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Hassan AHA, Abdi I, Alsherif EA, Aloufi AS, Korany SM, Mohamed MYA, Aldilamif M, Selim S, Hamed SM. Species-specific ecotoxicity of platinum nanoparticles to two cyanobacteria. MARINE POLLUTION BULLETIN 2024; 209:117054. [PMID: 39393227 DOI: 10.1016/j.marpolbul.2024.117054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 08/27/2024] [Accepted: 09/24/2024] [Indexed: 10/13/2024]
Abstract
Platinum nanoparticles (PtNPs) are one of the widely used NPs, which contribute to potential risks to the aquatic ecosystem. However, PtNPs toxicity in phytoplankton remains inadequately understood, with significant gaps in knowledge regarding their biochemical bases and species-specific responses. Herein, we investigated the impact of PtNPs on two cyanobacterial species (Anabaena laxa and Nostoc muscorum) to explore the harmful pathways triggered by PtNPs in cyanobacteria, which may help in selecting appropriate biomarkers for PtNPs pollution in aquatic environments. We studied the effect of PtNPs on growth, oxidative stress markers, and antioxidant defense systems of the two species. The obtained results showed that PtNPs reduced the level of chlorophyll. Furthermore, they induced dose-dependent oxidative stress to the two species, expressed by significant increases in H2O2, malondialdehyde (MDA), and protein oxidation (p < 0.05). Stress-induced oxidative damages were more pronounced in N. muscorum, yet the two cyanobacterial species showed higher levels (p < 0.05) of antioxidant metabolites and antioxidant enzymes to combat oxidative stress. Compared to N. muscorum, A. laxa invested more in the induction of antioxidant metabolites including FRAP, polyphenols, flavonoids, and glutathione (GSH), as well as in antioxidant enzymes such as POX, CAT, GR, and GPX. Overall, A. laxa species could be exploited as efficient biomarkers for monitoring PtNPs-induced ecotoxicology. Further investigation of bio-absorption and uptake of PtNPs by microalgae is recommended for developing algae-based bioremediation technologies.
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Affiliation(s)
- Abdelrahim H A Hassan
- School of Biotechnology, Nile University, Giza 12588, Egypt; Department of Food Safety and Technology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Insaf Abdi
- Department of Basic Sciences, Deanship of Preparatory Year and Supporting Studies, Imam Abdulrahman Bin Faisal University, P.O. Box 4030, Jubail 35816, Saudi Arabia
| | - Emad A Alsherif
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62521, Egypt
| | - Abeer S Aloufi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Shereen Magdy Korany
- Botany and Microbiology Department, Faculty of Science, Helwan University, Cairo 11795, Egypt.
| | - Marwa Yousry A Mohamed
- Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box 90950, Riyadh 11623, Saudi Arabia
| | - Mohammad Aldilamif
- Biology Department, College of Science, King Abdelaziz University, Jeddah, Saudi Arabia
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 72388, Saudi Arabia
| | - Seham M Hamed
- Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box 90950, Riyadh 11623, Saudi Arabia; Soil Microbiology Department, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, P.O. 175, El-Orman, Egypt.
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2
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Yang X, Wang Z, Xu J, Zhang C, Gao P, Zhu L. Effects of dissolved organic matter on the environmental behavior and toxicity of metal nanomaterials: A review. CHEMOSPHERE 2024; 358:142208. [PMID: 38704042 DOI: 10.1016/j.chemosphere.2024.142208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/28/2024] [Accepted: 04/29/2024] [Indexed: 05/06/2024]
Abstract
Metal nanomaterials (MNMs) have been released into the environment during their usage in various products, and their environmental behaviors directly impact their toxicity. Numerous environmental factors potentially affect the behaviors and toxicity of MNMs with dissolved organic matter (DOM) playing the most essential role. Abundant facts showing contradictory results about the effects of DOM on MNMs, herein the occurrence of DOM on the environmental process change of MNMs such as dissolution, dispersion, aggregation, and surface transformation were summarized. We also reviewed the effects of MNMs on organisms and their mechanisms in the environment such as acute toxicity, oxidative stress, oxidative damage, growth inhibition, photosynthesis, reproductive toxicity, and malformation. The presence of DOM had the potential to reduce or enhance the toxicity of MNMs by altering the reactive oxygen species (ROS) generation, dissolution, stability, and electrostatic repulsion of MNMs. Furthermore, we summarized the factors that affected different toxicity including specific organisms, DOM concentration, DOM types, light conditions, detection time, and production methods of MNMs. However, the more detailed mechanism of interaction between DOM and MNMs needs further investigation.
