In todays’ world with its widespread usage of personal-care products, pharmaceuticals, surfactants, flame retardants, plasticizers, various industrial additives, metals and metalloids, pesticides, and pesticide metabolites, environmental contaminants are an increasing source of pollution with a severe effect on the ecological system. Industries that produce these contaminants must find answers to remediate this. Nanomaterials in Environmental Analysis contributes to solving this problem by providing researchers in industry and academia with promising applications of nanoparticles in detection techniques and in removal of chemical species from the environment. Each chapter covers an aspect of using nanoparticles in detecting, measuring and remediating toxic chemical species in the environment.