alexa Nanogold-based sensing of environmental toxins: excitement and challenges.
Healthcare

Healthcare

Medical Safety & Global Health

Author(s): Ray PC, Yu H, Fu PP, Ray PC, Yu H, Fu PP

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Abstract There have been tremendous advances in the past ten years on the development of various nanomaterials-based sensors for detection of environmental toxins. Nanogold is of special interest because of its unique shape- and size-dependent optical properties, hyper-quenching ability, super surface-enhanced Raman and dynamic light scattering, and surface-modifiability by small organic molecules and biomolecules. These unique optical properties of nanogold have been explored for ultra-sensitive detection, while its surface-modifiability has been explored for selectivity. In general, the nanogold-based sensors are highly selective and sensitive along with simple sample preparation and sensor design. In this review article, we intend to capture some of the recent advances in nanogold-based sensor development and mechanistic studies, especially for bacteria, heavy metals, and nitroaromatic compounds. Undoubtedly, these developments will generate a lot of excitement for environmental scientists and toxicologists as well as the general public. This article was published in J Environ Sci Health C Environ Carcinog Ecotoxicol Rev and referenced in Medical Safety & Global Health

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