A convenient fluorescent/electrochemical dual-mode biosensor for accurate detection of Pb2+based on DNAzyme cycle

Article Chemistry, Analytical

A fluorescent aptasensor for Pb2+ detection based on gold nanoflowers and RecJf exonuclease-induced signal amplification

Ruike Liu et al.

Summary: A fluorescent aptasensor was developed for the detection of lead ion. The sensor exhibited high selectivity and sensitivity, making it suitable for the identification of lead ions in real samples.

ANALYTICA CHIMICA ACTA (2022)

添加到收藏夹

Article Environmental Sciences

A simple electrochemiluminesecence aptasenor using a GCE/NCQDs/aptamers for detection of Pb2+

Danyang Li et al.

Summary: An ECL aptasensor for detecting Pb2+ was prepared using nitrogen-doped carbon quantum dots. The sensor showed a wide detection range and low detection limit, with good stability.

ENVIRONMENTAL TECHNOLOGY (2022)

添加到收藏夹

Article Biophysics

A facile dual-mode aptasensor based on AuNPs@MIL-101 nanohybrids for ultrasensitive fluorescence and surface-enhanced Raman spectroscopy detection of tetrodotoxin

Sha Liu et al.

Summary: This study presented a facile dual-mode aptamer-based biosensor for ultrasensitive fluorescence and SERS detection of TTX using AuNPs@MIL-101 nanohybrids, showing excellent linear relationships with TTX concentrations and high detection sensitivities.

BIOSENSORS & BIOELECTRONICS (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Electrochemical determination of trace amounts of lead ions using D-penicillamine-functionalized graphene quantum dot-modified glassy carbon electrode

Mina Hadidi et al.

Summary: In this study, a new catalyst, GQD-DPA, was successfully prepared by covalent functionalization of graphene quantum dot with D-penicillamine. The modified electrode, GQD-DPA/GCE, exhibited improved sensitivity and selectivity for Pb2+ determination, showing linear behavior in the concentration range of 0.03 to 2.8 nM with a calculated detection limit of 0.01 nM. The sensor demonstrated interference-free behavior and was used for accurate determination of Pb2+ ions in tap water and river water samples.

JOURNAL OF THE IRANIAN CHEMICAL SOCIETY (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Surface-functionalized fluorescent carbon dots (CDs) for dual-mode detection of lead ions

Amy Bamrah et al.

Summary: In this study, highly fluorescent carbon dots functionalized with 3-mercaptopropionic acid (3-MPA) were synthesized and used as a dual-mode optical sensor probe for Pb2+ ions. The nanosensor showed high sensitivity and selectivity with a rapid response towards Pb2+ ions in spiked real water samples.

CHEMICAL PAPERS (2022)

添加到收藏夹

Article Chemistry, Applied

An ultra-sensitive electrochemical aptasensor for simultaneous quantitative detection of Pb2+ and Cd2+ in fruit and vegetable

Min Yuan et al.

Summary: An electrochemical aptasensor based on aptamer was designed for simultaneous detection of Cd2+ and Pb2+ in fruit and vegetable. The sensor showed linear response and low detection limits, with excellent stability and reproducibility. The sensor was also tested on digested samples, exhibiting good recovery rates.

FOOD CHEMISTRY (2022)

添加到收藏夹

Article Environmental Sciences

Ultrasensitive electrochemiluminescence aptasensor based on ABEI reduced silver nanoparticles for the detection of profenofos

Jie Han et al.

Summary: An ultrasensitive electrochemiluminescence aptasensor was developed and successfully applied to the detection of profenofos in vegetables. The sensor exhibited a low limit of detection and good specificity, making it a promising tool for pesticide detection.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

添加到收藏夹

Article Chemistry, Applied

Metal-induced G-quadruplex polymorphism for ratiometric and label-free detection of lead pollution in tea

Yanping Wu et al.

Summary: The study introduced a unique aptamer probe construction method for label-free and ratiometric detection of lead in tea, showing high specificity and accuracy. The probe design utilizes dual fluorescent signal outputs under single-wavelength excitation for Pb2+ recognition, outperforming single fluorescent reporter-based analyses.

FOOD CHEMISTRY (2021)

添加到收藏夹

Article Biophysics

A novel electrochemiluminescence aptasensor based on copper-gold bimetallic nanoparticles and its applications

Jingcheng Huang et al.

Summary: A novel electrochemiluminescence aptasensor was developed for the detection of four organophosphorus pesticides, showing a wide dynamic range and ultra-low detection limit. The sensor exhibited good stability, reproducibility, and specificity in detecting OPs residues in vegetables. This work provided an effective method for constructing a simple, rapid, and sensitive biosensor.

BIOSENSORS & BIOELECTRONICS (2021)

添加到收藏夹

Article Environmental Sciences

Carboxyl-functionalized hollow polymer microspheres for detection of trace metal elements in complex food matrixes by ICP-MS assisted with solid-phase extraction

Jiaxing Qin et al.

Summary: Carboxyl-functionalized hollow polymer microspheres (CHPMs) were successfully fabricated as an adsorbent for simultaneous detection of metal ions in food samples. The characterized CHPMs showed high detection sensitivity and stability, with satisfactory detection results in food samples.

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY (2021)

添加到收藏夹

Article Engineering, Environmental

Novel Au-tetrahedral aptamer nanostructure for the electrochemiluminescence detection of acetamiprid

Yemin Guo et al.

Summary: An ultrasensitive and selective electrochemiluminescence (ECL) aptasensor with Au-tetrahedral aptamer nanostructure (Au-TAN) was developed for acetamiprid detection. By optimizing the pH of the buffer solution, the concentration of H2O2, and the concentration of Au-TAN, a detection limit lower than other sensors was achieved. The weak alkaline environment explored in the experiment further expanded the application range of the sensor, showing high accuracy and sensitivity.

JOURNAL OF HAZARDOUS MATERIALS (2021)

添加到收藏夹

Article Chemistry, Analytical

An Electrochemical Aptasensor for Pb2+ Detection Based on Metal-Organic-Framework-Derived Hybrid Carbon

Jina Ding et al.

Summary: A new double-shelled carbon nanocages material was synthesized and developed into an aptasensor for determining Pb2+ in aqueous solution. The aptasensor exhibited a good linear relationship with Pb2+ concentration and detection limits, showing promising applications in environmental monitoring.

BIOSENSORS-BASEL (2021)

添加到收藏夹

Article Chemistry, Analytical

Ultrasensitive electrochemiluminescence aptasensor based on AuNPs@MWCNTs and Au@AgNPs for detection of profenofos residues

Xiaojie Shi et al.

Summary: The ultrasensitive aptasensor based on luminol-hydrogen peroxide (H2O2) electrochemiluminescence (ECL) system showed excellent detection performance for profenofos, with AuNPs@MWCNTs enhancing luminol loading and Au@AgNPs catalyzing H2O2 decomposition for signal amplification. The sensor achieved a detection limit of 5.32 fg/mL and had good specificity, repeatability, and stability.

SENSORS AND ACTUATORS B-CHEMICAL (2021)

添加到收藏夹

Article Agriculture, Multidisciplinary

An Off-On Rhodamine 6G Hydrazide-Based Output Platform for Fluorescence and Visual Dual-Mode Detection of Lead(II)

Xiaoqian Xie et al.

Summary: The synthesized R6GH complex was successfully used in developing a platform for fluorescence and visual dual-mode analysis of Pb2+, showing good response and reliability in various samples.

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY (2021)

添加到收藏夹

Article Food Science & Technology