Results 11 to 20 of about 8,712 (222)

Assessment of micronutrient extractants from soils of Paraná, Brazil [PDF]

Revista Brasileira de Ciência do Solo, 2011
In Brazil, plant-available micronutrients in the soil can be determined by several chemical extractants, the most common of which are dilute acid and chelating solutions. The purpose of this study was to assess the extractants 0.1 mol L-1 HCl, Mehlich-1,
Marcos Vinicius Mansano Sarto, Fábio Steiner, Maria do Carmo Lana   +2 more
doaj   +2 more sources

Chelating Extractants for Metals

Metals, 2022
In the present review, works on the classes of chelating extractants for metals, compounds with several amide and carboxyl groups, azomethines, oximes, macrocyclic compounds (crown ethers and calixarenes), phenanthroline derivatives, and others are ...
Pavel Yudaev, Evgeniy Chistyakov
doaj   +2 more sources

Extraction Performance and Radiation Stability of Phosphorus-Containing Extractants

He huaxue yu fangshe huaxue
At present, the research on spent fuel reprocessing technology, especially the research on solvent extraction technology has been paid more and more attention.
GUO Qi-qi, CHEN Yi-zhi, JIANG De-xiang, ZHANG Peng, HE Hui, YE Guo-an, LIN Ming-zhang   +6 more
doaj   +2 more sources

Extractants for rare earth metals [PDF]

Chimica Techno Acta, 2016
The separation of trivalent rare earth metals is perhaps the most serious challenge associated with a closed fuel cycle. The choice of ligand as extractant, which must be selective and efficient in conditions of high radiation environment, plays an ...
V. V. Kurysheva, E. A. Ivanova, P. E. Prokhorova   +2 more
doaj   +2 more sources

Molecular design of phenolic type extractants

Тонкие химические технологии, 2010
A method of optimization of new extractants' structure with the use of desirability function has been developed. The desirability function had been proposed before by Harrington for optimization of processes with several response functions.
Yu. S. Suntsova, D. V. Bychenkov, S. A. Semenov, A. M. Reznik   +3 more
doaj   +1 more source

Determination of the antioxidant additive “Ionol” in transformer oil by gas chromatographic method [PDF]

E3S Web of Conferences, 2021
Transformer oil is widely used in power oil-filled electrical equipment, which is an insulating and diagnostic medium. During the operation of power transformers, its operational and dielectric properties deteriorate.
Duy Hung Nguyen, Taneva A.V., Novikov V.F.   +2 more
doaj   +1 more source

Structure Investigation of La, Y, and Nd Complexes in Solvent Extraction Process with Liquid Phosphine Oxide, Phosphinic Acid, and Amine Extractants

Metals, 2023
The main challenge in separating REEs through hydrometallurgical processes is their chemical similarities. Despite the literature widely presenting the possibilities for organic extractants, there is a lack of evaluation of the structures formed between ...
Amilton Barbosa Botelho Junior, Natália Olim Martins da Silva, Jorge Alberto Soares Tenório, Denise Crocce Romano Espinosa   +3 more
doaj   +1 more source

Effect of the Extractant Properties on Extraction Performance of Coal Liquefied Oil Residue

Taiyuan Ligong Daxue xuebao, 2023
To solve the problem of efficient extraction of coal liquefied oil residue, the extractants with different properties, such as aliphatic hydrocarbon, aromatic hydrocarbon, oxygen-containing compounds, and simulated coking benzene, were selected for the ...
Yang LIU, Jianbo HUANG, Guochun YAN, Jianli WANG, Weimin LU, Yi LI, Lunjing YAN, Junjie LIAO, Weiren BAO, Jiancheng WANG   +9 more
doaj   +1 more source

Eficiência de extratores de potássio disponível em solos do estado da Paraíba com graus de desenvolvimento pedogenético diferentes Efficiency of available potassium extractants in soils of Paraiba State with different degrees of pedogenetic development

Revista Brasileira de Ciência do Solo, 2010
A disponibilidade de potássio (K) às plantas depende dos teores das formas de K nos solos (K não trocável, K trocável e K solúvel), os quais variam com o grau de desenvolvimento pedogenético dos solos.
Jailma dos Santos de Medeiros, Fábio Henrique Tavares de Oliveira, Jandeilson Alves de Arruda, Montesquieu da Silva Vieira, Maurício Paulo Ferreira Fontes   +4 more
doaj   +1 more source

Influência da escória silicatada na acidez do solo e na produtividade de grãos do arroz de terras altas Influence of calcium silicate slag on soil acidity and upland rice grain yield

Ciência e Agrotecnologia, 2004
Apesar dos elevados teores de SiO2 total geralmente encontrados nos solos brasileiros, o teor na solução do solo pode ser baixo, em conseqüência do processo de dessilicificação que ocorre durante a intemperização dos solos.
Morel Pereira Barbosa Filho, Francisco José Pfeilsticker Zimmermann, Osmira Fátima da Silva   +2 more
doaj   +1 more source