A5061679898- Nanoparticles: synthesis and applications
- Heavy metals in environment
- Material Properties and Applications
- Environmental Toxicology and Ecotoxicology
- Mercury impact and mitigation studies
- Mine drainage and remediation techniques
- Arsenic contamination and mitigation
- Tribology and Wear Analysis
- Geochemistry and Elemental Analysis
- Electrochemical Analysis and Applications
- Metal Extraction and Bioleaching
- Polymer Nanocomposites and Properties
- Electromagnetic wave absorption materials
- Extraction and Separation Processes
- Heavy Metal Exposure and Toxicity
- Air Quality and Health Impacts
- Polymer Science and Applications
- Mineral Processing and Grinding
- Radioactive element chemistry and processing
- Geochemistry and Geologic Mapping
- Analytical chemistry methods development
- Anesthesia and Neurotoxicity Research
- Magnetic Properties of Alloys
- Cyclopropane Reaction Mechanisms
- Chromium effects and bioremediation
Natural History Museum
2010-2022
Silesian University of Technology
2006-2017
American Museum of Natural History
2011
Museum of London
2010
Ministry of Science and Higher Education
2009
German Oceanographic Museum
2008
Imperial College London
2005-2006
Warsaw University of Technology
1988
Institute of Organic Chemistry
1988
One of the key challenges in field nanoparticle (NP) analysis is producing reliable and reproducible characterisation data for nanomaterials. This study looks at reproducibility using a relatively new, but rapidly adopted, technique, Nanoparticle Tracking Analysis (NTA) on range particle sizes materials several different media. It describes protocol development presents both results obtained from 12 laboratories, mostly based Europe, who are primarily QualityNano members. an EU FP7 funded...
The fate and effects of CuO nanoparticles (CuO NPs) were examined in endobenthic species (Scrobicularia plana, Hediste diversicolor), under environmentally realistic conditions outdoor mesocosms (exposure to Cu at 10 μg L–1 particulate or soluble salt (CuNO3) forms) for 21 days. Labile was determined water sediment by using diffusive gradient thin films. No labile being detected from NPs; the observed invertebrates exposed NPs mainly attributed toxicity nanoparticulate rather than dissolved...
Frameworks commonly used in trace metal ecotoxicology (e.g., biotic ligand model (BLM) and tissue residue approach (TRA)) are based on the established link between uptake, accumulation toxicity, but similar relationships remain unverified for metal-containing nanoparticles (NPs). The present study aimed to (i) characterize bioaccumulation dynamics of PVP-, PEG-, citrate-AgNPs, comparison dissolved Ag, Daphnia magna Lumbriculus variegatus; (ii) investigate whether parameters bioavailability...
If engineered nanomaterials are released into the environment, some likely to end up associated with food of animals due aggregation and sorption processes. However, few studies have considered dietary exposure nanomaterials. Here we show that zinc (Zn) from isotopically modified 67ZnO particles is efficiently assimilated by freshwater snails when ingested food. The 67Zn nano-sized appears as bioavailable internalized diatoms. Apparent agglomeration oxide (ZnO) did not reduce...
This work presents results on synthesis of isotopically enriched (99% (65)Cu) copper oxide nanoparticles and its application in ecotoxicological studies. (65)CuO were synthesized as spheres (7 nm) rods × 40 nm). Significant differences observed between the reactivity dissolution spherical rod shaped nanoparticles. The extreme sensitivity stable isotope tracing technique developed this study allowed determining Cu uptake at exposure concentrations equivalent to background freshwater systems...
There is a critical need to better define the relationship among particle size, surface area, and dissolution rate for nanoscale materials determine their role in environment, toxicity, technological utility. Although some previous studies concluded that nanoparticles dissolve faster than bulk analogs, contradictory evidence suggests more slowly. Furthermore, insufficient characterization of nanoparticulate samples solution chemistry past obscures between rate. Here we report amorphous...
Copper oxide nanoparticles with different shapes were used to examine the effect of shape on various physicochemical properties (reactivity, aggregation, suspension stability) and behaviour by which CuO exhibit their biological response towards alveolar type-I cells. The examined in this study include spherical-, rod- spindle-shaped platelet particles. In vitro dissolution studies (7 days) 1 mM NaNO3 matrix showed a marked difference dissolved Cu release between nanoparticles. However,...
Zinc oxide nanoparticles (ZnO NPs) are widely used in commercial products and knowledge of their environmental fate is a priority for ecological protection. Here we synthesized model ZnO NPs that were made from thus labeled with the stable isotope (68)Zn this enables highly sensitive selective detection components against high natural Zn background levels. We combine precision measurements novel bioimaging techniques to characterize parallel water-borne exposures common mudshrimp Corophium...
The environmental behavior of ZnO nanoparticles (NPs), their availability to, uptake pathways by, and biokinetics in the earthworm Lumbricus rubellus were investigated using stable isotope labeling. Zinc isotopically enriched to 99.5% 68Zn (68Zn-E) was used prepare 68ZnO NPs a dissolved phase for comparison. These materials enabled tracing environmentally relevant (below background) NP additions soil only 5 mg 68Zn-E kg–1. Uptake routes isolated by introducing earthworms with sealed unsealed...
One of the greatest challenges in manufacturing and development nanotechnologies is requirement for robust, reliable, accurate characterization data. Presented here are results an interlaboratory comparison (ILC) brought about through multiple rounds engagement with NanoSight Malvern ten pan-European research facilities. Following refinement nanoparticle tracking analysis (NTA) technique, size concentration nanoparticles liquid suspension was proven to be robust reproducible sample types...
Environmental context Predicting the environmental implications of nanotechnology is complex in part because difficulty studying nanoparticle uptake organisms at environmentally realistic exposures. Typically, high exposure concentrations are needed to detect accumulation and effects. We use labelled Ag nanoparticles determine whether bioaccumulation responses linear over likely occur environment, concentration-dependent changes agglomeration dissolution affect bioavailability. Abstract A...
A study into the effects of amorphous nano-SiO2 particles on A549 lung epithelial cells was undertaken using proteomics to understand interactions that occur and biological consequences exposure nanoparticles. Suitable conditions for treatment, where remained viable period, were established by following changes in cell morphology, flow cytometry, MTT reduction. Label-free used estimate relative level proteins from their component tryptic peptides detected mass spectrometry. It found...
Zinc oxide nanoparticles (ZnO NPs) are among the most commercialized engineered nanomaterials. Their biological impact in aquatic organisms has been associated with dissolution, but there is also evidence of nanospecific effects. In this study waterborne uptake and efflux kinetics isotopically labeled (68)ZnO NPs (7.8 ± 1.2 nm), comparison to aqueous (68)Zn bulk particles (up 2 μm), were determined for estuarine snail Peringia ulvae following a 7 d exposure (nominally 20 μg L(-1)) 28...
Abstract The present study examined the relative importance of copper (aqueous Cu and CuO particles different sizes) added to sediment determine bioaccumulation, toxicokinetics, effects in deposit feeder Potamopyrgus antipodarum . In experiment 1, bioaccumulation (240 µg Cu/g dry wt sediment) as aqueous (CuCl 2 ), nano‐ (6 nm, 100 nm), or micro‐ (<5 µm) adult snails was measured. 2, a more comprehensive analysis toxicokinetics Cu, 6 nm) conducted. 3, form nm CuO) on juvenile growth...