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You searched for: Subject "energy-dispersive X-ray analysis" Remove constraint Subject: "energy-dispersive X-ray analysis"
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1. Fired pressed pellet as a sample preparation technique of choice for an energy dispersive X-ray fluorescence analysis of raw clays

Author:
Nevenka Mijatović; Milica Vasić; Ljiljana Miličić; Milena Radomirović; Zagorka Radojević
Source:
Talanta 2023 v.252 pp. 123844
ISSN:
0039-9140
Subject:
energy-dispersive X-ray analysis,   etc   ; X-ray fluorescence spectroscopy; calibration; chemical analysis; clay; detection limit;     Show all 6 Subjects
Abstract:
... In this paper, the main subject concerns comparing different techniques to prepare raw clay samples for energy-dispersive X-ray fluorescence spectrometry (EDXRF). Three kinds of sample preparation procedures are examined, such as loose powder, pressed pellet, and fired pressed pellet. The fired pressed pellet approach was observed as a part of universal sample preparation for physic, mechanical, a ...
DOI:
10.1016/j.talanta.2022.123844

2. Simulation of diffusion behavior of NaCl in multi-tissue beef marination process

Author:
Yu Shi; Yueying Wang; Jiyong Shi; Zhihua Li; Xiaowei Huang; Jing Liang; Xinai Zhang; Di Zhang; Xiaobo Zou; Xuetao Hu
Source:
Food chemistry 2023 v.402 pp. 134164
ISSN:
0308-8146
Subject:
energy-dispersive X-ray analysis,   etc   ; beef; electron microscopy; food chemistry; geometry; marinating; mathematical models; model validation; muscles;     Show all 9 Subjects
Abstract:
... To better understand the diffusion behavior of NaCl during beef marinating, energy dispersive spectroscopy combined with scanning electron microscopy were used to acquire NaCl content at successive sampling points in marinated muscle, adipose and connective tissue. The NaCl content at the sampling points was substituted into a mathematical model to calculate accurate diffusion coefficients. Subseq ...
DOI:
10.1016/j.foodchem.2022.134164

3. Development and testing a low-cost device for airborne PM monitoring in highly anthropized areas: The international maritime hub of Civitavecchia (Rome, Italy)

Author:
Federico Lucci; Giancarlo Della Ventura; Daniele Piazzolla; Carlo Venettacci; Andrea Terribili; Cecilia La Bella; Alessandra Conte; Simone Bonamano; Sergio Scanu; Francesco Radica; Marco Marcelli
Source:
Geosystems and geoenvironment 2023 v.2 no.1 pp. 100120
ISSN:
2772-8838
Subject:
energy-dispersive X-ray analysis,   etc   ; COVID-19 infection; air pollution; carbon; environmental protection; evolution; fabrics; humans; humidity; light microscopy; microplastics; particulates; Italy; Mediterranean Sea;     Show all 14 Subjects
Abstract:
... In this paper we describe our work aimed at designing a system able to measure the particulate matter (PM) concentrations via an optical particle counter (OPC) and simultaneously collect it via standard 2.5 cm filters for laboratory characterization. The Port of Civitavecchia (Italy), one of the most important maritime hubs of the Mediterranean Sea, was selected as a test site for an eight-months ...
DOI:
10.1016/j.geogeo.2022.100120

4. Fabrication of self-antibacterial chitosan/oxidized starch polyelectrolyte complex sponges for controlled delivery of curcumin

Author:
Ecaterina Stela Dragan; Claudiu Augustin Ghiorghita; Maria Valentina Dinu; Ioana A. Duceac; Sergiu Coseri
Source:
Food hydrocolloids 2023 v.135 pp. 108147
ISSN:
0268-005X
Subject:
energy-dispersive X-ray analysis,   etc   ; Fourier transform infrared spectroscopy; adsorption; anions; aqueous solutions; chitosan; curcumin; electron microscopy; electrostatic interactions; freeze drying; hydrocolloids; oxidation; pH; potato starch; rice starch; starch;     Show all 16 Subjects
Abstract:
... Herein, we present novel porous polyelectrolyte complexes (PECs) physically stabilized by electrostatic interaction between chitosan (CS) and oxidized starch of two sources, i.e. potato starch (OxPS), and rice starch (OxRS). Two strategies were employed for the preparation of PECs sponges: (i) freeze-thawing of CS aqueous solution followed by freeze-drying and adsorption of the polyanion solution, ...
DOI:
10.1016/j.foodhyd.2022.108147

