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Kohatsu MY, Pelegrino MT, Monteiro LR, Freire BM, Pereira RM, Fincheira P, Rubilar O, Tortella G, Batista BL, de Jesus TA, Seabra AB, Lange CN. Comparison of foliar spray and soil irrigation of biogenic CuO nanoparticles (NPs) on elemental uptake and accumulation in lettuce. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:16350-16367. [PMID: 33389577 DOI: 10.1007/s11356-020-12169-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 12/18/2020] [Indexed: 05/23/2023]
Abstract
Nanoparticles (NPs) can be used in several ways in agriculture, including increasing production rates and improving nutritional values in plants. The present study aims to clarify how biogenic copper oxide nanoparticles (CuO NPs) applied by two routes of exposure (foliar spray and soil irrigation) affect the elemental uptake by lettuce. In vivo experiments using lettuce (n = 4) were performed with CuO NPs in comparison with copper salt (CuSO4), considering a final mass added of 20 mg of CuO per plant. The elemental composition of roots was mostly affected by the soil irrigation exposure for both Cu forms (NPs and salt). Neither Cu form added by soil irrigation was translocated to leaves. Copper concentration in leaves was mainly affected by foliar spray exposure for both Cu forms (NPs and salt). All Cu forms through foliar spray were sequestered in the leaves and no translocation to roots was observed. Foliar spray of CuO NPs caused no visual damage in leaves, resulted in less disturbance of elemental composition, and improved dry weight, number of leaves, CO2 assimilation, and the levels of K, Na, S, Ag, Cd, Cr, Cu, and Zn in leaves without causing significant changes in daily intake of most elements, except for Cu. Although Cu concentration increased in leaves by foliar spray of CuO NPs, it remained safe for consumption.
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Affiliation(s)
- Marcio Yukihiro Kohatsu
- Programa de pós-graduação em Ciência e Tecnologia Ambiental (CTA), Universidade Federal do ABC (UFABC), Avenida dos Estados, 5001 - Bairro Santa Terezinha, Santo André, SP, 09210-580, Brazil
| | - Milena Trevisan Pelegrino
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Santo André, Avenida dos Estados, 5001 - Bairro Santa Terezinha, Santo André, SP, 09210-580, Brazil
| | - Lucilena Rebelo Monteiro
- Centro de Química e Meio Ambiente, IPEN/CNEN-SP - Instituto de Pesquisas Energéticas e Nucleares/Comissão Nacional de Energia Nuclear, São Paulo, SP, Brazil
| | - Bruna Moreira Freire
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Santo André, Avenida dos Estados, 5001 - Bairro Santa Terezinha, Santo André, SP, 09210-580, Brazil
| | - Rodrigo Mendes Pereira
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Santo André, Avenida dos Estados, 5001 - Bairro Santa Terezinha, Santo André, SP, 09210-580, Brazil
| | - Paola Fincheira
- Department of Chemical Engineering, Biotechnological Research Center Applied to the Environment (CIBAMA-BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Olga Rubilar
- Department of Chemical Engineering, Biotechnological Research Center Applied to the Environment (CIBAMA-BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Gonzalo Tortella
- Department of Chemical Engineering, Biotechnological Research Center Applied to the Environment (CIBAMA-BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Bruno Lemos Batista
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Santo André, Avenida dos Estados, 5001 - Bairro Santa Terezinha, Santo André, SP, 09210-580, Brazil
| | - Tatiane Araujo de Jesus
- Programa de pós-graduação em Ciência e Tecnologia Ambiental (CTA), Universidade Federal do ABC (UFABC), Avenida dos Estados, 5001 - Bairro Santa Terezinha, Santo André, SP, 09210-580, Brazil
| | - Amedea Barozzi Seabra
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Santo André, Avenida dos Estados, 5001 - Bairro Santa Terezinha, Santo André, SP, 09210-580, Brazil
| | - Camila Neves Lange
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Santo André, Avenida dos Estados, 5001 - Bairro Santa Terezinha, Santo André, SP, 09210-580, Brazil.
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Shi L, Zhang D, Zhao J, Yin M, Liang A, Ghosh S. Small organic molecules act as a trigger in an "unzippering" mechanism to facilitate carbon nanotube dispersion. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 758:143620. [PMID: 33213919 DOI: 10.1016/j.scitotenv.2020.143620] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 10/26/2020] [Accepted: 11/07/2020] [Indexed: 06/11/2023]
Abstract
In binary dispersing agents system, the contribution and roles of different sized molecules to carbon nanotubes (CNTs) dispersion remain unclear, which hinders the understanding of the environmental behaviour and risks of CNTs. This study compared the dispersion of CNTs by m-nitrobenzoic acid (NBA), trans-cinnamic acid (TCA), tannic acid (TA), and their mixtures. The dispersion efficiency of CNTs significantly reduced with the increased solid-phase concentration (Qe) of TA due to the adsorption of TA on newly exposed CNTs surfaces. However, the CNTs dispersion efficiency by NBA or TCA was independent of Qe because the dispersed CNTs surface was completely occupied by NBA or TCA without new exposed sites available for subsequent adsorption. The mixture of NBA or TCA with TA significantly enhanced the dispersion efficiency of CNTs, indicating a synergistic effect of CNTs dispersion. The addition of NBA or TCA decreased the hydrodynamic diameter of CNTs dispersed by TA, which indicated that NBA or TCA facilitated TA wedging into CNTs bundles for more complete separation of CNTs. This study highlighted the triggering effect of small molecules in the "unzippering" mechanism for improving the dispersing efficiency of CNTs by large molecules.