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Affiliation(s)
- Xiaoqing Yang
- School of Environment & Ecology, Jiangnan University, Wuxi 214122, China
| | - Zhangjia Wang
- School of Environment & Ecology, Jiangnan University, Wuxi 214122, China
| | - Jiake Xu
- School of Environment & Ecology, Jiangnan University, Wuxi 214122, China
| | - Cheng Zhang
- School of Environment & Ecology, Jiangnan University, Wuxi 214122, China.
| | - Peng Gao
- Department of Environmental and Occupational Health, and Department of Civil and Environmental Engineering, University of Pittsburgh, Pittsburgh, PA, 15261, United States
| | - Lusheng Zhu
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, China
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3
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Narwal N, Katyal D, Kataria N, Rose PK, Warkar SG, Pugazhendhi A, Ghotekar S, Khoo KS. Emerging micropollutants in aquatic ecosystems and nanotechnology-based removal alternatives: A review. CHEMOSPHERE 2023; 341:139945. [PMID: 37648158 DOI: 10.1016/j.chemosphere.2023.139945] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 08/16/2023] [Accepted: 08/22/2023] [Indexed: 09/01/2023]
Abstract
There is a significant concern about the accessibility of uncontaminated and safe drinking water, a fundamental necessity for human beings. This concern is attributed to the toxic micropollutants from several emission sources, including industrial toxins, agricultural runoff, wastewater discharges, sewer overflows, landfills, algal blooms and microbiota. Emerging micropollutants (EMs) encompass a broad spectrum of compounds, including pharmaceutically active chemicals, personal care products, pesticides, industrial chemicals, steroid hormones, toxic nanomaterials, microplastics, heavy metals, and microorganisms. The pervasive and enduring nature of EMs has resulted in a detrimental impact on global urban water systems. Of late, these contaminants are receiving more attention due to their inherent potential to generate environmental toxicity and adverse health effects on humans and aquatic life. Although little progress has been made in discovering removal methodologies for EMs, a basic categorization procedure is required to identify and restrict the EMs to tackle the problem of these emerging contaminants. The present review paper provides a crude classification of EMs and their associated negative impact on aquatic life. Furthermore, it delves into various nanotechnology-based approaches as effective solutions to address the challenge of removing EMs from water, thereby ensuring potable drinking water. To conclude, this review paper addresses the challenges associated with the commercialization of nanomaterial, such as toxicity, high cost, inadequate government policies, and incompatibility with the present water purification system and recommends crucial directions for further research that should be pursued.
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Affiliation(s)
- Nishita Narwal
- University School of Environment Management, Guru Gobind Singh Indraprastha University, Sector 16-C, Dwarka, 110078, New Delhi, India
| | - Deeksha Katyal
- University School of Environment Management, Guru Gobind Singh Indraprastha University, Sector 16-C, Dwarka, 110078, New Delhi, India.
| | - Navish Kataria
- Department of Environmental Sciences, J.C. Bose University of Science and Technology, YMCA, Faridabad, 121006, Haryana, India.
| | - Pawan Kumar Rose
- Department of Energy and Environmental Sciences, Chaudhary Devi Lal University, Sirsa, 125055, Haryana, India
| | - Sudhir Gopalrao Warkar
- Department of Applied Chemistry, Delhi Technological University, Shahbad Daulatpur Village, Rohini, 110042, New Delhi, India
| | - Arivalagan Pugazhendhi
- Emerging Materials for Energy and Environmental Applications Research Group, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Viet Nam
| | - Suresh Ghotekar
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, 603103, Tamil Nadu, India
| | - Kuan Shiong Khoo
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan.
