Environment monitoring, security and food quality control Detection of Health Hazard Compounds in Food and Environmental Samples using Luminescent Nanomaterials

It is well known that excessive usage of toxic chemicals such as heavy metal ions, pesticides, dyes etc., bring serious health problems to living organisms and are threat to the environment. Furthermore, these toxic compounds are responsible for contributing to biodiversity losses and deterioration of natural habitats. Thus, it is essential to detect toxic compounds in food and environmental samples to protect the environment and human health.

Luminescent methods have received much attention to detect toxic compounds because of they are simple and affordable, they provide high sensitivity, usually are low time-consuming, and in general terms, they are adoptable for online monitoring and ease of handling. Frequently, organic fluorophores are commonly used for detection of toxic compounds. Nevertheless, such organic compounds are often soluble only in organic solvents, and they suffer from notorious limitations such as low signal intensities, and fast photobleaching. 

Luminescent nanomaterials (metallic nanoclusters, graphene quantum dots etc.) are considered as alternative candidates to overcome the above-mentioned limitations. The optical properties of luminescent nanomaterials strongly depend on the nature of capping ligands, size, shape, and dielectric medium etc., The absorption and emission spectral changes induced by the association of luminescent nanomaterials will be helpful for the quantification of the toxic analytes of interest, and simple detection strategies and kits will be developed for detection of hazard chemicals in food and environmental samples.