Results 11 to 20 of about 268,301 (310)
Determination of rare earth elements, uranium and thorium in soil samples by microwave-assisted acid digestion and inductively coupled plasma mass spectrometry [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2021 This paper presents a simple microwave digestion method for soil samples leading to correct determination of the rare earth elements (Ce, La, Nd, Sc), uranium (U) and thorium (Th) using inductively coupled plasma mass spectrometry (ICP-MS).
Sasikarn Nuchdang +3 more
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Electrochemical Behavior of ReO-4 in Sulfuric Acid and Nitric Acid Media
He huaxue yu fangshe huaxue, 2022 99Tc is one of the main fission products in nuclear spent fuel in power reactor. Its half-life period is 2.13×105 years, which has long-term harm to the ecological environment, and it gets special attention in PUREX process.
DENG Yi-lin, ZHANG Hu
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The utilization demineralized rice husk waste for biofuel source via pyrolysis: thermogravimetric analysis and kinetic study [PDF]
MATEC Web of Conferences, 2019 Rice husk is considered as agricultural waste that causes environmental problem during its handling. In this study, rice husk was treated with acid (citric acid and nitric acid) solutions prior used as raw material for producing biofuel and chemicals via
Wijayanti Hesti +2 more
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Mechanical Properties of Reactive Powder Concrete (RPC) Exposed to Acidic Solutions
Tikrit Journal of Engineering Sciences, 2022 This research work includes an experimental investigation to study the mechanical properties of reactive powder concrete (RPC) exposed to acidic solutions.
Ali H. Ali, Ahmed K. Ibrahim
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Optimizing of Synthesis of High Purity HMX Using Polyphosphoric Acid by Response Surface Method [PDF]
Iranian Journal of Chemical Engineering, 2023 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) is one of the most powerful explosives of which the purity may have a significant effect on increasing the performance of rocket engines. In this research, the synthesis of high purity HMX is presented
M.A. Zarei +5 more
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Periodic current oscillations of zinc in nitric acid solutions [PDF]
Journal of the Serbian Chemical Society, 2008 This paper presents current oscillations of a Zn anode in solutions of nitric acid and potassium dichromate. The effects of the nitric acid concentration were investigated.
Crisan Florin, Salló Ervin
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Journal of Engineering, 2003 An experimental investigation was conducted to study the various parameters affecting the production of oxalic acid by the action of concentrated nitric acid on carbohydrates. Two feedstocks were studied, viz., dates fruit and dates syrup.
Harith N. Al-Rawi +2 more
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Evaluation of Acid Digestion Procedures to Estimate Mineral Contents in Materials from Animal Trials [PDF]
Asian-Australasian Journal of Animal Sciences, 2015 Rigorously standardized laboratory protocols are essential for meaningful comparison of data from multiple sites. Considering that interactions of minerals with organic matrices may vary depending on the material nature, there could be peculiar demands ...
M. N. N. Palma +3 more
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The Scientific World Journal, 2014 Maghemite (γ-Fe2O3) nanoparticles have been synthesized using a chemical coprecipitation method at different nitric acid concentrations as an oxidizing agent.
Irwan Nurdin +3 more
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