5. Simultaneous determination of Pb2+ and Hg2+ at food specimens by a Melamine-based covalent organic framework modified glassy carbon electrode

Author:
Mohammad Reza Jalali Sarvestani; Tayyebeh Madrakian; Abbas Afkhami
Source:
Food chemistry 2023 v.402 pp. 134246
ISSN:
0308-8146
Subject:
energy-dispersive X-ray analysis,   etc   ; Fourier transform infrared spectroscopy; density functional theory; detection limit; dielectric spectroscopy; electric potential difference; electrolytes; electron microscopy; food chemistry; glassy carbon electrode; pH; schiff bases; sensors (equipment); voltammetry;     Show all 14 Subjects
Abstract:
... Heavy metals determination is of great importance. In this respect, a recently synthesized melamine-based covalent organic framework (Schiff base network₁ (SNW₁)) was used in this research as a novel modifier to alter a glassy carbon electrode for the simultaneous anodic stripping square wave voltammetric measurement of Pb²⁺ and Hg²⁺ ions. At first, the complexation of SNW₁ with Pb²⁺ and Hg²⁺ ions ...
DOI:
10.1016/j.foodchem.2022.134246

6. Casein phosphopeptide-calcium chelate: Preparation, calcium holding capacity and simulated digestion in vitro

Author:
Ying Wang; Huasong Bai; Songjun Wang; Ruixue Wang; Zhanzhong Wang
Source:
Food chemistry 2023 v.401 pp. 134218
ISSN:
0308-8146
Subject:
energy-dispersive X-ray analysis,   etc   ; Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; antioxidant activity; bioavailability; calcium; calcium phosphates; casein; digestion; electron microscopy; food chemistry; gastrointestinal system; humans; in vitro digestion; phosphopeptides; solubility;     Show all 17 Subjects
Abstract:
... In this work, CPP-Ca chelate was synthesized by chelating casein phosphopeptide (CPP) and calcium and characterized by Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM) Energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The antioxidant activity and calcium holding capacity of CPP-Ca were evaluated and its secondary structure transition was monitored ...
DOI:
10.1016/j.foodchem.2022.134218

7. Sandwich photoelectrochemical biosensing of concanavalin A based on CdS/AuNPs/NiO Z-scheme heterojunction and lectin-sugar binding

Author:
Chenglong Sun; Yuru Shen; Yu Zhang; Yun Du; Yueyi Peng; Qingji Xie
Source:
Talanta 2023 v.253 pp. 123882
ISSN:
0039-9140
Subject:
energy-dispersive X-ray analysis,   etc   ; ascorbic acid; chitosan; concanavalin A; detection limit; electric current; electrochemistry; electroplating; mannose; nickel oxide; peroxidase; photoelectrodes; quartz crystal microbalance; schiff bases; soybeans; tin dioxide; transmission electron microscopy; ultraviolet-visible spectroscopy;     Show all 18 Subjects
Abstract:
... A CdS/AuNPs/NiO Z-scheme heterojunction was prepared on a fluorine-doped tin oxide (FTO) electrode by hydrothermal synthesis of NiO on FTO, electrodeposition of AuNPs on NiO/FTO electrode and then cast-coating of CdS quantum dots. The CdS/AuNPs/NiO/FTO electrode gave a notably increased photocurrent versus NiO/FTO, CdS/FTO, AuNPs/NiO/FTO, CdS/AuNPs/FTO and CdS/NiO/FTO electrodes. The CdS/AuNPs/NiO ...
DOI:
10.1016/j.talanta.2022.123882

8. Diagnostic kit based on halloysite nanoclay-ionic liquid nanocomposite modified electrode for electrochemical determination of cancer biomarker

