Impact of nanotechnology on progress of flow methods in chemical analysis: A review

Trojanowicz, Marek

doi:10.1016/j.aca.2023.341643

Cited by 2 publications

(1 citation statement)

References 250 publications

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“…While some electrocatalytic parameters are lower compared to previously reported electrodes, it is important to emphasize the satisfactory outcomes achieved with our detection system. The combination of screen-printed electrodes, offering a robust blend of efficiency and functional versatility, with a flow injection system (FIA) for efficient process automation, enhances both productivity and reproducibility of analysis [ 53 ]. Additionally, the FIA system's low reagent consumption and reduced waste generation contribute to its environmental friendliness and long-term economic viability [ 54 ].…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Detection of Bisphenol A Based on Gold Nanoparticles/Multi-Walled Carbon Nanotubes: Applications on Glassy Carbon and Screen Printed Electrodes

Luis-Sunga,

Carinelli,

García

et al. 2024

Sensors

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Bisphenol A (BPA) has been classified as an endocrine-disrupting substance that may cause adverse effects on human health and the environment. The development of simple and sensitive electrochemical biosensors is crucial for the rapid and effective quantitative determination of BPA. This work presents a study on electrochemical sensors utilizing gold nanoparticle-modified multi-walled carbon nanotubes (CNT/AuNPs). Glassy carbon electrodes (GCEs) and screen-printed electrodes (SPEs) were conveniently modified and used for BPA detection. AuNPs were electrodeposited onto the CNT-modified electrodes using the galvanostatic method. The electrodes were properly modified and characterized by using Raman spectroscopy, cyclic voltammetry (CV), and electrochemical impedance analysis (EIS). The electrochemical response of the sensors was studied using differential pulse voltammetry (DPV) and constant potential amperometry (CPA) for modified GCE and SPE electrodes, respectively, and the main analytical parameters were studied and optimized. Problems encountered with the use of GCEs, such as sensor degradation and high limit of detection (LOD), were overcome by using modified SPEs and a flow injection device for the measurements. Under this approach, an LOD as low as 5 nM (S/N = 3) was achieved and presented a linear range up to 20 μM. Finally, our investigation addressed interference, reproducibility, and reusability aspects, successfully identifying BPA in both spiked and authentic samples, including commercial and tap waters. These findings underscore the practical applicability of our method for accurate BPA detection in real-world scenarios. Notably, the integration of SPEs and a flow injection device facilitated simplified automation, offering an exceptionally efficient and reliable solution for precise BPA detection in water analysis laboratories.

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Section: Resultsmentioning

confidence: 99%

Electrochemical Detection of Bisphenol A Based on Gold Nanoparticles/Multi-Walled Carbon Nanotubes: Applications on Glassy Carbon and Screen Printed Electrodes

Luis-Sunga,

Carinelli,

García

et al. 2024

Sensors

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Rolling Stone Gathers Moss: Rolling Microneedles Generate Meta Microfluidic Microneedles (MMM)

Zhou,

Dong,

Wei

et al. 2024

Adv Funct Materials

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Microfluidic chips play crucial roles while lack satisfactory controllability and comprehensive functionality. Inspired by biological systems, this study proposes a method utilizing rolling microneedles (RMNs) to generate muti‐structured templates, realizing photonic crystal membrane (PC) based meta microfluidic microneedle chip (MMM) for efficient wound management. This approach offers advantages in terms of speed and cost‐effectiveness, achieving dual‐sided permeation and patterned design by directly RMNs at desired locations, serving as both template tools for microneedle fabrication. The integration of RMNs with a PC membrane results in the design of 3D multilayer microfluidic channels, effectively addressing issues related to spontaneous fluid flow. As fluid reaches the PC membrane, it generates distinctive structural colors and exhibits fluorescence enhancement, enabling the monitoring of inflammatory factors in mouse wounds and facilitating efficient wound management. In summary, this preparation method involving RMNs paves the way for the design and fluid control of microfluidic chips. This bioinspired patch holds significant potential not only for wound management but also for areas such as clinical drug delivery and point‐of‐care testing (POCT).

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Impact of nanotechnology on progress of flow methods in chemical analysis: A review

Cited by 2 publications

References 250 publications

Electrochemical Detection of Bisphenol A Based on Gold Nanoparticles/Multi-Walled Carbon Nanotubes: Applications on Glassy Carbon and Screen Printed Electrodes

Electrochemical Detection of Bisphenol A Based on Gold Nanoparticles/Multi-Walled Carbon Nanotubes: Applications on Glassy Carbon and Screen Printed Electrodes

Rolling Stone Gathers Moss: Rolling Microneedles Generate Meta Microfluidic Microneedles (MMM)

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