Results 61 to 70 of about 36,252 (237)

Recent Advances (2023–2025) of Capillary Electrophoresis‐Mass Spectrometry (CE‐MS) for Top‐Down Proteomics

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT Top‐down proteomics (TDP) characterizes proteoforms in cells, tissues, and biofluids, in discovery mode and on a global scale, requiring analytical tools with high peak capacity for proteoform separation and high sensitivity for proteoform detection, given the extremely high proteoform complexity and wide proteoform concentration dynamic range.
Guijie Zhu   +5 more
wiley   +1 more source

Polímeros impressos com íons: fundamentos, estratégias de preparo e aplicações em química analítica

open access: yesQuímica Nova, 2013
Chemical imprinting technology has been widely used as a valuable tool in selective recognition of a given target analyte (molecule or metal ion), yielding a notable advance in the development of new analytical protocols.
Luiz Diego Marestoni   +4 more
doaj   +1 more source

Simultaneous determination of traces of PT, PD, OS, IR, RH, AG and AU by using magnetic nanoparticles solid phase extraction coupled with ICP OES [PDF]

open access: yes, 2017
The direct analysis of these target analytes is very limited being essential sample pre-treatment techniques and the use of very sensitive instrumental techniques to carry out determinations.
Cano-Pavón, José Manuel   +3 more
core  

Laser‐Assisted In Situ Fabrication of rGO/Bi2O3 Nanocomposites for Heavy Metal Sensing

open access: yesSmall, EarlyView.
Rapid CO2 laser irradiation drives the in situ formation of Bi2O3 nanoplatelets within reduced graphene oxide, yielding flexible, reproducible electrodes with excellent stripping voltammetric performance toward trace heavy metals. ABSTRACT In this work, we introduce a laser‐assisted approach to synthesize reduced graphene oxide/bismuth oxide (III) (rGO/
Andy Bruno   +6 more
wiley   +1 more source

ADVANCING THE SEPARATION SCIENCES THROUGH THE DELIVERY OF NEW MATERIALS, TECHNOLOGY AND METHODOLOGY. [PDF]

open access: yes, 2013
A thesis and collection of works submitted to Plymouth University in partial fulfilment for the degree of DOCTOR OF ...
Paull, Brett
core   +2 more sources

SERS‐Based Nano‐ and Microsystems Toward Biomedical Applications

open access: yesSmall, EarlyView.
This review provides a current overview of nano‐ and microscale SERS‐based devices, encompassing all aspects from material design to practical applications. We highlight controlled SERS‐active architectures, including patterned substrates, nanorods, microspheres, micromotors, and microneedles, as well as combinations of these microfluidic systems.
Gohar Soufi   +14 more
wiley   +1 more source

Sorption Preconcentration and Analytical Determination of Cu, Zr and Hf in Waste Samarium–Cobalt Magnet Samples

open access: yesMolecules, 2022
We developed a method of sorption determination via the atomic emission of Cu, Zr and Hf metals in the waste of samarium–cobalt magnets. This method was based on the preconcentration of impurities using S- and N-containing heterochain sorbents, with ...
Alexandra Alexandrovna Arkhipenko   +2 more
doaj   +1 more source

Quantum Cascade Laser Enabled Nano-liter Polymer Waveguide Sensor [PDF]

open access: yes, 2012
To improve the Mid-Infrared (IR) chemical sensing capabilities in liquids and gases, a polymer based waveguide that has 100% interaction with Quantum Cascade (QC) laser field is proposed and demonstrated.
Deev, Andrei, Wu, Sheng
core   +1 more source

Preconcentration Modeling for the Optimization of a Micro Gas Preconcentrator Applied to Environmental Monitoring.

open access: yesProcedia Chemistry, 2009
AbstractThis paper presents the complete modeling of the preconcentration cycle for the optimization of a Micro Gas Preconcentrator applied to atmospheric pollution monitoring. The particularity of this modeling is based on the fact that it includes all equations governing not only the adsorption and desorption phenomena but also the detection phase ...
Camara, El Hadji Malick   +2 more
openaire   +2 more sources

Preparation of modified nanocomposite SBA-15 for extraction, preconcentration and determination of trace amounts of Ponceau 4R food dye in food and water samples [PDF]

open access: yesشیمی کاربردی روز, 2016
Food colors a group of natural or synthetic additives that are being prepared. Colors usually used for beautiful, the shape and cover defects in food products. Food colors can cause illness like asthma, immunosuppression or even have carcinogenic effects.
علی میرابی   +1 more
doaj   +1 more source

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