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Yu F, Pei Y, Zhang X, Wu X, Zhang G, Ma J. Occurrence and distribution characteristics of aged microplastics in the surface water, sediment, and crabs of the aquaculture pond in the Yangtze River Delta of China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 871:162039. [PMID: 36746285 DOI: 10.1016/j.scitotenv.2023.162039] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/30/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
The artificial breeding of freshwater crabs in China has become the main source, accounting for 45.69 % of the total output in 2020. However, microplastics widely exist in ponds due to the addition of meals, and the aging and breakage of plastic tools, and people know little about the occurrence of microplastics in the environment and the tissues of crabs during the cultivation of crabs in ponds. In this study, the abundance and characteristics of microplastics in ponds and crabs were studied finely, and the types of microplastics produced by meals and tools and the aging degree of microplastics in different media were studied in a typical aquaculture experimental base in the Yangtze Estuary of China. After we digested all the samples, there were microplastics in the water, sediment, and inedible part of crabs and crab meals, mainly in fiber shape, with a particle size of 100~300μm, and they have a certain degree of aging. The abundance of microplastics in surface water ranges from 4.4 to 10.8 items/L, and that in sediment ranges from 28.6 to 54.3 items/100 g·dry weight sediments. The average abundance of microplastics in crabs was 23.9 ± 15.9 items/individual. The content of microplastics in crabs' intestinal tissue was the highest, followed by gills and hepatopancreas. At the same time, the microplastics found in crabs were positively correlated with crab body weight and negatively correlated with hepatopancreas index. The results show that in the process of artificial breeding pond feeding, microplastics will be released from the process of meals dissolving in water, and fall off due to wear and tear during the use of tools. Microplastics found in the water, sediments and the tissues of crabs were all aged. Humans have a risk of ingesting microplastics when they eat the tissues of nonedible parts of crabs.
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Affiliation(s)
- Fei Yu
- College of Marine Ecology and Environment, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China
| | - Yizhi Pei
- College of Marine Ecology and Environment, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China
| | - Xiaochen Zhang
- College of Marine Ecology and Environment, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China
| | - Xugan Wu
- College of Fisheries and Life Science, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China
| | - Guangbao Zhang
- College of Fisheries and Life Science, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China
| | - Jie Ma
- Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China.
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Qin Q, Yang Y, Yang C, Zhang L, Yin H, Yu F, Ma J. Degradation and adsorption behavior of biodegradable plastic PLA under conventional weathering conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 842:156775. [PMID: 35724797 DOI: 10.1016/j.scitotenv.2022.156775] [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: 04/30/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 05/06/2023]
Abstract
With the increasing pollution of plastics and the widespread use of polylactic acid (PLA), its weathering process in the natural environment needs to be studied. Hence, we investigated the characteristics of PLA under conventional weathering conditions and the adsorption behavior between PLA and tetracycline (TC). The results showed cracks and holes in the weathered PLA surface, an increase in oxygen-containing functional groups, and a 77.94 % decrease in contact angle, causing more amount of TC to be adsorbed. The maximum adsorption capacity of PLA for TC is approximately 3.5 times higher than before weathering due to multilayer physical adsorption. Nevertheless, the surface of the microplastics weathered by seawater did not change significantly. This work elucidates the weathering mechanism of biodegradable microplastics under abiotic conditions, thus correctly assessing the difference in natural and conventional degradability of biodegradable plastics.
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Affiliation(s)
- Qiyu Qin
- College of Marine Ecology and Environment, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China
| | - Yidi Yang
- College of Marine Ecology and Environment, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China
| | - Changfu Yang
- Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, School of Environmental Science & Engineering, Shanghai Jiao Tong, Shanghai 200240, PR China
| | - Leilihe Zhang
- College of Marine Ecology and Environment, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China
| | - Haoyuan Yin
- College of Marine Ecology and Environment, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China
| | - Fei Yu
- College of Marine Ecology and Environment, Shanghai Ocean University, No 999, Huchenghuan Road, Shanghai 201306, PR China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, School of Environmental Science & Engineering, Shanghai Jiao Tong, Shanghai 200240, PR China.
| | - Jie Ma
- Research Center for Environmental Functional Materials, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
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Li J, Li J, Liu H, Zhang L, Lu Y, Zhou Z. Structural landscape investigations on bendable plastic crystals of isonicotinamide polymorphs. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.03.090] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Guo X, Xiao L, Yan P, Li M, Zhu M, Liu J. Synergistic tuning of electrochemical surface area and surface Co3+ by oxygen plasma enhances the capacities of Co3O4 lithium–oxygen battery cathodes. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.03.066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Xu C, Yang Y, Wang H, Xu B, Li Y, Tan R, Duan X, Wu D, Zhuo M, Ma J. Electrolytes for Lithium- and Sodium-Metal Batteries. Chem Asian J 2020; 15:3584-3598. [PMID: 32856415 DOI: 10.1002/asia.202000851] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/26/2020] [Indexed: 11/08/2022]
Abstract
High-energy-density batteries have attracted significant attention due to the huge demand in electric transportation in future. Metal-based batteries, especially lithium metal batteries (LMBs) and sodium metal batteries (SMBs), have been hot research topics nowadays. The uncontrolled growth of metal dendrites has retarded the development of LMBs and SMBs. Various electrolytes have been explored to meet the demand of high-performance metal-based batteries, such as additives-contained electrolytes, polymer electrolytes, and solid-state electrolytes. To guide the development of electrolytes in LMBs and SMBs, we organize this roadmap to give out the status of present research and future challenges in this field. We also hope that the readers can get the knowledge and ideas from this roadmap.
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Affiliation(s)
- Chenxuan Xu
- School of Physics and Electronics, Hunan University, Changsha 410082, Hunan, P. R. China
| | - Yulu Yang
- School of Physics and Electronics, Hunan University, Changsha 410082, Hunan, P. R. China
| | - Huaping Wang
- School of Physics and Electronics, Hunan University, Changsha 410082, Hunan, P. R. China.,Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, Zhengzhou University, Zhengzhou, 450002, Henan, P. R. China
| | - Biyi Xu
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Yutao Li
- Materials Science and Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, TX 78712, USA
| | - Rou Tan
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, P. R. China) W
| | - Xiaochuan Duan
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, P. R. China) W
| | - Daxiong Wu
- School of Physics and Electronics, Hunan University, Changsha 410082, Hunan, P. R. China
| | - Ming Zhuo
- College of Intelligence Science, National University of Defense Technology, Changsha, 410003, Hunan, P. R. China
| | - Jianmin Ma
- School of Physics and Electronics, Hunan University, Changsha 410082, Hunan, P. R. China
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