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4
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Yu L, Wang Z, Wang DG. Factors affecting the toxicity and oxidative stress of layered double hydroxide-based nanomaterials in freshwater algae. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:63109-63120. [PMID: 36959400 DOI: 10.1007/s11356-023-26522-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 03/14/2023] [Indexed: 05/10/2023]
Abstract
Layered double hydroxide (LDH) nanomaterials are utilized extensively in numerous fields because of their distinctive structural properties. It is critical to understand the environmental behavior and toxicological effects of LDHs to address potential concerns caused by their release into the environment. In this work, the toxicological effects of two typical LDHs (Mg-Al-LDH and Zn-Al-LDH) on freshwater green algae (Scenedesmus obliquus) and the main affecting factors were examined. The Zn-Al-LDH exhibited a stronger growth inhibition toxicity than the Mg-Al-LDH in terms of median effect concentration. This toxicity difference was connected to the stability of particle dispersion in water and the metallic composition of LDHs. The contribution of the dissolved metal ions to the overall toxicity of the LDHs was lower than that of their particulate forms. Moreover, the joint toxic action of different dissolved metal ions in each LDH belonged to additive effects. The Mg-Al-LDH induced a stronger oxidative stress effect in algal cells than the Zn-Al-LDH, and mitochondrion was the main site of LDH-induced production of reactive oxygen species. Scanning electron microscope observation indicated that both LDHs caused severe damage to the algal cell surface. At environmentally relevant concentrations, the LDHs exhibited joint toxic actions with two co-occurring contaminants (oxytetracycline and nano-titanium dioxide) on S. obliquus in an additive manner mainly. These findings emphasize the impacts of the intrinsic nature of LDHs, the aqueous stability of LDHs, and other environmental contaminants on their ecotoxicological effects.
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Affiliation(s)
- Le Yu
- School of Environmental Science and Engineering, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, 210044, People's Republic of China
| | - Zhuang Wang
- School of Environmental Science and Engineering, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, 210044, People's Republic of China.
| | - De-Gao Wang
- College of Environmental Sciences and Engineering, Dalian Maritime University, Dalian, 116026, People's Republic of China
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Ding T, Wei L, Hou Z, Lin S, Li J. Biological responses of alga Euglena gracilis to triclosan and galaxolide and the regulation of humic acid. CHEMOSPHERE 2022; 307:135667. [PMID: 35835236 DOI: 10.1016/j.chemosphere.2022.135667] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/06/2022] [Accepted: 07/08/2022] [Indexed: 06/15/2023]
Abstract
Although the toxicity of triclosan (TCS) and galaxolide (HHCB) in freshwater has been reported, little study is shed light on their molecular toxicity mechanism and the regulation of humic acid (HA). In this work, freshwater algae E. gracilis was selected to explore these processes, and the molecular toxicity mechanism was analyzed by metabolomics. TCS was more toxic to E. gracilis than HHCB at 1 d exposure with the EC50 value of 0.76 mg L-1, but HHCB showed a higher toxicity as the exposure time prolonged. HA could alleviate the toxicity of TCS and HHCB, mainly due to the inhibition of TCS uptake and oxidative stress, respectively. The perturbations on a number of antioxidant defense-related metabolites in response to TCS or HHCB also indicated oxidative stress was a main toxicity mechanism. However, the exposure to HHCB resulted in more pronounced perturbations in the purine metabolism than TCS, implying that HHCB may pose a genetic toxicity on algae. It may explain the higher toxicity of HHCB to algae as the exposure time increased. These findings provide a comprehensive understanding on the ecological risks of TCS or HHCB in natural waters.
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Affiliation(s)
- Tengda Ding
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China.
| | - Liyan Wei
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Zhangming Hou
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Shiqi Lin
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Juying Li
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China.
