Engineered Nanomaterials in Soil: Problems in Assessing Their Effect on Living Organismsстатья
Информация о цитировании статьи получена из
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Дата последнего поиска статьи во внешних источниках: 4 февраля 2014 г.
Аннотация:Abstract—Studies on the occurrence and potential effects of nanomaterials (NMs) in the environment are
analyzed. Mechanisms of action of some of the wellknown nanotechnological products on test cultures are
discussed. Attention is focused on the problems of determination of the ecotoxicity of NMs in soils in relation
to their instability and variability in the environmental conditions. Our data indicate that the effect of the
interactions between the nanoparticles should be taken into consideration in econanotoxicological studies.
The formation of aggregates at high concentrations of nanoparticles and an increase in the content of free
nanoparticles upon dilution largely explain the inverted dose–response ratio, or the Ushaped curve describ
ing this relationship in the analysis of dispersed systems. Problems in the development of an assessment sys
tem for the effect of NMs on environments, including soils, are also discussed. Presently, there are no stan
dards for assessing NMs, and approved Russian and international procedures for checking the sensitivity of
standardized test organisms are used. However, the imperfection of the approaches to the analysis of NMs
toxicity gives no ground for hampering the development of nanotechnologies for nature conservation pur
poses.