safety and risk associated with nanoparticles - a review安全与风险相关的纳米粒子,复习一下.pdf

Journal of Minerals Materials Characterization Engineering, Vol. 9, No.5, pp.455-459, 2010 Printed in the USA. All rights reserved Safety and Risk Associated with Nanoparticles - A Review 1* 1 2 Vinita Vishwakarma , Subhranshu Sekhar Samal N. Manoharan 1Centre for Nanoscience and Nanotechnology (A Joint Initiative of IGCAR, Kalpakkam Sathyabama University, Chennai ) 2Sathyabama University, Chennai, India-600119 *Corresponding author: vinitavishwakarma1@ ABSTRACT The emerging field of nanotechnology has created risk for environment and human health. Nanoparticles are not a recent discovery. It has existed for many years. Today synthesis of nanoparticles takes place for many applications in various field of science, technology, medicine, colloid technologies, diagnostics, drug delivery, health impacts, food, personal care applications etc. In spite of this, toxicology of nanoparticles is poorly understood as there are no sufficient methods to test nanoparticles for health, safety and environmental impacts, especially in the size range lower than 50nm. Key Words: Nanosafety, nanoparticles, nanotoxicity, health and risk, environmental impact 1. BACKGROUND The behavior of nanoparticles is relatively different from larger particles of the identical material. There is a correlation between a decrease in particle size and an increase in toxicity, because of larger surface area. The ability of nanoparticles to penetrate deep into our respiratory system and their better assimilation in the body fluids make them unique. 2. NANOPARTICL