Current Analytical Chemistry - Online First
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81 - 83 of 83 results
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Fabrication of Surface-Enhanced Raman Scattering (SERS) Substrates in Analytical Science by Natural-inspired Materials: A Review
Authors: Kai Li, Lan Zhang, Le Wang, Liqiang Guo and Yajing LiAvailable online: 09 October 2024More LessSurface-Enhanced Raman Scattering (SERS) spectroscopy, as a novel rapid detection technology, offers molecular fingerprinting capabilities that achieve trace-level detection. The key to optimizing SERS sensitivity and reliability lies in the precise control of the nanostructures of SERS substrates. Nature, through billions of years of evolution, has served as a masterful creator, developing organisms with remarkable abilities based on micro/nanostructures, such as the superhydrophobicity of lotus leaves and the strong adhesive forces of gecko feet. This review categorizes the recent developments in SERS substrates inspired by natural materials into three main types: plant-based, animal-based, and virus-based. Each category is explored in detail, describing how their unique nanoarchitectures inspire the development of highly sensitive SERS substrates, along with their fabrication methods and applications in analytical science. Additionally, the review identifies current challenges, such as the uniformity and scalability of naturally inspired SERS substrates and suggests future directions, including the integration of hybrid biomimetic structures and advanced manufacturing techniques. By fostering a deeper understanding of these nature-inspired materials, we aim to enhance the practical application of SERS in analytical science in the future.
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A Review of Analytical Methods for Microplastics in Soils
Authors: Yuting Liu and Jiafu LiAvailable online: 08 October 2024More LessMicroplastics (MPs), as an emerging environmental pollutant, pose a potential threat to ecosystems and human health, and the study of their analytical methods has become particularly important. In this paper, the current research progress of analytical methods for MPs in soil is reviewed. The sources, ecological impacts and possible health risks of MPs are introduced, and the urgency of accurate detection and quantitative analysis of MPs is emphasized. Subsequently, MPs’ analytical methods based on different principles, including visual analysis, chemical analysis, spectroscopic techniques, microscopic observation, and mass spectrometry, are systematically outlined in response to the wide range of sample sources and wide particle size distribution of MPs. For each method, the advantages, limitations and scope of application are highlighted and evaluated, and the directions and development trends for future improvement are proposed. The review of this paper is expected to promote the continuous improvement and innovation of MPs analytical methods and provide more effective technical support and scientific basis for solving the MPs’ pollution problems.
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Progress in the Development of Antifouling Electrochemical Biosensors
Authors: Liuxing Chen, Da Chen and Meiling LianAvailable online: 02 September 2024More LessElectrochemical biosensors a subclass of biosensors, consisting of a biosensing element and an electrochemical transducer, have been widely used in various fields due to their excellent performance and portable device. However, in complex actual samples, non-specific adsorption of proteins and solid particles, and adhesion of cells and bacteria will lead to problems such as reduced sensor sensitivity, prolonged response time, and expanded detection errors. Therefore, constructing antifouling sensing platforms to effectively resist the bioadhesion of non-targets is crucial for the performance of biosensors. This study first introduces the commonly used classifications of electrochemical biosensors and their main contaminants. It also provides a comprehensive overview of the construction methods and application research of electrochemical antifouling sensors using different strategies, including the construction of physical, chemical and biological modification interfaces. In addition, the research progress on antifouling and antibacterial dual-action coatings for electrochemical detection is also reviewed. Finally, the challenges and future development trends of various methods are summarized, providing clues for better practical applications of electrochemical biosensors.
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