Lehutso, Raisibe FTancu, YolandaMaity, ArjunThwala, Melusi2021-03-292021-03-292021-03Lehutso, R.F., Tancu, Y., Maity, A. & Thwala, M. 2021. Characterisation of engineered nanomaterials in nano-enabled products exhibiting priority environmental exposure. <i>Molecules, 26(5).</i> http://hdl.handle.net/10204/119291420-3049http://hdl.handle.net/10204/11929Analytical 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 nTiO2, nAg, binaries of nZnO + nTiO2, and nTiO2 + nAg, respectively. Commonly, the nTiO2 were elongated or angular, whereas nAg and nZnO were near-spherical and angular in morphology, respectively. The size ranges (width × length) were 7–48 × 14–200, 34–35 × 37–38, and 18–28 nm for nTiO2, nZnO, and nAg respectively. All ENMs were negatively charged. The total concentration of Ti, Zn, and Ag in the NEPs were 2.3 × 10-4–4.3%, 3.4–4.3%, and 1.0 × 10-4–11.3 × 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.FulltextenNano-enabled productsEngineered nanomaterialsExposure potentialCharacterisationArticleLehutso, R. F., Tancu, Y., Maity, A., & Thwala, M. (2021). Characterisation of engineered nanomaterials in nano-enabled products exhibiting priority environmental exposure. <i>Molecules, 26(5)</i>, http://hdl.handle.net/10204/11929Lehutso, Raisibe F, Yolanda Tancu, Arjun Maity, and Melusi Thwala "Characterisation of engineered nanomaterials in nano-enabled products exhibiting priority environmental exposure." <i>Molecules, 26(5)</i> (2021) http://hdl.handle.net/10204/11929Lehutso RF, Tancu Y, Maity A, Thwala M. Characterisation of engineered nanomaterials in nano-enabled products exhibiting priority environmental exposure. Molecules, 26(5). 2021; http://hdl.handle.net/10204/11929.TY - Article AU - Lehutso, Raisibe F AU - Tancu, Yolanda AU - Maity, Arjun AU - Thwala, Melusi AB - 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 nTiO2, nAg, binaries of nZnO + nTiO2, and nTiO2 + nAg, respectively. Commonly, the nTiO2 were elongated or angular, whereas nAg and nZnO were near-spherical and angular in morphology, respectively. The size ranges (width × length) were 7–48 × 14–200, 34–35 × 37–38, and 18–28 nm for nTiO2, nZnO, and nAg respectively. All ENMs were negatively charged. The total concentration of Ti, Zn, and Ag in the NEPs were 2.3 × 10-4–4.3%, 3.4–4.3%, and 1.0 × 10-4–11.3 × 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. DA - 2021-03 DB - ResearchSpace DP - CSIR J1 - Molecules, 26(5) KW - Nano-enabled products KW - Engineered nanomaterials KW - Exposure potential KW - Characterisation LK - https://researchspace.csir.co.za PY - 2021 SM - 1420-3049 T1 - Characterisation of engineered nanomaterials in nano-enabled products exhibiting priority environmental exposure TI - Characterisation of engineered nanomaterials in nano-enabled products exhibiting priority environmental exposure UR - http://hdl.handle.net/10204/11929 ER -24363