Krzysztof Gręda

ORCID: 0000-0001-8903-6023
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Research Areas
  • Analytical chemistry methods development
  • Plasma Applications and Diagnostics
  • Mass Spectrometry Techniques and Applications
  • Electrochemical Analysis and Applications
  • Analytical Chemistry and Sensors
  • Insect and Pesticide Research
  • Bee Products Chemical Analysis
  • Electrohydrodynamics and Fluid Dynamics
  • Heavy Metals in Plants
  • Plasma Diagnostics and Applications
  • Gas Sensing Nanomaterials and Sensors
  • Mercury impact and mitigation studies
  • Heavy metals in environment
  • Plant and animal studies
  • Water Treatment and Disinfection
  • Yersinia bacterium, plague, ectoparasites research
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Advanced Chemical Sensor Technologies
  • Ethnobotanical and Medicinal Plants Studies
  • Pesticide Residue Analysis and Safety
  • Water Quality Monitoring and Analysis
  • Ionic liquids properties and applications
  • Catalytic Processes in Materials Science
  • Aerosol Filtration and Electrostatic Precipitation
  • Spectroscopy and Chemometric Analyses

Wrocław University of Science and Technology
2016-2025

AGH University of Krakow
2017-2025

Faculty (United Kingdom)
2014-2020

A novel atmospheric pressure glow discharge generated in contact with a flowing liquid anode (FLA-APGD) was developed as the efficient excitation source for optical emission spectrometry (OES) detection. Differences appearance and electrical characteristic of FLA-APGD conventional system operated cathode (FLC-APGD) were studied detail discussed. Under optimal operating conditions FLA-APGD, from analytes (Ag, Cd, Hg, Pb, Tl, Zn) 20 to 120 times higher compared FLC-APGD. Limits detections...

10.1021/acs.analchem.6b02250 article EN Analytical Chemistry 2016-08-01

Miniaturized atmospheric pressure glow discharges (APGDs) were generated in contact with small sized flowing liquid cathode systems. As anodes a solid pin electrode or miniature flow Ar microjet applied. Both discharge systems operated the open to air atmosphere. Hydrogen peroxide (H2O2) as well ammonium (NH4 +), nitrate (NO3 −), and nitrite (NO2 −) ions quantified solutions treated by studied Additionally, an increase acidification of these was noted each case. Emission spectra near zone...

10.1007/s11090-013-9503-3 article EN cc-by Plasma Chemistry and Plasma Processing 2013-11-08

A novel liquid drop anode (LDA) direct current atmospheric pressure glow discharge (dc-APGD) system was applied for determination of Cd in microsamples (50 μL) by optical emission spectrometry (OES). The microdischarge generated open-to-air atmosphere between a solid pin type tungsten cathode and placed on graphite disk anode. arrangement the PTFE chip platform as well simple robust. limit detection (LOD) developed LDA-APGD-OES method 0.20-0.40 μg L-1, while precision (as relative standard...

10.1021/acs.analchem.7b01198 article EN Analytical Chemistry 2017-05-06

This study presented a straightforward method for detecting the adulteration of natural bee honey with consumable artificial and syrups. The approach, based on measuring alkali alkaline earth metal content, revealed that adulterated samples had lower K, Rb, Mg, Ca levels elevated Na content. A novel cost-effective method, solution cathode glow discharge optical emission spectrometry (SCGD OES), was developed elemental analysis. method's trueness confirmed through ICP OES MS measurements....

10.1016/j.foodchem.2025.143862 article EN cc-by Food Chemistry 2025-03-01

Miniaturized atmospheric pressure glow discharge with a flowing liquid cathode was used for the elemental analysis (Ca, Cu, Fe, K, Li, Mg, Mn, Na, Rb and Zn) of honeys by OES. A simplified sample preparation procedure proposed samples were only dissolved in water acidified HCl.

