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Journal of Thermal Analysis and Calorimetry
Authors: Alexandre Prado, Aline Moura, Rômulo Andrade, Igor Pescara, Valéria Ferreira, Elaine Faria, Augusto de Oliveira, Esmeralda Okino, and Luiz Zara

Jacintho GVM . Interaction of indigo carmine dye with silica modified with humic acids at solid/liquid interface . Surf Sci. 2003 ; 542 : 276 – 82 http://dx.doi.org/10.1016/S0039-6028(03)00990-7 . 4

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of mercury from aqueous solution by duckweed: the effect of pH, copper, and humic acid. J. Environ. Health Sci. , 24 , 135–146. Robinson J. W. Uptake of mercury from aqueous

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Journal of Thermal Analysis and Calorimetry
Authors: Marisa S. Crespi, Quézia V. Martins, Sonia de Almeida, Hernane S. Barud, Marcelo Kobelnik, and Clóvis A. Ribeiro

2848, 1456, 2900 C–H Aliphatic methylene from humic acids or lignin 1646 C=O Amides and/or carboxylates

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Agrokémia és Talajtan
Authors: Anita Szabó, Klára Pokovai, Péter Ragályi, Márk Rékási, Renáta Sándor, Botond Bernhardt, József Koncz, Rita Kremper, and Péter Csathó

. O ndrasek , G. , R engel , Z. , R omic , D. , 2018 . Humic acids decrease uptake and distribution of trace metals, but not the growth of radish exposed to cadmium toxicity . Ecotoxicology and Environmental Safety . 151 . 55 – 61

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.1016/0016-2361(83)90028-5 . 13. Calemma , V , Iwanski , P , Rausa , R , Girardi , E 1994 Changes in coal structure accompanying the formation of regenerated humic acids during air oxidation . Fuel 73 : 700 – 707 10.1016/0016-2361(94)90012-4 .

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Journal of Thermal Analysis and Calorimetry
Authors: N. Barros, J. Salgado, M. Villanueva, J. Rodriquez-Añón, J. Proupin, S. Feijóo, and M. Martín-Pastor

ranged from 0.01 to 3.37 mg per gram of soil. Literature gives values from 0.1 to 6.5 mg in humic acids and relates the quantity of aliphatic C with degree of soil humification, that decreases as humification increases [ 15 ]. In this article, it is found

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centrifugated to separate coagulated humic acids (HA). The non-coagulated fraction with H 2 SO 4 is referred as fulvic acids (FA). The C contents of the THS ( C THS ), HA ( C HA ) and FA ( C FA ) were determined by the Walkley–Black method [ 14

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. C HEFETZ , B. , A DANI , F. , G ENEVINI , P. , T AMBONE , F. , H ADAR , Y. & C HEN , Y. , 1998 a. Humic-acid transformation during composting of municipal solid waste . Journal of Environmental Quality . 27 . 794 – 800

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isotopic characterization ( 13 C- 15 N) of humic acids from different origins . Appl Geochem 2005 ; 20 : 537 – 44 . 39. Plante AF , Pernes M , Chenu C . Changes

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. Mjengera and Mkongo [ 32 ] reported that BC prepared in 400 °C could be used to remove fluoride from water. This sorbent can also be used as a catalyst in ozonation systems for humic acid removal from water [ 33 ]. Analysis of surface

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