Results 41 to 50 of about 5,477,527 (302)

Application of atomic spectroscopy for trace element analysis of fruit juices: A review [PDF]

BIO Web of Conferences
Trace elements are crucial for human nutrition, requiring their precise analysis in fruit juices to ensure product quality and assess contamination risks.
Hemachandra Pavithra, Bencs László, Ajtony Zsolt   +2 more
doaj   +1 more source

Determination of zinc content in insulin products by inductively coupled plasma mass spectrometry

Регуляторные исследования и экспертиза лекарственных средств, 2023
Scientific relevance. Zinc content is a quality attribute of insulin products. The State Pharmacopoeia of the Russian Federation requires that it should be determined by flame atomic absorption spectrometry (FAAS).
Yu. N. Shvetsova, A. A. Erina, E. A. Khorolskaya, E. S. Zhigilei, N. E. Kuz’mina   +4 more
doaj   +1 more source

CO2‐to‐CO Conversion in a Gas‐Fed, Zero‐Gap, PEM Electrolyzer Enabled by Polycations and Nitrogen‐Doped Carbon‐Supported Cobalt Nanoparticles

Advanced Functional Materials, EarlyView.
A gas‐fed, zero‐gap, PEM CO2 electrolyzer is realized by incorporating PDDA+ ions onto the carbonaceous Co/N‐C electrocatalyst, with gaseous H2 and CO2 fed into the anode and cathode, respectively. Operating without an aqueous electrolyte, the system sustains a peak FECO of 65.1% at 100 mA cm−2. ABSTRACT Electrochemical carbon dioxide reduction (ECO2R)
Yuen Leong Chow, Hsi‐Wen Wu, Aimin Li, Yalou Guo, Duhong Chen, Jie Zhang, Paul A. Webley   +6 more
wiley   +1 more source

Estudo comparativo de métodos de preparo de amostras de tinta para a determinação de metais e metalóides por técnicas de espectrometria atômica Paint samples preparation methods for metals and methaloids determination by atomic spectrometry techniques

Química Nova, 2009
This work deals with paint decomposition methods for major, minor and trace elements determination. Three methods were investigated: (1) decomposition in closed quartz vessel and heating in microwave oven; (2) decomposition in open vessel using HNO3 and ...
Fabrina R. S. Bentlin, Dirce Pozebon, Fernanda dos Santos Depoi   +2 more
doaj   +1 more source

Matrix-type certified reference materials for quality control of metal determination from solid environmental and vegetation samples

Romanian Journal of Ecology & Environmental Chemistry, 2020
In the context of monitoring environmental factors, metals are one of the major analytical components. Applying appropriate determination methods and obtaining accurate results is a requirement imposed on environmental laboratories that perform quality ...
Anda-Gabriela Tenea, Gabriela Geanina Vasile, Gina Alina Catrina, Mihaela Mureseanu   +3 more
doaj   +1 more source

Designing Vanadium‐Based Oxide Electrocatalysts for Water Splitting: Experimental and Mechanistic Insights with Machine Learning

Advanced Functional Materials, EarlyView.
This review establishes structure‐property‐mechanism relationships across six modification strategies for V‐based oxide water‐splitting electrocatalysts: lattice engineering, heteroatom doping, interface engineering, carbon‐based hybridization, morphology engineering, and surface reconstruction and pre‐catalyst design, where dissolution is reframed as ...
Youness El Issmaeli, Amina Lahrichi, Hoje Chun, Rafael Gómez‐Bombarelli, Bruno G. Pollet   +4 more
wiley   +1 more source

Cereal grain mineral micronutrient and soil chemistry data from GeoNutrition surveys in Ethiopia and Malawi

Scientific Data, 2022
Measurement(s) Trace Element • soil chemical properties Technology Type(s) Inductively-Coupled Plasma Mass Spectrometry Factor Type(s) Geography • Staple cereal crop Sample Characteristic - Organism Staple cereal food crops Sample Characteristic ...
D. B. Kumssa, A. W. Mossa, T. Amede, E. L. Ander, E. H. Bailey, L. Botoman, C. Chagumaira, J. G. Chimungu, K. Davis, S. Gameda, S. M. Haefele, K. Hailu, E. J. M. Joy, R. M. Lark, I. S. Ligowe, S. P. McGrath, A. Milne, P. Muleya, M. Munthali, E. Towett, M. G. Walsh, L. Wilson, S. D. Young, I. R. Haji, M. R. Broadley, D. Gashu, P. C. Nalivata   +26 more
doaj   +1 more source

Desenvolvimento de método HG-ICP OES para determinação simultânea de arsênio e selênio [PDF]

, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Química, Florianópolis, 2014No presente trabalho são descritas as etapas de desenvolvimento eimplantação de uma rotina analítica ...
Zappelini, Aline Iara
core  

Self‐Assembled Crystalline Peptoid Nanomaterials as Metal‐Free Enzyme Mimics for Enhanced Carbon Dioxide Hydration and Precipitation

Advanced Functional Materials, EarlyView.
Inspired by metal‐free carbonic anhydrases (CAs) that achieve efficient catalysis without metal cofactors, we herein report a sequence‐defined supramolecular peptoid platform that mimics metal‐free CAs and exhibits hydrolytic activity via a supramolecular assembly‐mediated proton‐transfer mechanism.
Progyateg Chakma, Ying Chen, Thi Kim Hoang Trinh, Anthony R. Perez, Jonathan Gil, Maria Casco Hidalgo, Botao Hao, Kyle Whitaker, Chun‐Long Chen   +8 more
wiley   +1 more source

Determination of strontium content in different dairy products by inductively coupled plasma mass spectrometry [PDF]

Zhongguo niangzao
An analytical method for determining the strontium content in different dairy products was established through inductively coupled plasma mass spectrometry (ICP-MS). After microwave digestion treatment of the samples, the content of strontium element was
HUANG Xiaoyan, TANG Shuo, LIU Lijun, LI Cuizhi, WU Xiaoli, NING Yuelian, YUE Hong
doaj   +1 more source