Author:
Esma Yildiz; Beste Yurdacan; Yasemin Erac; Arzum Erdem
Source:
Talanta 2023 v.252 pp. 123854
ISSN:
0039-9140
Subject:
energy-dispersive X-ray analysis,   etc   ; DNA probes; RNA; analytical kits; biomarkers; breast neoplasms; carbon electrodes; cell lines; detection limit; dielectric spectroscopy; electrochemistry; halloysite; humans; hybridization; inosine; kidneys; liquids; nanocomposites; neoplasm cells; nucleic acid hybridization; nucleotide sequences; voltammetry;     Show all 22 Subjects
Abstract:
... Nucleic acid hybridization is occurred between the selective single-stranded nucleic acid sequence and its target sequence, which is one of the essential procedure for electrochemical detection of nucleic acid. microRNA-21 (miRNA-21) is known as a biomarker in various cancers. The determination of miRNA-21 was attained through by hybridization of inosine substituted miRNA-21 specific DNA probe (Pᵢ ...
DOI:
10.1016/j.talanta.2022.123854

9. Orange G degradation by heterogeneous peroxymonosulfate activation based on magnetic MnFe2O4/α-MnO2 hybrid

Author:
Le Thi Thao; To Van Nguyen; Van Quy Nguyen; Ngoc Man Phan; Ki Jae Kim; Nguyen Nhat Huy; Nguyen Trung Dung
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 379-396
ISSN:
1001-0742
Subject:
energy-dispersive X-ray analysis,   etc   ; Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; azo dyes; catalysts; electron paramagnetic resonance spectroscopy; hot water treatment; hybrids; magnetism; mass spectrometry; pH; pollution; reaction mechanisms; temperature; thermogravimetry; wastewater; China;     Show all 18 Subjects
Abstract:
... Wastewater containing an azo dye Orange G (OG) causes massive environmental pollution, thus it is critical to develop a highly effective, environmental-friendly, and reusable catalyst in peroxymonosulfate (PMS) activation for OG degradation. In this work, we successfully applied a magnetic MnFe₂O₄/α-MnO₂ hybrid fabricated by a simple hydrothermal method for OG removal in water. The characteristics ...
DOI:
10.1016/j.jes.2021.10.008

10. Ni/Ni(OH)2-rGO nanocomposites sensor for the detection of long forgotten mycotoxin, xanthomegnin

Author:
P.D. Priya Swetha; A. Nikitha; M Manjunath Shenoy; Yoon-Bo Shim; K. Sudhakara Prasad
Source:
Talanta 2023 v.253 pp. 123953
ISSN:
0039-9140
Subject:
energy-dispersive X-ray analysis,   etc   ; Aspergillus; Penicillium; Trichophyton rubrum; X-ray photoelectron spectroscopy; death; detection limit; electrochemistry; electron microscopy; glassy carbon electrode; graphene oxide; immunosuppression; keratinophilic fungi; livestock; mutagenicity; mycoses; mycotoxins; nanocomposites; nanoparticles; nickel; secondary metabolites; ultraviolet-visible spectroscopy; virulence;     Show all 23 Subjects
Abstract:
... Xanthomegnin, a known fungal toxin, secondary metabolite, and pigment diffuses from the dermatophytes has gained attention as local virulence factor because of the mutagenicity, toxicity, cytocidal, and immunosuppressive properties. Not only as a dermatophyte in skin related disorders, the production of xanthomegnin is implicated as a powerful diagnostic marker in patients suffering from ocular my ...
DOI:
10.1016/j.talanta.2022.123953

11. Graph-based deep learning segmentation of EDS spectral images for automated mineral phase analysis

Author:
Roman Juránek; Jakub Výravský; Martin Kolář; David Motl; Pavel Zemčík
Source:
Computers & geosciences 2022 v.165 pp. 105109
ISSN:
0098-3004
Subject:
energy-dispersive X-ray analysis,   etc   ; automation; mineralogy;     Show all 3 Subjects
Abstract:
... We introduce a novel method for graph-based segmentation of spectral images obtained using a Scanning Electron Microscope (SEM) equipped with an Energy Dispersive X-ray spectroscopy (EDS) detector. The method exploits deep learning along with fusion of rasterized electron microscopy images with sparse EDS samples to obtain accurate mineralogy segmentation with high efficiency. Improvements over pr ...
DOI:
10.1016/j.cageo.2022.105109