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6
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Zhang Y, Wang X, Li Y, Wang H, Shi Y, Li Y, Zhang Y. Improving nanoplastic removal by coagulation: Impact mechanism of particle size and water chemical conditions. JOURNAL OF HAZARDOUS MATERIALS 2022; 425:127962. [PMID: 34894513 DOI: 10.1016/j.jhazmat.2021.127962] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/20/2021] [Accepted: 11/29/2021] [Indexed: 06/14/2023]
Abstract
Plastic particles may bring potential threats to the ecosystem. Coagulation, as a widely used method to remove particles, has been rarely studied for plastic particles in the nanometer range. In this work, the coagulation removal of polystyrene nanoplastic particles (PSNPs, 50-1000 nm) was conducted in a model system containing coagulants aluminum chlorohydrate (PAC) and polyacrylamide (PAM). The optimal removal efficiency (98.5%) was observed in the coagulation process at pH= 8.0, 0.4 g·L-1 PAC and 20 mg·L-1 PAM. The inhibition impact of humic acid was also noticed, due to its competitive adsorption with PSNPs onto flocs. The interaction energies between PSNPs and PAC were calculated by the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory, which showed that electrical neutralization resulted in the difference of the remove efficiency in different sizes and coagulant concentrations. The formation of Al-O bond between PSNPs and PAC/PAM flocs promoted the removal of PSNPs. Excessive PAM (> 20 mg·L-1) increased clusters size and solution viscosity, which resulted in the settling of clusters being controlled by buoyancy and the reduced remove efficiency. The findings suggest that the chemical coagulation dominants the removal of NPs, and the coagulation efficiency can be optimized by choosing suitable coagulant and water chemical conditions.
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Affiliation(s)
- Yunhai Zhang
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Xinjie Wang
- Key Laboratory of Water and Sediment Sciences of Ministry of Education, State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Ying Li
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Hao Wang
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Yuexiao Shi
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Yang Li
- Key Laboratory of Water and Sediment Sciences of Ministry of Education, State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, People's Republic of China.
| | - Yongjun Zhang
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China.
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7
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Ma X, Chen X, Fan J, Wang Y, Zhang J. The response of three typical freshwater algae to acute acid stress in water. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2022; 57:102-110. [PMID: 35129075 DOI: 10.1080/10934529.2022.2036070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 01/19/2022] [Accepted: 01/23/2022] [Indexed: 06/14/2023]
Abstract
The effect of acidic pH conditions on the physiological response of three typical freshwater algae, Chlorella vulgaris, Microcystis aeruginosa and Scenedesmus quadricauda, was investigated in this study. The results of the cultivation experiment indicated that the mortality of the three algae in the logarithmic growth phase increased with increasing exposure time and acidity under acute acidic conditions. The tolerance of S. quadricauda was stronger than that of the other two species under long-term (6 h) exposure to the same acidity; in contrast, C. vulgaris exhibited the greatest tolerance under short-term exposure conditions. The decrease in chlorophyll a (Chl a) content indicated that the photosynthesis of algae was inhibited under acid stress and that the algae could not continue to grow normally. This was consistent with the changes in lipid peroxidation and antioxidant enzyme activity, which were reflected by the malondialdehyde (MDA) content and superoxide dismutase (SOD) activity under acid stress, respectively. The results of this study demonstrated that when exposed to acute acidic conditions, the tolerance of three typical freshwater algae to acidity was significantly different. These findings provide valuable information for poorly mixed acidification operations designed to adjust the pH in lakes, reservoirs, or intake pipes of purification plants.
