kinetics of the salts and sodium adsorption ratio in soil over time is the diffusion equation. Increasing the level of addition of phosphogypsum and humic acids increased the constant release velocity (K) of salts and the sodium adsorption ratio. The interaction between phosphogypsum and humic acids was also affected by the constant release velocity of salts and the sodium adsorption ratio. The constant release velocity (K) of the salts and the sodium adsorption ratio at any level of addition of phosphogypsum increased with the addition of humic acids. The highest salts release rate was 216.57 in PG3HA3, while the lowest rate was 149.48 in PG0HA0. The highest release rate of sodium adsorption ratio was 206.09 in PG3HA3, while the lowest rate was 117.23 in PG0HA0.

Peculiarities of the Influence of Humic Acids on the Development of Plankton Algae

2011 ◽  
Vol 47 (1) ◽  
pp. 97-104
Author(s):  
V. A. Medved' ◽  
P. D. Klochenko ◽  
O. V. Vasilenko ◽  
T. A. Vasilchuk
Keyword(s):  
Humic Acids
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