10.1039/c4ja00261j article EN Journal of Analytical Atomic Spectrometry 2014-09-17

Novel atmospheric pressure glow discharge (APGD) plasma systems, sustained between a miniaturized flowing liquid anode (FLA) or cathode (FLC) and He nozzle jet, were investigated for the determination of Bi by optical emission spectrometry (OES).

10.1039/d0ja00401d article EN Journal of Analytical Atomic Spectrometry 2020-11-23

A direct current atmospheric pressure glow discharge generated in contact with a flowing liquid cathode was used to study the effect of concentration two non-ionic surfactants, i.e., Triton x-45 and x-405 added electrolyte solutions, on emission characteristic excitation source by using optical spectrometry. The intensity different molecular atomic species as well background level were measured. Selected spectroscopic parameters, rotational temperatures OH N2 molecules, Co H atoms, electron...

10.1039/c2ja30275f article EN Journal of Analytical Atomic Spectrometry 2012-01-01

Gold nanoparticles (Au NPs) were prepared by direct current atmospheric pressure glow microdischarge (dc-μAPGD) generated between a miniature argon flow microjet and flowing liquid cathode. The applied discharge system was operated in continuous mode. influence of various stabilizers added to the solution cathode, i.e., gelatin (GEL), polyvinylpyrrolidone (PVP), or polyvinyl alcohol (PVA), as well concentration Au precursor (chloroauric acid, HAuCl4) on production growth NPs investigated....

10.1007/s11051-015-2992-7 article EN cc-by Journal of Nanoparticle Research 2015-04-01

A technique of vapor generation assisted by a microplasma was used for sample introduction into inductively coupled plasma optical emission spectrometry (ICP OES). Replacing pneumatic nebulizer with novel device improved the sensitivities analytical signals Ag, Bi, Cd, Pb, Tl, and Zn (by 2–13 times), as well concomitant reduction in their detection limits (DLs). Moreover, an outstanding improvement (30-fold) achieved Hg. The factors contributing to boosted signal intensities were higher...

10.1016/j.talanta.2022.123694 article EN cc-by Talanta 2022-06-17

Low power direct current atmospheric glow microdischarges were sustained between miniature Ar or He flow nozzle microjets and a small-sized flowing liquid cathode as new excitation microsources for optical emission spectrometry. The morphology of spectra both was compared the effect rate gases on their performance characteristic related to molecular bands atomic lines selected metals (Ca, Cd, Cu, Fe, K, Li, Mg, Mn, Na Zn) studied using It established that in microdischarge with microjet...

10.1039/c3ja50062d article EN Journal of Analytical Atomic Spectrometry 2013-01-01

A direct current atmospheric pressure glow discharge operated between a pin-type solid metallic electrode and the surface of flowing solution, positively or negatively charged serving as liquid anode cathode, was used for synthesizing gold nanoparticles.

10.1039/c6ra17706a article EN cc-by RSC Advances 2016-01-01

Introduction of Hg vapor to μAPGD formed between a miniature He flow microjet and flowing liquid cathode resulted in significant improvement the sensitivity I 253.7 nm emission line sub-ppb DL Hg.

10.1039/c3ja50395j article EN Journal of Analytical Atomic Spectrometry 2014-01-01

The direct determination of 18 elements (B, Ba, Ca, Cd, Cs, Cu, Fe, K, Li, Mg, Mn, Na, Ni, Pb, Rb, Sr, Tl, and Zn) in 1% aqueous honey solutions (dilution factor = 100) by ICP MS was presented. presence sugar sample caused a decrease analytical signals, the appearance carbon-containing polyatomic ions, deposition carbonaceous products on sampler cone. On flip side, these effects did not destabilize ICP, while internal standard calibration (9Be, 89Y, 153Eu as standards) made it possible to...

10.1016/j.sab.2024.106978 article EN cc-by Spectrochimica Acta Part B Atomic Spectroscopy 2024-06-20
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