scholarly journals Peat Soil Humic Acid Immobilization on Silica Gel and Its Application as an Adsorbent for the Selective Adsorption of Copper

2006 ◽  
Vol 4 ◽  
pp. 602-608 ◽  
Author(s):  
Sri Juari Santosa ◽  
Sri Sudiono ◽  
Sri Sujandi
Keyword(s):  
Humic Acid ◽  
Silica Gel ◽  
Selective Adsorption ◽  
Peat Soil ◽  
Soil Humic Acid

scholarly journals The Anti-Inflammatory Activity of Humic Acid from Borneo Peat Soil in Mice

2020 ◽  
Vol 25 (1) ◽  
pp. 22
Author(s):  
Rusliandi Rusliandi ◽  
Diah Wulandari Rousdy ◽  
Mukarlina Mukarlina
Keyword(s):  
Humic Acid ◽  
Block Design ◽  
Peat Soil ◽  
Positive Control ◽  
Negative Control ◽  
Edema Volume ◽  
Randomized Block Design ◽  
Soil Humic Acid ◽  
Anti Inflammatory ◽  
Edema Inhibition

Humic acid is a humus compound found in peat soil. Humic acid can potentially be used as an anti-inflammatory compound. This study aimed to determine the effect of humic acid on the volume of foot mice edema and to find the best dose that can suppress the degree of edema volume. The animal object was Swiss mice weighing 25-30 grams and 3 months old. The study used Randomized Block Design (RBD) with positive control, negative control and humic acid treatment with dose 62.5 mg kg-1BW, 125 mg kg-1BW, and 250 mg kg-1BW. The result of this research showed that edema inhibition by the administration of humic acid dose 62,5; 125; 250 mg kg-1 had inflammatory inhibition percentage 2.67%, 13.34%, and 20.01% respectively in 5-hour observation. The best dose of humic acid to suppress inflammation in the mice's paw is a humic acid dose of 250 mg kg-1 compared with value 23.3% of sodium diclofenac as the positive control.

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.

Synthesis and chromatographic characterization of [Tc-99m]technetium-humic acid species

2000 ◽  
Vol 88 (2) ◽  
Author(s):  
D. Rößler ◽  
K. Franke ◽  
R. Süß ◽  
E. Becker ◽  
H. Kupsch
Keyword(s):  
Humic Acid ◽  
Stannous Chloride ◽  
Gel Permeation Chromatography ◽  
Paper Electrophoresis ◽  
Gel Permeation ◽  
Soil Humic Acid ◽  
Chromatographic Characterization ◽  
Ph Dependent ◽  
Layer Chromatography

A natural moor soil humic acid (HA) was labeled with Tc-99m via reduction of pertechnetate with stannous chloride. The humic acid species obtained were characterized by thin layer chromatography (TLC), gel permeation chromatography (GPC), sequential chromatographic analysis (SCA), paper electrophoresis and micropore filtration. Labeling was found to take place in all ranges of molecular weight. Due to the complex humic acid composition and the formation of hydroxo species the labeling yields strongly depend on the separation conditions, ranging from 42% to 80%. The pH-dependent distribution of mobile and immobile species was determined by SCA for HTcO

scholarly journals Molecular characterization of an end-residue of humeomics applied to a soil humic acid

RSC Advances ◽  
2014 ◽  
Vol 4 (45) ◽  
pp. 23658-23665 ◽  
Author(s):  
A. Nebbioso ◽  
A. Piccolo ◽  
M. Lamshöft ◽  
M. Spiteller
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Molecular Characterization ◽  
Natural Organic Matter ◽  
Molecular Composition ◽  
Chemical Fractionation ◽  
Soil Humic Acid

Humeomics encompasses step-wise chemical fractionation and instrumental determination to fully characterize the heterogeneous molecular composition of natural organic matter.

Characteristics of soil humic acid fractions separated by ultrafiltration

1997 ◽  
Vol 28 (9-10) ◽  
pp. 787-796 ◽  
Author(s):  
J. C. Lobartini ◽  
G. A. Orioli ◽  
K. H. Tan
Keyword(s):  
Humic Acid ◽  
Soil Humic Acid

Structure of Soil Humic Acid. II. Some Copper Oxide Oxidation Products1-3

1962 ◽  
Vol 27 (1) ◽  
pp. 170-174 ◽  
Author(s):  
GISELE GREENE ◽  
CORNELIUS STEELINK
Keyword(s):  
Humic Acid ◽  
Copper Oxide ◽  
Soil Humic Acid
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