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A novel electrochemical sensing platform based on double-active-center polyimide covalent organic frameworks for sensitive analysis of levofloxacin
Anal Bioanal Chem. 2023 Sep 21. doi: 10.1007/s00216-023-04955-6. Online ahead of print.ABSTRACTThe development of a simple and sensitive electrochemical sensing platform for levofloxacin (LVF) analysis is of great significance to human health. In this work, a covalent organic framework (TP-COF) was in situ grown on the surface of Sn-MoC nanospheres with nanoflower-like morphology through a one-pot method to obtain the TP-COF@Sn-MoC composite. The prepared composite was used to modify a glassy carbon electrode (GCE) to realize the sensitive detection of levofloxacin. TP-COF was formed by polycondensation of 2,4,6-tris(4-ami...
Source: Analytical and Bioanalytical Chemistry - September 21, 2023 Category: Chemistry Authors: Zongyan Lu Hao Guo Mingyue Wang Zeyun Yang Xiaoqin Wei Yinsheng Liu Yingfei Hui Zhiguo Yu Wu Yang Source Type: research
Investigation on Methylene Blue Dye Adsorption in Aqueous by the Modified Mussel Shells: Optimization, Kinetic, Thermodynamic and Equilibrium Studies
This study assessed the methylene blue adsorption using natural and modified mussel shell powders in the aqueous solution. The mussel shell samples were processed in a NaClO solution then modified with sodium dodecyl sulfate and ethylenediaminetetraacetic acid. The characteristics of mussel shell samples before and after modification were demonstrated using infared spectroscopy, thermogravimetric analysis, scanning electron microscopy, nitrogen adsorption/desorption, energy dispersive X-ray, water contact angle, and dynamic light scattering methods. Some factors such as the pH of the medium, adsorption temperature, and ads...
Source: Bulletin of Environmental Contamination and Toxicology - September 21, 2023 Category: Environmental Health Authors: Hoang Nghia Trinh Thuy Chinh Nguyen Do Mai Trang Tran Thi Cam Quyen Ngo Thi Lan Phung Tien Dung Nguyen Hoang Thai Source Type: research
Construction, evaluation, and AOP framework-based application of the EpPRS as a genetic surrogate for assessing environmental pollutants
CONCLUSIONS: EpPRSs can serve as a proxy for assessing pollutant internal exposure. The application of the EpPRS to disease risk assessment can reveal the toxic pathway and mode of action linking exposure and disease in detail, providing a basis for the development of environmental pollutant control strategies.PMID:37734146 | DOI:10.1016/j.envint.2023.108202
Source: Environment International - September 21, 2023 Category: Environmental Health Authors: Silu Chen Junyi Xin Zhutao Ding Lingyan Zhao Shuai Ben Rui Zheng Shuwei Li Huiqin Li Wei Shao Yifei Cheng Zhengdong Zhang Mulong Du Meilin Wang Source Type: research
Applications of covalent organic frameworks for the elimination of dyes from wastewater: A state-of-the-arts review
Chemosphere. 2023 Sep 19:140223. doi: 10.1016/j.chemosphere.2023.140223. Online ahead of print.ABSTRACTCovalent organic frameworks (COFs) are class of porous coordination polymers made up of organic building blocks joined together by covalent bonding through thermodynamic and controlled reversible polymerization reactions. This review discussed versatile applications of COFs for remediation of wastewater containing dyes, emphasizing the advantages of both pristine and modified materials in adsorption, membrane separation, and advanced oxidations processes. The excellent performance of COFs towards adsorption and membrane f...
Source: Chemosphere - September 21, 2023 Category: Chemistry Authors: Zakariyya Uba Zango Ayed M Binzowaimil Osamah A Aldaghri Mohamed Hassan Eisa Abdurrahman Garba Naser M Ahmed Jun Wei Lim Hui-Suan Ng Hanita Daud Khairulazhar Jumbri Kuan Shiong Khoo Khalid Hassan Ibnaouf Source Type: research
Contribution of free hydroxyl radical to the formation of micro(nano)plastics and release of additives during polyethylene degradation in water
Environ Pollut. 2023 Sep 19:122590. doi: 10.1016/j.envpol.2023.122590. Online ahead of print.ABSTRACTThe omnipresence of secondary microplastics (MPs) in aquatic ecosystems has become an increasingly alarming public health concern. Hydrogen peroxide (H2O2) is an important oxidant in nature and the most stable reactive oxygen species occurred in natural water. In order to explore the contribution of free ˙OH generated from H2O2-driven Fenton-like reactions on the degradation of polyethylene (PE) and generation of micro- and nano-scale plastics in water, a batch experiment was conducted over a period of 620 days in water tr...
