Results 41 to 50 of about 64,085 (311)

Tungsten–humic substances complexation

Carbon Research, 2022
AbstractTungsten (W) is an emerging contaminant whose environmental behaviors remain rather sketchy, narrow, and fragmentary. The mobility and fate of W in the aquatic environments may be influenced by naturally dissolved organic matter (DOM), nevertheless, no studies have addressed how W is bound to DOM.
Zelin Xu, Xin Liu, Jincheng Peng, Chenchen Qu, Yifan Chen, Ming Zhang, Ding Liang, Ming Lei, Boqing Tie, Huihui Du   +9 more
openaire   +1 more source

Spin‐Dependent Generation of Surface‐Bound Radicals Toward Selective and Long‐Lasting Water Purification

Advanced Functional Materials, EarlyView.
This study develops a novel atomic engineering strategy to fine‐tune the spin state of α‐Fe2O3 catalysts toward a medium‐spin state, thereby modulating peroxymonosulfate activation and selectively yielding surface‐bound radicals. Compared with free radicals, surface‐bound radicals exhibit moderated oxidation potential, extended lifespan, surface ...
Shuyu Wang, Zhonglin Chen, Jimin Shen, Pengwei Yan, Jing Kang, Binyuan Wang, Shengxin Zhao, Xiaoguang Duan   +7 more
wiley   +1 more source

Humic Substances Alter Ammonia Production and the Microbial Populations Within a RUSITEC Fed a Mixed Hay – Concentrate Diet

Frontiers in Microbiology, 2018
Humic substances are a novel feed additive which may have the potential to mitigate enteric methane (CH4) production from ruminants as well as enhance microbial activity in the rumen.
Stephanie A. Terry, Aline F. O. Ramos, Devin B. Holman, Tim A. McAllister, Gerhard Breves, Alexandre V. Chaves   +5 more
doaj   +1 more source

Application of experimental design approach for optimization of the photocatalytic degradation of humic substances in aqueous solution using immobilized ZnO nanoparticles [PDF]

Journal of Advances in Environmental Health Research, 2015
Degradation of humic substances in water is important due to its adverse effects on the environment and human health. The aim of this study was modeling and investigating the degradation of humic substances in water using immobilized ZnO as a catalyst ...
Hooshyar Hossini, Mahdi Safari, Reza Rezaee, Reza Darvishi Cheshmeh Soltani, Omid Giahi, Yahya Zandsalimi   +5 more
doaj   +1 more source

Application of Humic Substances in Agricultural Industry

Agronomy, 2022
Increasing agricultural productivity and, in particular, the productivity of livestock is one of the primary tasks in the present stage of development of society.
Olga Bezuglova, Aleksandr Klimenko
doaj   +1 more source

Study of Hydrophobic Domains in Humic Acids [PDF]

, 2008
Fyzikálně-chemická povaha hydrofobních domén huminových kyselin byla studována z několika hledisek. K objasnění významu fluorescenčních spekter byly vzorky podrobeny sekvenční frakcionaci, která pomohla k částečnému objasnění vlivu vodorozpustných složek,
Čechlovská, Hana
core  

Physiological Effects of Five Different Marine Natural Organic Matters (NOMs) and Three Different Metals (Cu, Pb, Zn) on Early Life Stages of the Blue Mussel (Mytilus galloprovincialis) [PDF]

, 2017
Metals are present in aquatic environments as a result of natural and anthropogenic inputs, and may induce toxicity to organisms. One of the main factors that influence this toxicity in fresh water is natural organic matter (NOM) but all NOMs are not the
Basso Jorge, Marianna, Bianchini, Adalto, Diamond, Rachael L, Sega Nogueira, Lygia, Smith, Scott, Wood, Chris M.   +5 more
core   +3 more sources

Breathable Graphene Oxide‐Polymer Composite Membranes With Two‐Step Barrier Mechanism Against Nerve Agents

Advanced Functional Materials, EarlyView.
ABSTRACT Breathable membranes that reject chemical warfare agents (CWAs) are required for next‐generation protective apparel. A dual‐function graphene oxide (GO)‐polyamine architecture is introduced that addresses the long‐standing tradeoff between vapor transmission and CWA selectivity.
Hyungjun Kim, Chanui Lee, Keunhong Jeong, Seonggi Kim, Hyunju Shin, Sunghan Kim, Youngho Jin   +6 more
wiley   +1 more source

The effect of pH on the binding of heavy metal ions with humic substances and hymatomelanic acids of peats

Учёные записки Казанского университета: Серия Естественные науки, 2017
The values of the dissociation constants (–COOH and –OH) of humic substances and hymatomelanic acids have been determined by the potentiometric titration method. It has been shown that hymatomelanic acids are enriched in phenolic groups compared with the
E.D. Dmitrieva, K.V. Siundiukova, M.M. Leontieva, N.N. Glebov   +3 more
doaj  

Atmospheric HULIS: How humic-like are they? A comprehensive and critical review [PDF]

Atmospheric Chemistry and Physics, 2006
A class of organic molecules extracted from atmospheric aerosol particles and isolated from fog and cloud water has been termed HUmic-LIke Substances (HULIS) due to a certain resemblance to terrestrial and aquatic humic and fulvic acids.
E. R. Graber, Y. Rudich
doaj