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Affiliation(s)
- Xing Ma
- Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, China
| | - Xuan Chen
- Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, China
| | - Jiangtao Fan
- Yan'an Water Environmental Protection Group Yanhe Water Supply Co. Lit, Yan'an, China
| | - Yunzhong Wang
- Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, China
| | - Jianfeng Zhang
- Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an, China
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8
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Zheng X, Xu Z, Zhao D, Luo Y, Lai C, Huang B, Pan X. Double-dose responses of Scenedesmus capricornus microalgae exposed to humic acid. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150547. [PMID: 34582877 DOI: 10.1016/j.scitotenv.2021.150547] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 09/16/2021] [Accepted: 09/19/2021] [Indexed: 06/13/2023]
Abstract
Dissolved organic matter (DOM) has been found to attenuate the ecotoxicity of various environmental pollutants, but research on its own toxic effects in aquatic ecosystems has been very limited. Herein, the toxic effects of humic acid (HA), a represent DOM typically found in natural waters, on the freshwater alga Scenedesmus capricornus were investigated. As result, HA exerted a double-dose effect on the growth of Scenedesmus capricornus. At HA concentrations below 2.0 mgC/L, the growth of Scenedesmus capricornus was slightly promoted, as was the synthesis of chlorophyll and macromolecules in the algae. Moreover, S. capricornus can maintain its growth by secreting fulvic acid as a nutrient carbon source. However, the growth of Scenedesmus capricornus was significantly inhibited when HA was beyond 2.0 mgC/L. The main mechanisms of humic acid's toxicity were membrane damage and oxidative stress. Particularly, when the oxidative stress exceeds the algae's carrying capacity, the synthesis of EPS is greatly inhibited and HA damage results. Taken together, DOM may have both positive and negative effects on aquatic ecosystems.
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Affiliation(s)
- Xianyao Zheng
- Faculty of Environmental Science & Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Zhixiang Xu
- Faculty of Environmental Science & Engineering, Kunming University of Science and Technology, Kunming 650500, PR China.
| | - Dimeng Zhao
- Faculty of Environmental Science & Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Yu Luo
- Faculty of Environmental Science & Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Chaochao Lai
- Faculty of Environmental Science & Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Bin Huang
- Faculty of Environmental Science & Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Xuejun Pan
- Faculty of Environmental Science & Engineering, Kunming University of Science and Technology, Kunming 650500, PR China.
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Kumari M, Kumar A. Estimating combined health risks of nanomaterials and antibiotics from natural water: a proposed framework. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:13845-13856. [PMID: 34596816 DOI: 10.1007/s11356-021-16795-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
Nanoparticles (NPs) are one of the major class of emerging contaminants identified in aquatic environment. There is a probability that they can co-exist with other chemical pollutants like antibiotics (ABs) as ABs-NPs complexes in natural water systems. If these complexes are taken up via inadvertent ingestion of contaminated water, it might show detrimental effects on human health. To address this challenging issue, this study developed a risk framework to assess the combined exposure of ABs and NPs in natural waters for the first time. The six-step framework was applied to a hypothetical exposure of NPs (copper oxide, CuO; zinc oxide, ZnO; iron oxide, Fe3O4; and titanium oxide, TiO2) and ABs (ciprofloxacin, CIP; ofloxacin, OFX; norfloxacin, NOR; and levofloxacin, LEVO) to estimate human health risks for two different exposure scenarios. Risk estimation was also conducted for the released fragments of ABs, NPs and metal ions in the human digestive system. Mixture toxicity risk assessment was conducted for three different combinations: (i) ABs and metal ions, (ii) ABs and NPs, and (iii) NPs and metals ions. Although the expected risk values were observed to be less than 1 (both hazard quotients and hazard interactions less than 1) for all the conditions and assumptions made, still a thorough monitoring and analysis of the studied contaminants in water is required to protect humans from their adverse effects, if any. Maximum allowable concentrations (Cmax) at which no risk can occur to humans was found to be (maximum values): ABs (233.8 µg/L, NOR); metal ions (1.02 × 109 mg/L, Ti2+ ions), and NPs (6.68 × 105 mg/L, TiO2), respectively.