Source: Environmental Pollution - September 21, 2023 Category: Environmental Health Authors: Yu Tang Kaiqing Fan Indika Herath Williamson Gustave Chuxia Lin Junhao Qin Rongliang Qiu Source Type: research
Organic or Inorganic Zinc for Laying Hens? A Systematic Review and Meta-analysis of the Effects of Zinc Sources on Laying Performance, Egg Quality, and Zinc Excretion
Biol Trace Elem Res. 2023 Sep 21. doi: 10.1007/s12011-023-03861-3. Online ahead of print.ABSTRACTThe higher availability of zinc (Zn) from organic than inorganic sources is already established, but more assertive and cost-friendly protocols on the total replacement of inorganic with organic Zn sources for laying hens still need to be developed. Because some discrepancy in the effects of this replacement in laying hen diets is noticeable in the literature, the objective of this meta-analysis was to properly quantify the effect size of total replacing inorganic Zn with organic Zn in the diet of laying hens on their laying pe...
Source: Biological Trace Element Research - September 21, 2023 Category: Biology Authors: Giovane Dias da Silva J éferson Maia Leony da Silva Costa Gabriella Ferreira de Oliveira Sa Maria Teresa Oliveira Gabino Mendes Natalia Ramos Batista Chaves Belchiolina Beatriz Fonseca Bruno Serpa Vieira Source Type: research
Performance of volatile fatty acids production from food waste at the presence of alkyl ethoxy polyglycosides and sodium dodecyl sulfate
This study investigated the performance of VFAs production from food waste at the presence of alkyl ethoxy polyglycosides (AEG) and sodium dodecyl sulfate (SDS). The highest yield of VFAs was obtained at 0.1 g AEG/g TS (14.53 g COD/L), which increased by 25.80% than the Blank. But inhibited phenomenon was observed at other reactors with relatively low yield and delayed fermentation time. The inhibition of lactate's production and bioconversion delayed the fermentation time, and SDS has changed the acidogenic fermentation type from lactate-butyrate fermentation to acetate fermentation. In addition, more organic matter disso...
Source: Chemosphere - September 21, 2023 Category: Chemistry Authors: Cui Quan Changxiang Chen Xinggang Li Ningbo Gao Source Type: research
Microplastics in wastewater treatment plants and their contributions to surface water and farmland pollution in China
This study examines the presence of MPs in sewage and sludge in Shenzhen WWTPs and estimates the annual mass loading of MPs from WWTPs to surface water and farmland soil in China. According to our results, for Shenzhen, the annual contribution of MPs from WWTPs (which was obtained by multiplying the annual treated sewage volume by the estimated MP density in the treated sewage) to surface water could be 70.6-302 tons. With a normalized extrapolation model of population density, the contribution of national urban WWTPs to MPs in surface water was estimated to be 734 -3.10 × 103 tons/year, of which 220-950 tons/year entered...
Source: Chemosphere - September 21, 2023 Category: Chemistry Authors: Shu-Yan Ren Qing Sun Shi-Yong Xia De Tong Hong-Gang Ni Source Type: research
Boron contamination and related health risk assessment in the soils collected from olive groves in İzmir province, Türkiye
In this study, it was aimed to determine the B pollution degree of the soils taken from the olive groves of İzmir province, which is approximately 180 km away from the B deposits in the Bigadiç district. In addition, the factors affecting boron adsorption and availability were discussed and the ecological and health risks of boron were evaluated. For this, soil samples were collected at depths of 0-30 cm from 118 olive groves and their B, Al, Fe, pH and organic matter contents were determined. The mean B content (47.08 mg/kg) of the study area was comparable to world-soil average B concentration (42 mg/kg). Also, B had a...
Source: Chemosphere - September 21, 2023 Category: Chemistry Authors: Memet Varol Ai şe Deliboran Halil Aytop Özgür Ateş Source Type: research
Singlet oxygen in the removal of organic pollutants: An updated review on the degradation pathways based on mass spectrometry and DFT calculations
Chemosphere. 2023 Sep 19:140203. doi: 10.1016/j.chemosphere.2023.140203. Online ahead of print.ABSTRACTThe degradation of pollutants by a non-radical pathway involving singlet oxygen (1O2) is highly relevant in advanced oxidation processes. Photosensitizers, modified photocatalysts, and activated persulfates can generate highly selective 1O2 in the medium. The selective reaction of 1O2 with organic pollutants results in the evolution of different intermediate products. While these products can be identified using mass spectrometry (MS) techniques, predicting a proper degradation mechanism in a 1O2-based process is still ch...
