期刊
MOLECULES
卷 26, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/molecules26051370
关键词
nano-enabled products; engineered nanomaterials; exposure potential; characterisation
资金
- South African Department of Science and Technology (DST) under the Nanotechnology Health, Safety and Environment Risk Research Platform [0085/2015]
Analytical limitations have hindered the determination of nanopollution characteristics from nano-enabled products (NEPs), which are actual sources of nanopollution. This study examined the properties of engineered nanomaterials (ENMs) in 18 commercial products, revealing their diverse morphologies and negative charges. Despite identifying key ENM characteristics for environmental risk assessment, challenges persist in accurately determining concentrations in NEPs.
Analytical limitations have constrained the determination of nanopollution character from real-world sources such as nano-enabled products (NEPs), thus hindering the development of environmental safety guidelines for engineered nanomaterials (ENMs). This study examined the properties of ENMs in 18 commercial products: sunscreens, personal care products, clothing, and paints-products exhibiting medium to a high potential for environmental nanopollution. It was found that 17 of the products contained ENMs; 9, 3, 3, and 2 were incorporated with nTiO(2), nAg, binaries of nZnO + nTiO(2), and nTiO(2) + nAg, respectively. Commonly, the nTiO(2) were elongated or angular, whereas nAg and nZnO were near-spherical and angular in morphology, respectively. The size ranges (width x length) were 7-48 x 14-200, 34-35 x 37-38, and 18-28 nm for nTiO(2), nZnO, and nAg respectively. All ENMs were negatively charged. The total concentration of Ti, Zn, and Ag in the NEPs were 2.3 x 10(-4)-4.3%, 3.4-4.3%, and 1.0 x 10(-4)-11.3 x 10(-3)%, respectively. The study determined some key ENM characteristics required for environmental risk assessment; however, challenges persist regarding the accurate determination of the concentration in NEPs. Overall, the study confirmed NEPs as actual sources of nanopollution; hence, scenario-specific efforts are recommended to quantify their loads into water resources.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据