Gadolinium as an Emerging Microcontaminant in Water Resources: Threats and Opportunities

Geosciences, Journal Year: 2019, Volume and Issue: 9(2), P. 93 - 93

Published: Feb. 17, 2019

As a result of high doses paramagnetic gadolinium (Gd) chelates administered in magnetic resonance imaging (MRI) exams, their unmetabolized excretion, and insufficient removal wastewater treatment plants (WWTPs), large amounts anthropogenic Gd (Gdanth) are released into surface water. The upward trend gadolinium-based contrast agent (Gd-CA) administrations is expected to continue growing consequently higher concentrations annually recorded water resources, which can pose great threat aquatic organisms human beings. In addition, the feasibility retention patients with Gd-CAs repeatedly, even potentially fatal diseases, including nephrogenic systemic fibrosis (NSF), due trace have recently arisen severe health concerns. Thus, there need investigate probable adverse effects currently marketed meticulously modify actual approach using media daily practice order minimize unknown possible risks. Furthermore, employment enhanced processes that capable removing stable agents, evaluation ecotoxicity exposure these emerging contaminants through dermal ingestion pathways deserve more attention. On other hand, point source releases environment presents opportunity assess water—groundwater interactions fate plume as proxy for potential presence microcontaminants associated treated freshwater marine systems.

Language: Английский

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Aptamer-based-sorbents for sample treatment—a review

Analytical and Bioanalytical Chemistry, Journal Year: 2014, Volume and Issue: 407(3), P. 681 - 698

Published: Oct. 6, 2014

Language: Английский

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Tailoring Interfacial Nanoparticle Organization through Entropy

Accounts of Chemical Research, Journal Year: 2018, Volume and Issue: 51(4), P. 900 - 909

Published: March 28, 2018

ConspectusThe ability to tailor the interfacial behaviors of nanoparticles (NPs) is crucial not only for design novel nanostructured materials with superior properties and interest many promising applications such as water purification, enhanced oil recovery, innovative energy transduction, but also a better insight into biological systems where nanoscale particles proteins or viruses can interact organize at certain interfaces. As class emerging building blocks, Janus NPs consisting two compartments different chemistry polarity are ideal candidates generate tunable stable nanostructures because asymmetric nature. However, precise control over toward controllable order even responses various external stimuli still remains great challenge interfaces do simply serve scaffold rather induce complex enthalpic entropic interactions.In this Account, we focus on our efforts exploiting entropy strategies based computational spatial distribution ordering systems. First, introduce physical principle ordering, being theoretical basis entropy-directed self-assembly. The typical types entropy, which have been harnessed manipulate NP organization, then summarized, including conformational shape rotational vibrational entropy. Next, describe pathways in development environmentally responsive involve use access stimuli-responsive nanostructures. Taking one step further, how molecular architectures be tailored tune contributions self-assembly demonstrated, through identifying effects intrinsic block segments, chain length stiffness, entropy-governed organization copolymer Finally, detail some key factors tailoring entropy.In summary, offer abundant framework precisely programming structural We discuss future directions signify NPs. hope that Account will promote further fundamental research wide designed assemblies new functional nanomaterials beyond.

Language: Английский

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Critical assessment of recent trends related to screening and confirmatory analytical methods for selected food contaminants and allergens

TrAC Trends in Analytical Chemistry, Journal Year: 2019, Volume and Issue: 121, P. 115688 - 115688

Published: Oct. 17, 2019

Food contaminants monitoring is conducted in an intensive manner yet, there are still food safety scandals related to various chemical compounds. This fact highlights the need review requirements posed by current legal framework on analytical methods performance and evaluate its application published studies. Herein, we present inventory including more than 470 publications screening confirmatory methods, which were used control hazardous compounds such as pesticides, antibiotics, mycotoxins, aquatic toxins allergens. Analytical characteristics, trends state of art, both merits shortcomings, critically discussed summarized excel tabulations. repository ever-increasing use necessity confirm their applying methods. In conclusion, effort needed validation benchmarking, especially newly developed technology smartphone-based avoid false-negative results ensure that fit for purpose.

Language: Английский

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Imprinting Technology for Effective Sorbent Fabrication: Current State-of-Art and Future Prospects

Materials, Journal Year: 2021, Volume and Issue: 14(8), P. 1850 - 1850

Published: April 8, 2021

In the last 10 years, we have witnessed an extensive development of instrumental techniques in analytical methods for determination various molecules and ions at very low concentrations. Nevertheless, presence interfering components complex samples hampered applicability new strategies. Thus, additional sample pre-treatment steps were proposed to overcome problem. Solid sorbents used clean-up but insufficient selectivity commercial materials limited their utility. Here, application molecularly imprinted polymers (MIPs) or ion-imprinted (IIPs) separation processes recently attracted attention due many advantages, such as high selectivity, robustness, costs fabrication process. Bulk monoliths, microspheres core-shell materials, magnetically susceptible stir-bar are applicable different modes solid-phase extraction determine target analytes a environment blood, urine, soil, food. The capability perform specific enantiomers is substantial advantage clinical analysis. gained interest trace analysis pollutants environmental samples. this review, current synthetic approaches preparation MIPs IIPs comprehensively discussed together with detailed characterization respective materials. Furthermore, use environmental, food, biomedical analyses will be emphasized point out limits highlight future prospects further field.

Language: Английский

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