Source: Chemosphere - September 21, 2023 Category: Chemistry Authors: Manoj P Rayaroth Usha K Aravind Grzegorz Boczkaj Charuvila T Aravindakumar Source Type: research
Bis-peri-dinaphtho-rylenes: Facile Synthesis via Radical-Mediated Coupling Reactions and their Distinctive Electronic Structure
This study introduces a novel synthetic approach for generating 1D extended PAHs and GNRs, along with their structure-dependent electronic properties.PMID:37735099 | DOI:10.1002/anie.202311928
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Tong Shen Ya Zou Xudong Hou Haipeng Wei Longbin Ren Liuying Jiao Jishan Wu Source Type: research
Development of a high-performance label-free electrochemical immunosensor for early cancer diagnosis using anti-CEA/Ag-MOF/GO/GCE nanocomposite
Environ Res. 2023 Sep 19:117178. doi: 10.1016/j.envres.2023.117178. Online ahead of print.ABSTRACTIn order to detect carcinoembryonic antigen (CEA) as a tumor marker in lung cancer for early cancer diagnosis, this study aimed to develop a label-free electrochemical immunosensor based on the immobilization of an Anti-CEA antibody on a metal-organic framework (MOF)-graphene oxide nanocomposite modified glassy carbon electrode (Anti-CEA/Ag-MOF/GO/GCE). Ag-MOF/GO nanocomposite was prepared on the GCE surface using the ultrasonic irradiation method, and Anti-CEA antibody was subsequently immobilized on the surface. Analysis of ...
Source: Environmental Research - September 21, 2023 Category: Environmental Health Authors: Peng Huang Lingzhang Meng Jun Pang Haiting Huang Jing Ma Linlin He Parnian Amani Source Type: research
Building Block-inspired Hybrid Perovskite Derivatives for Ferroelectric Channel Layers with Gate-Tunable Memory Behavior
Angew Chem Int Ed Engl. 2023 Sep 21:e202309416. doi: 10.1002/anie.202309416. Online ahead of print.ABSTRACTFerroelectric photovoltaics driven by spontaneous polarization (Ps) holds a promise for creating the next-generation optoelectronics, spintronics and non-volatile memories. However, photoactive ferroelectrics are quite scarce in single homogeneous phase, owing to the severe Ps fatigue caused by leakage current of photoexcited carriers. Here, through combining inorganic and organic components as building blocks, we constructed a series of ferroelectric semiconductors of 2D hybrid perovskites, (HA)2(MA)n-1PbnBr3n+1 (n =...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Haojie Xu Fapeng Sun Wuqian Guo Shiguo Han Yi Liu Qingshun Fan Liwei Tang Wei Liu Junhua Luo Zhihua Sun Source Type: research
Organocatalytic C-H Functionalization of Simple Alkanes
Angew Chem Int Ed Engl. 2023 Sep 20:e202310072. doi: 10.1002/anie.202310072. Online ahead of print.ABSTRACTThe direct functionalization of inert C(sp3)-H bonds to form carbon-carbon and carbon-heteroatom bonds offers vast potential for chemical synthesis and therefore receives intense attention. At present, most successes come from strategies using metal catalysts/reagents or photo/electrochemical processes. The use of organocatalysis for this purpose remains very limited or even unexplored especially when dealing with challenging C-H bonds such as those from simple alkanes. Here we disclose the first organocatalytic direc...
Source: Angewandte Chemie - September 21, 2023 Category: Chemistry Authors: Fen Su Fengfei Lu Kun Tang Xiaokang Lv Zhongfu Luo Fengrui Che Hongyan Long Xingxing Wu Yonggui Robin Chi Source Type: research
Stakes of neuromorphic foveation: a promising future for embedded event cameras
Biol Cybern. 2023 Sep 21. doi: 10.1007/s00422-023-00974-9. Online ahead of print.ABSTRACTFoveation can be defined as the organic action of directing the gaze towards a visual region of interest to acquire relevant information selectively. With the recent advent of event cameras, we believe that taking advantage of this visual neuroscience mechanism would greatly improve the efficiency of event data processing. Indeed, applying foveation to event data would allow to comprehend the visual scene while significantly reducing the amount of raw data to handle. In this respect, we demonstrate the stakes of neuromorphic foveation ...
Source: Biological Cybernetics - September 21, 2023 Category: Science Authors: Am élie Gruel Dalia Hareb Antoine Grimaldi Jean Martinet Laurent Perrinet Bernab é Linares-Barranco Teresa Serrano-Gotarredona Source Type: research
