Nanomaterial-based biosensors for environmental and biological monitoring of organophosphorus pesticides and nerve agents

A label-free electrochemical strategy for highly sensitive methyltransferase activity assays

A label-free strategy for evaluation of DNA methyltransferase activity was developed based on electrocatalytic oxidation of ascorbic acid by graphene.

Nanomaterials-based optical techniques for the detection of acetylcholinesterase and pesticides

The large amount of pesticide residues in the environment is a threat to global health by inhibition of acetylcholinesterase (AChE). Biosensors for inhibition of AChE have been thus developed for the detection of pesticides. In line with the rapid development of nanotechnology, nanomaterials have attracted great attention and have been intensively studied in biological analysis due to their unique chemical, physical and size properties. The aim of this review is to provide insight into nanomaterial-based optical techniques for the determination of AChE and pesticides, including colorimetric and fluorescent assays and surface plasmon resonance.

Nanomaterials-based electrochemical detection of chemical contaminants

Recent advances in the development of nanomaterials-based electrochemical sensors for environmental monitoring and food safety applications are assessed.