Freshwater Sediment Characterization Factors of Copper Oxide Nanoparticles

Yubing Pu,Bertrand Laratte,Rodica Elena Ionescu

doi:10.1088/1742-6596/51/1/012020

Abstract

Wide use of engineered nanoparticles (ENPs) is likely to result in the eventually accumulation of ENPs in sediment. The benthic organisms living in sediments may suffer relatively high toxic effects of ENPs. This study has selected copper oxide nanoparticles (nano-CuO) as a research object. To consider the impacts of spatial heterogeneity on ENPs toxicity, the characterization factor (CF) derived from life cycle assessment (LCA) methodology is used as an indicator in this study. A nano-specific fate model has been used to calculate the freshwater sediment fate factor (FF) of nano-CuO. A literature survey of the nano-CuO toxicology values has been performed to calculate the effect factor (EF). Seventeen freshwater sediment CFs of nano-CuO are proposed as recommended values for subcontinental regions. The region most likely to be affected by nano-CuO is northern Australia (CF of 21.01·103 CTUe, comparative toxic units) and the least likely is northern Europe and northern Canada (CF of 8.55·103 CTUe). These sediment CFs for nano-CuO could be used in the future when evaluating the ecosystem impacts of products containing nano-CuO by LCA method.

Highlights

The volume of production of nanomaterials (NMs) have grown extensively over the last decade.[1]
This study has selected copper oxide nanoparticles as a research object due to their relatively high toxicity than other metal oxide nanoparticles[10] The aim of this study is to propose the freshwater sediment characterization factor (CF) of nano-CuO for different regions
The adapted characterization factor (CF, unit: potentially affected fraction (PAF)·m3·day·kg-1) of a substance for freshwater sediment is the product of three factors: fate factor (FF, unit: day), exposure factor (XF, unit: dimensionless) and effect factor (EF, unit: PAF·m3 ·kg-1):[9]

Summary

Introduction

The volume of production of nanomaterials (NMs) have grown extensively over the last decade.[1]. The benthic organisms living in sediments may suffer relatively high toxic effects of ENPs.[7]

Objectives

Methods

Results