12. Optimizing Energy Dispersive X-Ray Spectroscopy (EDS) Image Fusion to Scanning Electron Microscopy (SEM) Images

Author:
Zina-Sabrina Duma; Tuomas Sihvonen; Jouni Havukainen; Ville Reinikainen; Satu-Pia Reinikainen
Source:
Micron 2022 pp. 103361
ISSN:
0968-4328
Subject:
energy-dispersive X-ray analysis,   etc   ; electron microscopy; wavelet;     Show all 3 Subjects
Abstract:
... Fusion and quality enhancement of the low-resolution Energy Dispersive X-ray Spectroscopy (EDS) maps to Scanning Electron Microscopy (SEM) panchromatic images has been proven effective by various pansharpening algorithms. The present paper aims to target the preprocessing of these maps to enhance the efficiency of the pansharpening process, with as little information loss on the chemical distribut ...
DOI:
10.1016/j.micron.2022.103361

13. The good, the bad and the ugly polishing: Effect of abrasive size on standardless EDS analysis of Portland cement clinker’s calcium silicates

Author:
Vincent Thiery; Emmanuel Dubois; Séverine Bellayer
Source:
Micron 2022 v.158 pp. 103266
ISSN:
0968-4328
Subject:
energy-dispersive X-ray analysis,   etc   ; aluminum oxide; calcium; cement; chemistry; silica;     Show all 6 Subjects
Abstract:
... Standardless Energy dispersive spectroscopy (EDS) on polished samples of Portland cement clinker is routinely performed both for unhydrated phases as well as in cement pastes. Typically, the calcium to silica ratio is investigated. EDS analyses are highly dependent on the polishing quality of the sample. It is thus worth studying the Ca/Si ratios of cement phases in a clinker since they can be use ...
DOI:
10.1016/j.micron.2022.103266

14. Accurate quantification of phosphorus intergranular segregation in iron by STEM-EDX

Author:
C.-Y. Hsu; J. Stodolna; P. Todeschini; F. Delabrouille; B. Radiguet; F. Christien
Source:
Micron 2022 v.153 pp. 103175
ISSN:
0968-4328
Subject:
energy-dispersive X-ray analysis,   etc   ; alloys; iron; phosphorus; tomography; transmission electron microscopes;     Show all 6 Subjects
Abstract:
... This study describes a method to quantify phosphorus grain boundary segregation by Energy Dispersive X-ray Spectroscopy in Scanning Transmission Electron Microscope (STEM-EDX). A “box-type method” is employed, removing the long-discussed problems of interaction volume and the beam broadening effect. The proposed methodology also introduces a novel way of subtracting the spectrum background to remo ...
DOI:
10.1016/j.micron.2021.103175

15. Anthropogenic influences on sedimentary geochemistry of Itapessoca Estuarine Complex, Pernambuco, Brazil

Author:
Paulo T. F. Albuquerque; Thierry Fredou; Roberto L. Barcellos; Julyanne T. B. Melo; Gilberto N. Arruda; Elvis J. De França
Source:
Environmental monitoring and assessment 2022 v.194 no.1 pp. 43
ISSN:
0167-6369
Subject:
energy-dispersive X-ray analysis,   etc   ; anthropogenic activities; estuaries; geochemistry; geochronology; radiometry; sediments; Brazil;     Show all 8 Subjects
Abstract:
... The Itapessoca Estuarine Complex is characterized by a history of intense economic activities developed on the banks of its tributary rivers, often exercised without any control or planning. In order to relate natural and/or anthropic events to the sediment age, radiometric dating method was performed by determining excess ²¹⁰Pb in the sediment using the proportional gas flow technique. To investi ...
DOI:
10.1007/s10661-021-09699-3

16. Linking the physical and chemical characteristics of single small microplastics or nanoplastics via photolithographic silicon substrates

Author:
Lei Su; Fangni Du; Chengjun Sun; Huahong Shi
Source:
Analytical methods 2022 v.14 no.15 pp. 1547-1552
ISSN:
1759-9679
Subject:
energy-dispersive X-ray analysis,   etc   ; atomic force microscopy; computers; human health; nanoplastics; silicon;     Show all 6 Subjects
Abstract:
... Small microplastics and nanoplastics are of growing concern as they pose more risks to ecological and human health than larger particles. However, characterization of the morphological and chemical features of single particles faces a major challenge if instrumental combination is not available. Here, we developed a marker system via computer aided design and crafted it on a silicon substrate (8 × ...
DOI:
10.1039/d2ay00089j

