Paper-based analytical devices (PADs) have shown great promise for point-of-care testing
and on-site detection of analytes with chemical, biochemical, and environmental importance …

The colorimetric and fluorescent Schiff base sensors have proven to be powerful tools in the
detection of metal ions due to their simplicity, low cost, rapid photophysical response, high …

Ascorbic acid is very important to human health because of its excellent antioxidant effect.
Developing sensitive and on-site detection methods is therefore in high demand. In this …

In this work, a portable multichannel detection instrument based on time-resolved
fluorescence immunochromatographic test strip (TRFIS) was proposed for on-site detecting …

Toxic cations, including heavy metals, pose significant environmental and health risks,
necessitating the development of reliable detection methods. This review investigates the …

Sulfur and nitrogen co-doped carbon dots (NSCDs) were quickly synthesized by the
microwave-assisted method from tri-ammonium citrate and thiourea. NSCDs showed a …

A salicylaldehyde scaffold-based chemoreceptor (Z)-2-(((5-bromopyridin-2-yl) imino) methyl)-
5-(diethylamino) phenol (SAP) with multifarious applications has been designated in this …

Low‐cost, reliable, and efficient biosensors are crucial in detecting residual heavy metal
ions (HMIs) in food products. At present, based on distance‐induced localized surface …

Sensitive and effective detection of xanthine oxidase (XOD) is essential for assessing
human health. Herein, a dual-enzyme-based cascaded reaction system was developed for …

The localized surface plasmon resonance (LSPR) phenomenon of the noble metal
nanoparticles is responsible for their strongly coloured colloidal solutions. The colorimetric …