Food Chemistry, Год журнала: 2024, Номер 452, С. 139534 - 139534
Опубликована: Апрель 30, 2024
Язык: Английский
Journal of Hazardous Materials, Год журнала: 2024, Номер 476, С. 135172 - 135172
Опубликована: Июль 10, 2024
Язык: Английский
Процитировано
7
Comprehensive Reviews in Food Science and Food Safety, Год журнала: 2024, Номер 23(4)
Опубликована: Июнь 25, 2024
Abstract Low‐cost, reliable, and efficient biosensors are crucial in detecting residual heavy metal ions (HMIs) food products. At present, based on distance‐induced localized surface plasmon resonance of noble nanoparticles, enzyme‐mimetic reaction nanozymes, chelation chelators, the constructed optical sensors have attracted wide attention HMIs detection. Besides, enrichment signal amplification strategy nanomaterials construction electrochemical aptamer sensing platforms, developed overcome plague low sensitivity, poor selectivity, inability multiplexed detection strategy. Moreover, along with an in‐depth discussion these different types biosensors, a detailed overview design application innovative devices principles was provided, including microfluidic systems, hydrogel‐based test strip technologies. Finally, challenges that hinder commercial also been mentioned. Overall, this review aims to establish theoretical foundation for developing accurate reliable technologies HMIs, thereby promoting widespread food.
Язык: Английский
Процитировано
6
Analytical Chemistry, Год журнала: 2024, Номер 96(11), С. 4665 - 4672
Опубликована: Март 8, 2024
Detecting scandium (Sc) with high selectivity and sensitivity is a challenging task due to its chemical similarity other rare earth ions. Our findings show that the fluorescence of complex fluorescent indicator calcein (CL) quenched under acidic conditions (pH = 2), Sc3+ strongly inhibits this process. The results demonstrate CL forms multimers precipitates out solution conditions, while causes significant decrease in scattering intensity solution. Additional experiments revealed strong Lewis acid nature complexes carboxyl groups leads increased dispersion even thus enhancing absorption fluorescence. complexation ratio was investigated through spectral titrations theoretical calculations. interaction between strongest among common metal ions smallest ionic radius, resulting selectivity. turn-on strategy had linear range 0.04 2.25 μM optimal detection limit 20 nM for Sc3+. combination 3D printing smartphone program allows portable on-site analysis Mineral water samples were used potential rapid, selective, sensitive low levels
Язык: Английский
Процитировано
4
Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157693 - 157693
Опубликована: Ноя. 1, 2024
Язык: Английский
Процитировано
4
Analytical Chemistry, Год журнала: 2024, Номер 96(28), С. 11525 - 11532
Опубликована: Июль 5, 2024
The urgent need for field detection of uranium in seawater is 2-fold: to provide prompt guidance extraction and prevent human exposure nuclear radiation. However, current methods this purpose are largely hindered by bulky instrumentation, high costs developed materials, severe matrix interferences, which limit their further application the field. Herein, we demonstrated a portable label-free strategy uranyl based on efficient photocleavage DNA. Further experiments confirmed generation ultraviolet (UV) light-induced reactive oxygen species (ROS), such as O2•– •OH, fragmented oligomeric DNA presence UV light. Detailed studies showed that significantly enhances absorption UV–visible region, leading more ROS. A fluorescence system selective was established immobilizing two complementary oligonucleotides with fluorescent dye SYBR Green I. UV-induced offers selectivity, excellent interference immunity, sensitivity uranyl, 6.8 nM. Additionally, can be visually detected using 3D-printed miniaturized device integrated smartphone. This method has been successfully applied on-site 18 Chinese coastal cities along coast Hainan Island within 3 min single sample. sample testing analysis results indicate promising potential real-time monitoring trace China's waters. It expected utilized rapid assessment contamination engineering construction.
Язык: Английский
Процитировано
3
Microchemical Journal, Год журнала: 2024, Номер unknown, С. 111739 - 111739
Опубликована: Сен. 1, 2024
Язык: Английский
Процитировано
3
Journal of Molecular Structure, Год журнала: 2024, Номер 1323, С. 140733 - 140733
Опубликована: Ноя. 13, 2024
Язык: Английский
Процитировано
3
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 19, 2025
Abstract Transition metals especially Fe‐based catalysts representing an emerging type of enzyme‐mimicking materials are great interest in biosensing and therapy fields. However, the poor affinity toward H 2 O limits their catalytic activity while high‐precise controllable regulation engineering nanozymes remains a challenge. Herein, facile approach is presented to fabricate FeCu/hemin aerogel with self‐supported, hierarchically porous network structures through second metal center surface ligand engineering, achieving sequential ‐affinity amplification. Excitingly, for exhibits 14.03‐fold enhancement than that Fe particle, accompanied 5.88‐fold efficiency ( K cat / m ) increase FeCu. Mechanism studies suggest Cu hemin modifications upshift d ‐band from −0.49 −0.17 eV promote electron transfer process, thus facilitating dissociation . Importantly, allow highly sensitive detection norfloxacin low limit 72 n Notably, it shows remarkable inhibition on bacterial growth vitro vivo no apparent side effects. Therefore, this work not only sheds light rational design active stable properties, but also offers new prospects tuning boost enzyme‐mimic activity.
Язык: Английский
Процитировано
0
Sensors and Actuators B Chemical, Год журнала: 2025, Номер unknown, С. 137613 - 137613
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0
Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116565 - 116565
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0