17. Microplastics captured by snowfall: A study in Northern Iran

Author:
Sajjad Abbasi; Mustafa Alirezazadeh; Nastaran Razeghi; Mahrooz Rezaei; Hanie Pourmahmood; Reza Dehbandi; Meisam Rastegari Mehr; Shirin Yavar Ashayeri; Patryk Oleszczuk; Andrew Turner
Source:
Science of the total environment 2022 v.822 pp. 153451
ISSN:
0048-9697
Subject:
energy-dispersive X-ray analysis,   etc   ; environment; microplastics; nylon; particulates; rain; rubber; snow; Iran;     Show all 9 Subjects
Abstract:
... Samples of fresh snow (n = 34) have been collected from 29 locations in various urban and remote regions of northern Iran following a period of sustained snowfall and the thawed contents examined for microplastics (MPs) according to established techniques. MP concentrations ranged from undetected to 86 MP L⁻¹ (mean and median concentrations ~20 MP and 12 MP L⁻¹, respectively) and there was no sign ...
DOI:
10.1016/j.scitotenv.2022.153451

18. Preferential adsorption of L-tryptophan by L-phospholipid coated porous polymer particles

Author:
Hayato Takase; Keishi Suga; Hideki Matsune; Hiroshi Umakoshi; Koichiro Shiomori
Source:
Colloids and surfaces 2022 v.216 pp. 112535
ISSN:
0927-7765
Subject:
energy-dispersive X-ray analysis,   etc   ; adsorption; enantiomers; fluorescent dyes; phospholipids; polymerization; polymers; tryptophan;     Show all 8 Subjects
Abstract:
... Chiral selective adsorption of L-amino acid, tryptophan (Trp) was achieved using phospholipid membrane-coated porous polymer particles (PPPs). PPPs with numerous pores were prepared by in situ polymerization of divinylbenzene, and then coated with 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC, L-phospholipid) via the impregnation method. Elemental mapping of energy dispersive X-ray (EDX) analy ...
DOI:
10.1016/j.colsurfb.2022.112535

19. Industrially Compatible Fabrication Process of Perovskite-Based Mini-Modules Coupling Sequential Slot-Die Coating and Chemical Bath Deposition

Author:
Iwan Zimmermann; Marion Provost; Salim Mejaouri; Marc Al Atem; Alexandre Blaizot; Aurélien Duchatelet; Stéphane Collin; Jean Rousset
Source:
ACS applied materials & interfaces 2022 v.14 no.9 pp. 11636-11644
ISSN:
1944-8252
Subject:
energy-dispersive X-ray analysis,   etc   ; elemental composition; symbiosis; tin dioxide; transmission electron microscopy;     Show all 5 Subjects
Abstract:
... To upscale the emerging perovskite photovoltaic technology to larger-size modules, industrially relevant deposition techniques need to be developed. In this work, the deposition of tin oxide used as an electron extraction layer is established using chemical bath deposition (CBD), a low-cost and solution-based fabrication process. Applying this simple low-temperature deposition method, highly homog ...
DOI:
10.1021/acsami.1c24558

20. Investigation into Mechanical, Thermal and Water Absorption Behaviors of Cocos nucifera Shell Filler Reinforced Vinyl Ester Polymeric Composites

Author:
J. David Gnanaraj; S. Mothilal; V. Vignesh; T. Karthick; Sikiru O. Ismail; N. Rajini; B. Raja Mohamed Rabi; Suchart Siengchin; Faruq Mohammad
Source:
Journal of polymers and the environment 2022 v.30 no.5 pp. 2142-2154
ISSN:
1566-2543
Subject:
energy-dispersive X-ray analysis,   etc   ; automobiles; electronics; environment; hardness; heat; temperature; water uptake;     Show all 8 Subjects
Abstract:
... Recently, natural filler reinforced polymer composites are important materials for various engineering applications. Hence, this present work focuses on utilization of Cocos nucifera shell powder (CNSP) as a filler in vinyl ester (VE) resin to produce particulate composite specimens. The particulate composite plates with various weights or filler contents from 5 to 30 wt% were fabricated, using co ...
DOI:
10.1007/s10924-021-02343-8