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dc.contributor.authorXiao, Yinlong
dc.contributor.authorDu, Ying
dc.contributor.authorXiao, Yue
dc.contributor.authorZhang, Xiaohong
dc.contributor.authorWu, Jun
dc.contributor.authorYang, Gang
dc.contributor.authorHe, Yan
dc.contributor.authorZhou, Yaoyu
dc.contributor.authorPeijnenburg, Willie J G M
dc.contributor.authorLuo, Ling
dc.date.accessioned2021-05-23T18:42:11Z
dc.date.available2021-05-23T18:42:11Z
dc.date.issued2021-05-11
dc.identifier.pmid33989917
dc.identifier.doi10.1016/j.ecoenv.2021.112312
dc.identifier.urihttp://hdl.handle.net/10029/624988
dc.description.abstractCopper (Cu) pollution is common in the soil. Due to the widespread application of TiO2 NPs, there is a high propensity for the co-occurrence of TiO2 nanoparticles (NPs) and Cu in agricultural soils. It is therefore imperative to evaluate the joint effects of TiO2 NPs and Cu on crops. In this study, the mutual effects of TiO2 NPs and Cu on their toxicity and accumulation in soybean seedlings and on their fates in a hydroponic system were determined. When Cu was at levels of 1 and 2 mg/L, the co-occurring TiO2 NPs at a non-toxic concentration (10 mg/L) significantly enhanced the toxicity and accumulation of Cu and Ti in soybeans, and inhibited the translocation of Cu from soybean roots to shoots. However, when the Cu concentration for co-exposure was ≥ 5 mg/L, such mutual effects disappeared. The amount of Cu ions adsorbed onto TiO2 NPs after 48 h of co-exposure gradually increased from 31 to 118 mg/g when the Cu concentration was increased from 1 to 20 mg/L. The aggregation and sedimentation of TiO2 NPs were significantly increased after 48 h of co-exposure with the Cu at a concentration higher than 5 mg/L, as compared to the single TiO2 NPs exposure. The increasing aggregation and sedimentation might reduce the bioavailability of TiO2 NPs associated with the adsorbed Cu to soybeans, and consequently alleviate or even neutralize the enhanced toxicity and accumulation of Cu in soybeans exerted by the co-existing TiO2 NPs. Our results thus suggest that consideration of the impact of TiO2 NPs on the phytotoxicity of heavy metals, and specifically Cu, needs to be interpreted with care, and highlight the importance of integrating the interaction and fates of TiO2 NPs and metals into their risk assessment.en_US
dc.language.isoenen_US
dc.rightsCopyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved.
dc.subjectAccumulationen_US
dc.subjectAdsorptionen_US
dc.subjectCuen_US
dc.subjectPhytotoxicityen_US
dc.subjectTiO(2) nanoparticlesen_US
dc.titleElucidating the effects of TiO nanoparticles on the toxicity and accumulation of Cu in soybean plants (Glycine max L.).en_US
dc.typeArticleen_US
dc.identifier.eissn1090-2414
dc.identifier.journalEcotox Environ Saf 2021; 219:112312en_US
dc.source.journaltitleEcotoxicology and environmental safety
dc.source.volume219
dc.source.beginpage112312
dc.source.endpage
dc.source.countryNetherlands


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