New Organomineral Complex from Humic Substances Extracted from Poultry Wastes: Synthesis, Characterization and Controlled Release Study

被引：32

作者：

Santos, Amanda M. P. ^{[1
]}

Bertoli, Alexandre C. ^{[1
,2
]}

Borges, Ana Carolina C. P. ^{[1
]}

Gomes, Raphael A. B. ^{[1
]}

Garcia, Jerusa S. ^{[1
]}

Trevisan, Marcello G. ^{[1
]}

机构：

[1] Univ Fed Alfenas UNIFAL MG, Inst Quim, BR-37130000 Alfenas, MG, Brazil

[2] Univ Fed Minas Gerais, Dept Quim, BR-31270901 Belo Horizonte, MG, Brazil

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2018年 / 29卷 / 01期

关键词：

humic substances; poultry wastes; organomineral complexes; spectroscopy; controlled release; SOIL ORGANIC-MATTER; DELIVERY-SYSTEMS; DRUG-RELEASE; HIGH ANDES; NANOPARTICLES; ACIDS; FERTILIZERS; MECHANISMS;

D O I：

10.21577/0103-5053.20170122

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The present study reports the synthesis and characterization of complexes formed among humic (HA) and fulvic acids (FA) derived from poultry wastes and ions Cu2+, Fe2+ and Zn2+. The release of such metals in a buffer solution simulating the soil solution was also evaluated. After complexation, the Fourier transform infrared (FTIR) spectra presented alterations in the absorption bands related to changes in the humic structure, thus indicating the complexation with phenolic and carboxylic groups. Thermogravimetric analyses demonstrated that complexed metals decreased the thermal stability of humic substances. Analyses by atomic absorption spectroscopy (AAS) demonstrated that the release of metals is directly related to the origin of the sample, type of interaction of metal and humic structure and conditions of the medium in which the complex is inserted.

引用

页码：140 / 150

页数：11

共 38 条

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