Use of the cation exchange equilibrium method for the determination of stability constants of Co(II) with soil humic and fulvic acids

1999 ◽  
Vol 241 (3) ◽  
pp. 651-654 ◽  
Author(s):  
J. Z. Du ◽  
W. J. Li ◽  
H. Q. Zhang ◽  
X. D. Wang ◽  
Z. J. You ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Stability Constants ◽  
Fulvic Acids ◽  
Exchange Equilibrium ◽  
Humic And Fulvic Acids ◽  
Equilibrium Method

Studies of aluminium complexation to humic and fulvic acids using a method for the determination of quickly reacting aluminium

1995 ◽  
Vol 84 (1-2) ◽  
pp. 103-116 ◽  
Author(s):  
N. Clarke ◽  
L. -G. Danielsson ◽  
A. Spar�n
Keyword(s):  
Fulvic Acids ◽  
Humic And Fulvic Acids

scholarly journals THE EFFECTIVENESS OF COMPOST, HUMIC ACID AND PURE FULVATE ON IMPROVEMENT OF ULTISOL SOIL CHEMICAL PROPERTIES

2021 ◽  
pp. 247-254
Author(s):  
Resman ◽  
Sahta Ginting ◽  
Muhammad Tufaila ◽  
Fransiscus Suramas Rembon ◽  
Halim
Keyword(s):  
Humic Acid ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Chemical Properties ◽  
Fulvic Acids ◽  
Exchange Capacity ◽  
Humic And Fulvic Acids ◽  
Total N ◽  
Organic C ◽  
Exchangeable Al

The research aimed to determine the effectiveness of compost containing humic and fulvic acids, and pure humic and fulvic acids in increasing of Ultisol soil chemical properties. The research design used a randomized block design (RBD), consisting of 10 treatments, namely K0: 0 g polybag-1, KO1: 500 g polybag-1, KO2: 500 g polybag-1, KO3: 500 g polybag-1, KO4: 500 g polybag-1, KO5: 500 g polybag-1, KO6: 500 g polybag-1, KO7: 500 g of polybags-1, H: 50 g of polybag-1, A: 500 g polybag-1. Each treatment was repeated three times and obtained 30 treatment units. The results showed that pH H2O (K0: 4.49, KO1: 5.64, KO2: 5.47, KO3: 5.43, KO4: 5.51, KO5: 5.39, KO6: 5.48, KO7: 6.17, H: 5.06, F: 5.15), total-N (%) (K0: 0.13, KO1: 0.17, KO2: 0.18, KO3: 0.30, KO4: 0.25, KO5: 0.24, KO6: 0.29, KO7: 0.36, H: 0.16, F: 0.14), organic-C (%) (K0: 1.85, KO1; 2.30, KO2: 2.24, KO3: 2.33, KO4: 2.62, KO5: 2.25, KO6: 2.27, KO7: 2.95, H: 2.32, F: 2.26) , available-P (%) (K0: 2.75, KO1: 3.24, KO2: 3.16, KO3: 3.27, KO4: 3.57, KO5: 3.31, KO6: 3.37, KO7: 3.89, H: 3.10, F: 3.12), exchangeable-Al (me100g-1) (K0: 2.51, KO1: 2.11, KO2: 2.13, KO3: 2.15, KO4: 1.88, KO5: 2.14, KO6: 2.12, KO7: 1.75, H: 2.16, F: 2.17), base saturation (%) (K0: 30.91, KO1: 63.48, KO2: 52.63, KO3: 53.76, KO4: 56.13, KO5: 54.96, KO6: 56.71, KO7: 65.53, H: 39.11, F: 42.76), cation exchange capacity (me100g-1) (K0: 12.76, KO1: 15.64, KO2: 14.86, KO3: 14.35, KO4: 14.13, KO5: 15.01, KO6: 15.50, KO7: 17.94, H: 14.19, F: 13.73). The combined compost treatment of three types of organic matter (Imperata cylindrica + Rice straw + Glincidia sepium) is more effective in increasing the pH, H2O as 37.42%, total-N as 176.92%, Organic-C as 59.46%, available-P as 41.45%, base saturation as 65.53%, cation exchange capacity as 17.94% and exchangeable -Al, Alreduction as 30.28% of ultisol soil. KEY WORDS: compost, humic acid, fulvate, soil chemical, ultisol

scholarly journals Determination of humic and fulvic acids in river waters by concentration with anion exchanger followed by centrifugation.

1989 ◽  
Vol 5 (3) ◽  
pp. 363-365 ◽  
Author(s):  
Tsutomu NOMIZU ◽  
Masaki SANJI ◽  
Masataka HIRAIDE ◽  
Atsushi MIZUIKE
Keyword(s):  
Anion Exchanger ◽  
Fulvic Acids ◽  
Humic And Fulvic Acids ◽  
River Waters

Natural Sulphide Minerals as Sensors for Determination of Total Acidity of Humic and Fulvic Acids

2009 ◽  
Vol 7 (4) ◽  
pp. 523-529
Author(s):  
M. M. Antonijevic ◽  
Z. Simic ◽  
Z. Petrovic
Keyword(s):  
Fulvic Acids ◽  
Total Acidity ◽  
Humic And Fulvic Acids ◽  
Sulphide Minerals
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