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Affiliation(s)
- Lin Shi
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
| | - Di Zhang
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China.
| | - Jinfeng Zhao
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
| | - Mengnan Yin
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
| | - Aiping Liang
- School of Environmental & Material Engineering, Yantai University, Yantai 264005, China
| | - Saikat Ghosh
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
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Li C, Sun J, Shi J, Liang H, Cao Q, Li Z, Gao Y. Mercury sources in a subterranean spontaneous combustion area. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 201:110863. [PMID: 32544749 DOI: 10.1016/j.ecoenv.2020.110863] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 06/11/2023]
Abstract
Mercury is a toxic, persistent, and mobile contaminant. Coal spontaneous combustion are widely distributed in the world and releases a great deal of Hg. Identifying the burning coal seam is crucial for quickly extinguishing a coalfield fire. Mercury isotopes can be effective for identifying burning coal seams and beneficial for combating coal spontaneous combustion. In this study, Hg isotopic ratios of coal, topsoil, dustfall, sand, coal fire sponges (CFS), and n-topsoil (topsoil near the CFS) from coal fire area No. 9 in the Wuda coalfield were determined using multiple-collector inductively coupled plasma mass spectrometry (MC-ICPMS). Analysis of the correlation coefficients between the δ202Hg and Hg concentrations and the low-temperature ashes indicate that the higher mineral concentration in coal seam No. 9 not only increases the Hg concentration but also leads to more positive δ202Hg values compared to those for coal seam No. 10. By analyzing the Hg isotope characterizations in coal seam No. 9 and No. 10, we determined that Hg isotope characterizations can be useful for discriminating different coal seam Hg values in a coalfield. Significant mass-dependent fractionation (MDF) occur in the coal burning. The fractionation effect of burning and absorption process can play a key role in the δ202Hg more negative of ground surface samples. If Hg isotopes is added, the effect of coal-fire monitoring may be better. In addition, these finding could be used to better understand the transport and cycling of Hg.
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Affiliation(s)
- Chunhui Li
- MOE Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing, 100083, China.
| | - Jiacong Sun
- MOE Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Jiyan Shi
- MOE Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Handong Liang
- State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing, 100083, China.
| | - Qingyi Cao
- State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing, 100083, China
| | - Zhiwei Li
- State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing, 100083, China
| | - Yu Gao
- MOE Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
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Rahmani N, Radjabian T, Soltani BM. Impacts of foliar exposure to multi-walled carbon nanotubes on physiological and molecular traits of Salvia verticillata L., as a medicinal plant. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 150:27-38. [PMID: 32109787 DOI: 10.1016/j.plaphy.2020.02.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 02/14/2020] [Accepted: 02/15/2020] [Indexed: 06/10/2023]
Abstract
Owing to the growing applications of the multi-walled carbon nanotubes (MWCNTs) in the communications and energy industries, they have attracted increasing attention for their effects on the environment and plants. Therefore, we investigated the impact of foliar exposure to MWCNTs on the oxidative stress responses in the Salvia verticillata as a medicinal plant. Furthermore, we evaluated the possible correlations between gene expression and activity of the key enzymes in the phenolic acids biosynthesis pathways and their accumulation in the treated leaves. The leaves of two-month-old plants were sprayed with different concentrations (0-1000 mg L-1) of MWCNTs. Raman's data and Transmission Electron Microscopy images have confirmed the absorption of MWCNTs via epidermal cells layer into the parenchymal cells of the exposed leaves. The results showed that exposure to MWCNTs led to a decrease in the photosynthetic pigments and increases in the oxidative stress indices (enzymatic and non-enzymatic antioxidants) in the leaves with a dose-dependent manner. The content of rosmarinic acid as a main phenolic acid was increased in the MWCNTs-exposed leaves to 50 and 1000 mg L-1, nearly four times relative to the control. Unlike with other examined enzymes, a positive correlation was deduced between the activity and gene expression patterns of the rosmarinic acid synthase with the rosmarinic acid accumulation in the treatments. Overall, MWCNTs at the low concentrations could promote the production of the pharmaceutical metabolites by the changes in the ROS generation. However, at the higher concentrations, MWCNTs were toxic and induced the oxidative damages in S. verticillata.
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Affiliation(s)
- Nosrat Rahmani
- Department of Biology, Faculty of Basic Sciences, Shahed University, Tehran, Iran
| | - Tayebeh Radjabian
- Department of Biology, Faculty of Basic Sciences, Shahed University, Tehran, Iran.
| | - Bahram Mohammad Soltani
- Department of Molecular Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
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