Results 1 to 10 of about 5,548,462 (338)

The formation and stripping mechanism of oxide film on stainless steel surfaces

International Journal of Advanced Nuclear Reactor Design and Technology
Typically, equipment in nuclear facilities operating in nitric acid media are made of stainless steel. Retired equipment exhibits relatively high levels of radioactivity, and chemical cleaning is a cost-effective and efficient method for decontamination.
Zhenqi Shen, Guangkai Wang, Fang Bao, Tianhao Liu, Yang Fei, Zhenni Xie, Yuxin Liang, Xincheng Wang   +7 more
doaj   +1 more source

Gamma radiolytic stability of CyMe4BTBP and the effect of nitric acid

Nukleonika, 2015
The highly selective nitrogen donor ligand CyMe4BTBP for An(III) separation by solvent extraction was irradiated in a 60Co γ-source under varying conditions.
Schmidt Holger, Wilden Andreas, Modolo Giuseppe, Švehla Jaroslav, Grüner Bohumir, Ekberg Christian   +5 more
doaj   +1 more source

Nitrosation and Nitration of Fulvic Acid, Peat and Coal with Nitric Acid. [PDF]

PLoS ONE, 2016
Nitrohumic acids, produced from base extraction of coals and peats oxidized with nitric acid, have received considerable attention as soil ammendments in agriculture. The nitration chemistry however is incompletely understood.
Kevin A Thorn, Larry G Cox
doaj   +1 more source

Nitric Acid-Treated Carbon Fibers with Enhanced Hydrophilicity for Candida tropicalis Immobilization in Xylitol Fermentation

Materials, 2016
Nitric acid (HNO3)-treated carbon fiber (CF) rich in hydrophilic groups was applied as a cell-immobilized carrier for xylitol fermentation. Using scanning electron microscopy, we characterized the morphology of the HNO3-treated CF.
Le Wang, Na Liu, Zheng Guo, Dapeng Wu, Weiwei Chen, Z. Chang, Qipeng Yuan, M. Hui, Jinshui Wang   +8 more
semanticscholar   +1 more source

High-Resolution Measurements of SO₂, HNO₃ and HCl at the Urban Environment of Athens, Greece: Levels, Variability and Gas to Particle Partitioning

Atmosphere, 2022
High-resolution measurements of sulfur dioxide (SO2), nitric acid (HNO3), and hydrochloric acid (HCl) were conducted in Athens, Greece, from 2014 to 2016 via a wet rotating annular denuder system paired with an ion chromatograph.
Eleni Liakakou, Luciana Fourtziou, Despina Paraskevopoulou, Orestis Speyer, Maria Lianou, Georgios Grivas, Stelios Myriokefalitakis, Nikolaos Mihalopoulos   +7 more
doaj   +1 more source

A reliable method to prepare milligram size environmental samples to quantify metal(loid)s by high-resolution graphite furnace atomic absorption spectrometry

MethodsX
We searched for an extraction method that would allow a precise quantification of metal(loid)s in milligram-size samples using high-resolution graphite furnace atomic absorption spectrometry (HR-GFAAS).
Patrícia Gomes Costa, Juliana Lemos Dal Pizzol, Yuri Dornelles Zebral, Adalto Bianchini   +3 more
doaj   +1 more source

Acidic Peptizing Agent Effect on Anatase-Rutile Ratio and Photocatalytic Performance of TiO2 Nanoparticles

Nanoscale Research Letters, 2018
TiO2 nanoparticles were synthesized from titanium isopropoxide by a simple peptization method using sulfuric, nitric, and acetic acids. The effect of peptizing acid on physicochemical and photocatalytic properties of TiO2 powders was studied.
Hatem A. Mahmoud, Katabathini Narasimharao, Tarek T. Ali, Kamal M. S. Khalil   +3 more
doaj   +1 more source

Determination of Antimony Content in Antimony Ores by Inductively Coupled Plasma-Optical Emission Spectrometry

Yankuang ceshi, 2019
BACKGROUND Chemical phase analysis of antimony ores involves three mineral phases:valentinite, stibnite and insoluble antimonate. Solvents used for extracting various antimony mineral phases are different.
XIONG Ying, DONG Ya-ni, PEI Ruo-hui, CUI Chang-zheng   +3 more
doaj   +1 more source

Nitric acid from volcanoes

Earth and Planetary Science Letters, 2004
Abstract Atmospheric cycling of nitric acid and other nitrogen-bearing compounds is an important biogeochemical process, with significant implications for ecosystems and human health. Volcanoes are rarely considered as part of the global nitrogen cycle, but here we show that they release a previously unconsidered flux of HNO3 vapour to the atmosphere.
Mather, T. A., Allen, A. G., Davison, Brian, Pyle, D. M., Oppenheimer, C., McGonigle, A. J. S.   +5 more
openaire   +2 more sources

A Comparison of Conventional and Microwave Decalcification and Processing of Tooth and Mandibular Bone Specimens [PDF]

Journal of Clinical and Diagnostic Research, 2016
Introduction: Any laboratory procedure exposes the technician and the pathologists to the hazardous effects of chemicals. Conventional procedures like decalcification and histoprocessing employed in laboratories are labour intense and time consuming ...
A. Thirumal Raj, Shankargouda Patil, Roopa S Rao   +2 more
doaj   +1 more source