Results 111 to 120 of about 4,789,569 (302)

Determination of ultra-trace rare earth elements in ultramafic and sulfide samples by quadrupole inductively coupled plasma-mass spectrometry

, 2009
A method has been developed for the determination of rare earth elements (REE) in ultramafic and sulfide samples by quadrupole inductively coupled plasma-mass spectrometry (ICP-MS).
Sun Min, Sun Yali, Sun, M, Sun, Y
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Engineering Metal‐Pocket Cooperativity in Single‐Atom COF Nanozymes for Selective Cascade Catalysis

Advanced Materials, EarlyView.
A multilevel programming strategy is developed to engineer single‐atom COF nanozymes with tunable metal centers and chiral pockets inspired by heme–pocket cooperativity. This approach enables controlled metal–pocket interplay for asymmetric cascade catalysis, delivering high activity, selectivity, and recyclability in an asymmetric oxidation–aldol ...
Ziping Li, Qijun Sun, Yawen Hao, Haotian Wen, Shery Chang, Fengwang Li, Jiangtao Xu, Kang Liang   +7 more
wiley   +1 more source

Hierarchical Flexible Ceramic Nanofiber Membrane for Simultaneous Membrane Distillation and Photocatalytic Hydrogen Evolution

Advanced Materials, EarlyView.
A hierarchical flexible ceramic nanofiber membrane integrates a La‐stabilized ZrO2 scaffold with superhydrophobic UiO‐66‐NH2/CdS heterojunctions. The gas–liquid–solid interfacial architecture sustains vapor‐selective desalination, visible‐light charge separation, and rapid H2 extraction, enabling simultaneous freshwater production and photocatalytic ...
Pengfei Lin, Xiaochen Lu, Jiawei Sun, Shuai Guo, Xinping He, Chunhai Yi, Zhenyao Wang, Jiaxin Guo, Swee Ching Tan, Alicia Kyoungjin An   +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

Online preconcentration ICP-MS analysis of rare earth elements in seawater [PDF]

, 2012
The rare earth elements (REEs) with their systematically varying properties are powerful tracers of continental inputs, particle scavenging intensity and the oxidation state of seawater.
Stichel, Torben, Haley, Brian, Zieringer, Moritz, Hathorne, Ed C., Grasse, Patricia, Frank, Martin   +5 more
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Decoding Synergistic Pathways in Bimetallic MOFs for Advanced Oxidation Processes

Advanced Materials, EarlyView.
This review presents a unified framework linking metal pairing and framework design with electronic structure, redox cycling, oxidant activation, reactive‐species generation, and catalytic performance across photocatalytic and oxidant‐based BMOF‐AOPs. The resulting design principles guide the development of hydrolytically stable and efficient BMOFs for
Karim El‐Naggar, Huayang Zhang, Shaobin Wang   +2 more
wiley   +1 more source

Mapping diagenesis in archaeological human bones

Heritage Science, 2019
We describe a procedure for ascertaining the extent of diagenesis in archaeological human skeletons through the distribution of Sr, Ba, Cu, Pb, Fe, and Mn in cross-sections of femoral cortical bone.
Kaare Lund Rasmussen, George Milner, Lilian Skytte, Niels Lynnerup, Jørgen Lange Thomsen, Jesper Lier Boldsen   +5 more
doaj   +1 more source

Silicon isotope measurement in zircon by laser ablation multiple collector inductively coupled plasma mass spectrometry

, 2020
Co-auteur étrangerInternational audienceThis study reports the first Si isotope data measured in zircon using nanosecond laser ablation multiple collector inductively coupled plasma mass spectrometry.
Chaussidon, Marc, Marin-Carbonne, Johanna, Gannoun, Abdelmouhcine, Moynier, Frédéric, Deng, Zhengbin, Guitreau, Martin   +5 more
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Lattice Strain and Built‐In Field Synergistically Boost Urea Oxidation via Dynamic NiOOH Mediation at Multiphase Heterointerfaces

Advanced Materials, EarlyView.
A sulfur‐doped lignin‐derived carbon‐coated Ni‐NiO‐MoO2 nanorod array was synthesized, exhibiting enhanced UOR performance ‐ due to lattice‐strain and built‐in electric field effects by multiphase heterogeneous interface in Ni‐NiO‐MoO2@SC, excellent corrosion resistance, mass‐transport ability, and long‐term stability (500 mA cm−2 at 1.53 V for 500 h ...
Jiawei Li, Liancen Li, Guangfu Qian, Zishan Cai, Yiping Cao, Yihao Xu, Ruyu Zhang, Jinli Chen, Changzhou Chen, Panagiotis Tsiakaras   +9 more
wiley   +1 more source

Determinação de elementos formadores de hidretos e mercúrio em amostras ambientais e biológicas com amosttagem em suspensão por geração química de vapor acoplada à espectrometria de emissão óptica com plasma indutivamente acoplado [PDF]

, 2007
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-graduação em QuímicaO desenvolvimento de metodologia analítica para a determinação de elementos formadores de hidretos e mercúrio em ...
Santos, Éder José dos
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