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Affiliation(s)
- Minashree Kumari
- Environment Engineering Section, Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, Delhi, 110016, India.
| | - Arun Kumar
- Environment Engineering Section, Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, Delhi, 110016, India
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Nanja AF, Focke WW, Musee N. Aggregation and dissolution of aluminium oxide and copper oxide nanoparticles in natural aqueous matrixes. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2952-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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Nogueira DJ, Vaz VP, Neto OS, Silva MLND, Simioni C, Ouriques LC, Vicentini DS, Matias WG. Crystalline phase-dependent toxicity of aluminum oxide nanoparticles toward Daphnia magna and ecological risk assessment. ENVIRONMENTAL RESEARCH 2020; 182:108987. [PMID: 31812936 DOI: 10.1016/j.envres.2019.108987] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 11/29/2019] [Accepted: 11/29/2019] [Indexed: 05/23/2023]
Abstract
Aluminum oxide nanoparticles (Al2O3 NPs) can be found in different crystalline phases, and with the emergence of nanotechnology there has been a rapid increase in the demand for Al2O3 NPs in different engineering areas and for consumer products. However, a careful evaluation of the potential environmental and human health risks is required to assess the implications of the release of Al2O3 NPs into the environment. Thus, the objective of this study was to investigate the toxicity of two crystalline phases of Al2O3 NPs, alpha (α-Al2O3 NPs) and eta (η-Al2O3 NPs), toward Daphnia magna and evaluate the risk to the aquatic ecology of Al2O3 NPs with different crystalline phases, based on a probabilistic approach. Different techniques were used for the characterization of the Al2O3 NPs. The toxicity toward Daphnia magna was assessed based on multiple toxicological endpoints, and the probabilistic species sensitivity distribution (PSSD) was used to estimate the risk of Al2O3 NPs to the aquatic ecology. The results obtained verify the toxic potential of the NPs toward D. magna even in sublethal concentrations, with a more pronounced effect being observed for η-Al2O3 NPs. The toxicity is associated with an increase in the reactive oxygen species (ROS) content and deregulation of antioxidant enzymatic/non-enzymatic enzymes (CAT, SOD and GSH). In addition, changes in MDA levels were observed, indicating that D. magna was under oxidative stress. The most prominent chronic toxic effects were observed in the organisms exposed to η-Al2O3 NPs, since the lowest LOEC was 3.12 mg/L for all parameters, while for α-Al2O3 NPs the lowest LOEC was 6.25 mg/L for longevity, growth and reproduction. However, the risk assessment results indicate that, based on a probabilistic approach, Al2O3 NPs (alpha, gamma, delta, eta and theta) only a very limited risk to organisms in surface waters.
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Affiliation(s)
- Diego José Nogueira
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC, 88040-970, Brazil
| | - Vitor Pereira Vaz
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC, 88040-970, Brazil
| | - Oswaldo Savoldi Neto
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC, 88040-970, Brazil
| | - Marlon Luiz Neves da Silva
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC, 88040-970, Brazil
| | - Carmen Simioni
- Laboratory of Plant Cell Biology, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, Florianópolis, SC, 88049-900, Brazil
| | - Luciane Cristina Ouriques
- Laboratory of Plant Cell Biology, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, Florianópolis, SC, 88049-900, Brazil
| | - Denice Shulz Vicentini
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC, 88040-970, Brazil
| | - William Gerson Matias
- Laboratory of Environmental Toxicology, Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis, SC, 88040-970, Brazil.
