Articles with "chemical analysis" as a keyword



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A Quantum‐chemical Analysis on the Lewis Acidity of Diarylhalonium Ions

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Published in 2022 at "Chemphyschem"

DOI: 10.1002/cphc.202200634

Abstract: Abstract Cyclic diaryliodonium compounds like iodolium derivatives have increasingly found use as noncovalent Lewis acids in the last years. They are more stable toward nucleophilic substitution than acyclic systems and are markedly more Lewis acidic.… read more here.

Keywords: lewis acidity; analysis lewis; chemical analysis; acidity diarylhalonium ... See more keywords
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Chemical analysis and identification the fluorophores of photoluminescent carbon dots beyond infrared and X-ray photoelectron energy spectra

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Published in 2021 at "Dyes and Pigments"

DOI: 10.1016/j.dyepig.2021.109750

Abstract: Abstract Carbon dots or Carbon quantum dots (herein after abbreviated as CDs) with bight luminescence, derived from carbohydrates such as citric acid, glucose or sucrose, have been widely reported in recent publications. However, as to… read more here.

Keywords: identification fluorophores; carbon dots; chemical analysis; analysis identification ... See more keywords
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The application of on‐line two‐dimensional liquid chromatography (2DLC) in the chemical analysis of herbal medicines

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Published in 2018 at "Journal of Pharmaceutical and Biomedical Analysis"

DOI: 10.1016/j.jpba.2018.08.014

Abstract: HIGHLIGHTSClassification and general configuration of on‐line 2DLC are introduced.Applications of LC‐LC and LC × LC on chemical analysis of herbs are summarized.Future advance in on‐line 2DLC applied to chemical analysis of herbs is predicted. ABSTRACT… read more here.

Keywords: line; analysis; herbal medicines; line 2dlc ... See more keywords
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Online pressurized liquid extraction enables directly chemical analysis of herbal medicines: A mini review.

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Published in 2021 at "Journal of pharmaceutical and biomedical analysis"

DOI: 10.1016/j.jpba.2021.114332

Abstract: Extraction is responsible for transferring components from solid materials into solvent. Tedious extraction procedures are usually involved in liquid chromatography-based chemical analysis of herbal medicines (HMs), resulting in extensive consumptions of organic solvents, time, energy,… read more here.

Keywords: extraction; analysis; directly chemical; liquid extraction ... See more keywords
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A simple platform with moving drops for downscaling chemical analysis incorporating smartphone detection.

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Published in 2019 at "Talanta"

DOI: 10.1016/j.talanta.2019.04.014

Abstract: A simple cost-effective device for downscaling chemical analysis with microliter-scale dropwise handing and smartphone detection is proposed. The platform was made from easily available materials. Drops of constant volume of analyte and reagent were placed… read more here.

Keywords: chemical analysis; smartphone detection; platform; downscaling chemical ... See more keywords
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A workflow for spatio-seasonal hydro-chemical analysis using multivariate statistical techniques.

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Published in 2020 at "Water research"

DOI: 10.1016/j.watres.2020.116550

Abstract: Multivariate statistical techniques are powerful in data interpretation and pattern recognition, which play a vital role in pollutant source identification for water environment management. Despite of their wide application in hydro-chemical analysis, absence of a… read more here.

Keywords: analysis; hydro chemical; chemical analysis; multivariate statistical ... See more keywords
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Nanostructure in the trabecular bone of postmenopausal women: Mechanical and chemical analysis.

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Published in 2017 at "Injury"

DOI: 10.1016/s0020-1383(17)30791-x

Abstract: The possibility of diagnosis and prediction of multiple disorders in trabecular bone through nano-biomechanics and chemical analysis are summarized. Improvements to the understating of the compositional contributors of bone mineral and organic components to mechanical… read more here.

Keywords: bone postmenopausal; bone; chemical analysis; trabecular bone ... See more keywords
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Chemical Analysis of Microplastics and Nanoplastics: Challenges, Advanced Methods, and Perspectives.

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Published in 2021 at "Chemical reviews"

DOI: 10.1021/acs.chemrev.1c00178

Abstract: Microplastics and nanoplastics have become emerging particulate anthropogenic pollutants and rapidly turned into a field of growing scientific and public interest. These tiny plastic particles are found in the environment all around the globe as… read more here.

Keywords: analysis; microplastics nanoplastics; nanoplastics challenges; chemical analysis ... See more keywords
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Confined DART-MS for Rapid Chemical Analysis of Electronic Cigarette Aerosols and Spiked Drugs.

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Published in 2021 at "Journal of the American Society for Mass Spectrometry"

DOI: 10.1021/jasms.1c00103

Abstract: A confined direct analysis in a real time mass spectrometry (DART-MS) system and method were developed for coupling directly with commercial electronic cigarettes for rapid analysis without sample preparation. The system consisted of a confining… read more here.

Keywords: electronic cigarette; analysis; rapid chemical; cigarette aerosols ... See more keywords
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Plasmonic nanoparticles in chemical analysis

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Published in 2017 at "RSC Advances"

DOI: 10.1039/c7ra01034f

Abstract: Many very sensitive analytical methods utilising specific properties of plasmonic metal nanoparticles have been developed. Some of these techniques are so sensitive that observation of the reliable signal even from a single molecule of the… read more here.

Keywords: analysis; metal; plasmonic nanoparticles; chemical analysis ... See more keywords

Chemical Analysis by LC-MS of Cannabis sativa Root Samples from Northeast Brazil and Evaluation of Antitussive and Expectorant Activities.

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Published in 2021 at "Planta medica"

DOI: 10.1055/a-1628-2299

Abstract: Cannabis sativa is a millenary medicinal plant. However, contrary to worldwide paradigm-shifting, countries like Brazil still prohibit C. sativa cultivation and its medicinal use, even though many populations use aerial parts and roots of this… read more here.

Keywords: sativa roots; antitussive expectorant; cannabis sativa; analysis cannabis ... See more keywords