Gold and Silver nanoparticles (AuNPs and AgNPs) are perfect platforms for develo**
sensing colorimetric devices thanks to their high surface to volume ratio and distinctive …

The paper-based sensing devices have drawn a broad interest in analytical chemistry for
colorimetric and fluorescent-based analysis of biological, environmental, clinical, and food …

We report an inkjet-printed paper based colorimetric sensor with silver nanoparticles
(AgNPs) using smartphone and color detector App for on-site determination of mercuric ion …

On-site analysis can provide qualitative or/and quantitative information of samples at the
sample location. Up to date, a variety of portable instruments have been available for on-site …

A facile one-step carbonization approach is reported herein for the sustainable hydrothermal
synthesis of fluorescent blue nitrogen-doped carbon quantum dots (NCQDs) using banana …

Printing technology promises a viable solution for the low-cost, rapid, flexible, and mass
fabrication of biosensors. Among the vast number of printing techniques, screen printing and …

Food safety is a burning global issue in this present era. The prevalence of harmful food
additives and contaminants in everyday food is a significant cause for concern as they can …

Presently, the use of several pesticides has been continuously rising owing to the increase
in the production of food materials to meet the requirements of the growing population of the …

Sulfadimethoxine antibiotics (SDM) are commonly used in aquatic foods to inhibit bacteria,
but their residues in aquatic food pose certain risks to public health. Herein, we developed a …

The present work describes a simple hands-on experiment kit for colorimetric quantification
of ferric (III) ion (Fe3+) in an aqueous medium using anthocyanin extracted from Ruellia …