Nano-ecotoxicology of natural and engineered nanomaterials for microorganisms

Maximiliano Cledón, Satinder Kaur Brar, Tian C. Zhang

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Scopus citations


This chapter focuses on the nano-ecotoxicology of natural and engineered nanomaterials (NMs) in relation to microorganisms. Starting with mobility, bioavailability, and degradability of NMs in the environment, the chapter moves on to discuss general considerations of NM toxicity and ecotoxicity. The chapter then focuses on comet and micronucleus assays, including the K micronuclei and Ames tests and high-throughput screening and current status in related areas. Many reports indicate that NMs induce the formation of reactive oxygen species in cells and consequent inflammatory, mutagenic, or cellular death can occur. The physiological pathways of nanometals are poorly understood, and developments in this area are delayed by a lack of methods for measuring nanoparticles in natural conditions. The assays and results presented in the chapter highlight the need to investigate possible scenarios of interaction between NMs and the surrounding microenvironment.

Original languageEnglish (US)
Title of host publicationNanomaterials in the Environment
PublisherAmerican Society of Civil Engineers (ASCE)
Number of pages30
ISBN (Electronic)9780784479254
ISBN (Print)9780784414088
StatePublished - Jan 1 2015


ASJC Scopus subject areas

  • Engineering(all)
  • Environmental Science(all)

Cite this

Cledón, M., Brar, S. K., & Zhang, T. C. (2015). Nano-ecotoxicology of natural and engineered nanomaterials for microorganisms. In Nanomaterials in the Environment (pp. 439-468). American Society of Civil Engineers (ASCE).