Results 71 to 80 of about 573,896 (347)

Rapid Determination of REEs, PGEs, and Other Trace Elements in Geological and Environmental Materials by High Resolution Inductively Coupled Plasma Mass Spectrometry

, 2018
Methodologies were designed and developed using magnetic sector high resolution inductively coupled plasma mass spectrometry (HR-ICP-MS) for the fast, reliable, and accurate determination of different sets of geochemically significant trace elements (at ...
M. Satyanarayanan, V. Balaram, S. Sawant, K. Subramanyam, G. V. Krishna, B. Dasaram, C. Manikyamba   +6 more
semanticscholar   +1 more source

Turning on Selective H2S Gas Sensing Activity in Ternary Nickel Tungstate Strongly Correlated Electron System Through Sub‐Gap Band Manipulation

Advanced Functional Materials, EarlyView.
A strongly correlated electron system (SCES) exhibits pronounced insulating behavior due to Coulombic repulsion between cations, which generates a charge gap. This study investigates the tuning of the band structure in NiWO4‐based SCES via Cu doping at substitutional sites and Li doping at interstitial sites.
Seung Yong Lee, Ha Eun Choa, Seung Joon Choi, Chul Oh Park, Gi Hyun Park, June Won Suh, Si Hoon Jeong, Yunseong Ji, Changhyun Jin, Jeong Yun Hwang, Inseo Kim, Jihye Park, Joonho Bang, Myung Sik Choi, Hyo‐Jick Choi, Dong Won Chun, Kimoon Lee, Wooyoung Lee, Kyu Hyoung Lee   +18 more
wiley   +1 more source

Low‐Surface‐Energy Copper Promotes Atomic Diffusion and Ordering in PtFeCu Intermetallic Compounds for Oxygen Reduction Catalysis

Advanced Functional Materials, EarlyView.
A copper‐induced atom ordering strategy is developed for the reconstruction of raw commercial Pt catalyst into ordered PtFeCu intermetallic compounds for hydrogen fuel cells. Abstract Carbon‐supported platinum intermetallic compound nanoparticles are seen as the next‐generation cathodic catalysts for hydrogen fuel cells due to their high activity and ...
Yan Nie, Shuhao Wang, Quentin Meyer, Hongyu Guo, Chen Jia, Dazhi Yao, Yingjun Sun, Jun Chen, Shaojun Guo, Chuan Zhao   +9 more
wiley   +1 more source

PROBLEMS OF IODIDE IONS DETERMINATION IN MULTIVITAMINS BY INDUCTIVELY COUPLED PLASMA ATOMIC-EMISSION SPECTROMETRY

Регуляторные исследования и экспертиза лекарственных средств, 2018
The article looks into the main problems of determination of iodine trace amounts in multivitamins by inductively coupled plasma-atomic emission spectrometry (ICP-AES), i.e. spectral overlaps attributable to macro-components, and the background effect of
V. M. Shchukin, E. Yu. Severinova, N. E. Kuz’mina, V. A. Yashkir, V. A. Merkulov   +4 more
doaj   +1 more source

Acetylene - Argon Plasmas Measured at a Biased Substrate Electrode for Diamond-Like Carbon Deposition. Part 1: Mass Spectroscopy [PDF]

arXiv, 2008
We report, for the first time, quadrupole mass spectrometry of neutral and positive ionic hydrocarbon species measured at the rf biased substrate electrode of an inductively coupled plasma for acetylene rich C2H2:Ar mixtures under various bias, frequency and pressure conditions.
arxiv  

Development of a method to measure trace level of uranium and thorium in scintillation films [PDF]

Progress of Theoretical and Experimental Physics, Volume 2024, Issue 6, June 2024, 063H01
We have established a method to measure picograms-per-gram (pg g$^{-1}$) levels of $^{238}$U and $^{232}$Th in scintillation films by combining the dry ashing method and inductively coupled plasma mass spectrometry. Trace amounts of $^{238}$U and $^{232}$Th were measured in up to 2~g of the scintillation film with almost 100% collection efficiency ...
arxiv   +1 more source

Inductively Coupled Plasma Mass Spectrometry A Review

Analytical Sciences, 1988
Inductively coupled plasma-mass spectrometry is a rapidly growing technique for multi-elemental analysis. In this review, instrumental developments, analytical performance and applications of this method achieved recently are described. Ion sampling interface, ion lens systems and various sample introduction systems are discussed.
openaire   +3 more sources

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

Enrichment of the Superheavy Element Rg in Natural Au [PDF]

, 2010
Based on the observation of the long-lived isotopes 261Rg and 265Rg (Z = 111, t(1/2) >= 10^(8) y) in natural Au, an experiment was performed to enrich Rg in 99.999% Au. 16 mg of Au were heated in vacuum for two weeks at a temperature of 1127 deg. C (63 deg. C above the melting point of Au). The content of 197Au and 261Rg in the residue was studied with
arxiv   +1 more source

Mg2+/Al3+ Co‐doped Li‐Rich Manganese‐Based Oxides for Boosting Rate Performance and Stability of Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
The co‐doping strategy can effectively address the challenges associated with LRMOs cathode materials, providing a promising pathway for the development of high energy density and resilient cathode materials in the next‐generation lithium‐ion batteries. Abstract Lithium‐rich manganese‐based oxides (LRMOs) are promising cathode materials for lithium‐ion
Junxia Meng, Wenzhuan Hu, Quanxin Ma, Zhenzhen Wu, Lishuang Xu, Jie Huang, Chen Xiao, Junru Wang, Lina Zhang, Feng Liu, Xing Zhi, Shanqing Zhang   +11 more
wiley   +1 more source