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Zhang F, Wang Z, Wang S, Fang H, Wang D. Aquatic behavior and toxicity of polystyrene nanoplastic particles with different functional groups: Complex roles of pH, dissolved organic carbon and divalent cations. CHEMOSPHERE 2019; 228:195-203. [PMID: 31029965 DOI: 10.1016/j.chemosphere.2019.04.115] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 04/02/2019] [Accepted: 04/14/2019] [Indexed: 06/09/2023]
Abstract
Herein we systematically examined the roles of water chemistry (pH, dissolved organic carbon (DOC), and divalent cations) and particle surface functionality that control the aqueous stability, aggregation, and toxicity of engineered nanoplastic particles in simulated natural environmental conditions. Model polystyrene latex nanoparticles (PLNPs) with three different functional groups, namely unmodified (uPLNPs), amine-modified (aPLNPs), and carboxyl-modified (cPLNPs), were investigated. Results indicate that the presence of only DOC increased the surface charge and exhibited negligible effects on the size distribution of the PLNPs in aqueous suspensions. The presence of the divalent cations (Ca2+ and Mg2+) was observed to decrease the surface charge and increase the size of the PLNPs. The coexistence of DOC and the divalent cations enhanced the extent of aggregation of the PLNPs in the water columns. The surface modification and pH were sensitive factors influencing the stability of PLNPs during long-term suspension when DOC and the divalent cations coexisted. Direct visual further testified the conclusions on the combined effects of solution and surface chemistry parameters. Furthermore, in situ transmission electron microscope observations revealed that the enhancement of PLNP aggregation in the presence of DOC and the divalent cation was caused by bridge formation. Toxicity test indicated the PLNPs exhibited acute toxicity and physical damage to Daphnia magna. The more complex the solution conditions, the more toxicity the aPLNPs and cPLNPs. Analysis of mode of toxic action implied that the PLNPs mainly caused the accumulation of oxidative damage to the gut of D. magna.
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Affiliation(s)
- Fan Zhang
- School of Environmental Science and Engineering, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Zhuang Wang
- School of Environmental Science and Engineering, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
| | - Se Wang
- School of Environmental Science and Engineering, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Hao Fang
- School of Environmental Science and Engineering, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Degao Wang
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China
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Dissolved Organic Matter Modulates Algal Oxidative Stress and Membrane System Responses to Binary Mixtures of Nano-Metal-Oxides (nCeO 2, nMgO and nFe 3O 4) and Sulfadiazine. NANOMATERIALS 2019; 9:nano9050712. [PMID: 31067831 PMCID: PMC6566580 DOI: 10.3390/nano9050712] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/24/2019] [Accepted: 04/29/2019] [Indexed: 12/15/2022]
Abstract
Joint biomarker responses, oxidative stress and membrane systems, were determined for nano-metal-oxides (nMeO, i.e., nCeO2, nMgO, and nFe3O4) and sulfadiazine (SDZ) exposed at relevant low concentrations to two freshwater microalgae Scenedesmus obliquus and Chlorella pyrenoidosa. The impacts of dissolved organic matter (DOM) on the joint biomarker responses were also investigated. Results indicated that the presence of SDZ significantly decreased the level of intercellular reactive oxygen species (ROS) in the algal cells exposed to each nMeO. Reduction of cell membrane permeability (CMP) and mitochondrial membrane potential (MMP) in the algal cells was observed when the algae were exposed to the mixture of SDZ and the nMeO. The degree of reduction of the ROS level, CMP, and MMP significantly went down with the addition of DOM to a certain extent. Changes in cellular oxidative stress and membrane function depended on the types of both nMeO and algal species. This contribution provides an insight into the hazard assessment of a mixture consisting of emerging contaminants and DOM, as they can coexist in the aquatic environment.
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Abstract
Nanomaterials (NMs) find widespread use in different industries that range from agriculture, food, medicine, pharmaceuticals, and electronics to cosmetics. It is the exceptional properties of these materials at the nanoscale, which make them successful as growth promoters, drug carriers, catalysts, filters and fillers, but a price must be paid via the potential toxity of these materials. The harmful effects of nanoparticles (NPs) to environment, human and animal health needs to be investigated and critically examined, to find appropriate solutions and lower the risks involved in the manufacture and use of these exotic materials.The vast number and complex interaction of NM/NPs with different biological systems implies that there is no universal toxicity mechanism or assessment method. The various challenges need to be overcome and a number of research studies have been conducted during the past decade on different NMs to explore the possible mechanisms of uptake, concentrations/dosage and toxicity levels. This review article examines critically the recent reports in this field to summarize and present opportunities for safer design using case studies from published literature.
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