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A Review on Thiazole Based Colorimetric and Fluorimetric Chemosensors for the Detection of Heavy Metal Ions. 基于噻唑的重金属离子检测比色和荧光化学传感器综述
IF 5.4 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2024-01-01 Epub Date: 2023-04-08 DOI: 10.1080/10408347.2023.2197073
Mohsen A M Alhamami, Jari S Algethami, Sikandar Khan

Thiazole and its derivatives play an important role in biological and non-biological fields due to several structural and electronic behaviors associated with it. Thiazole derivatives act as chemosensors because they formed metal complexes upon interacting with various heavy metal ions like Cd2+, Co2+, Cr3+, Fe3+, Ag+, Al3+, Cu2+, Pd2+, Hg2+, Ni2+, Ga3+, In3+, Sn4+, Pb2+, Zn2+ as well as other cations. These metal ions are of prime importance from the environmental point of view with high. This review article focuses on the thiazole-based colorimetric as well as fluorometric sensor for the recognition of different heavy metal cations in various specimens like agricultural, biological, and environmental. It also summarizes the binding stoichiometry, detection limit, pH, structure, and practical application of the reported thiazole-based chemosensors. Further, the sensing performances, have been discussed and compared with some reported organic sensors.

噻唑及其衍生物具有多种结构和电子行为,因此在生物和非生物领域发挥着重要作用。噻唑衍生物可作为化学传感器,因为它们在与各种重金属离子(如 Cd2+、Co2+、Cr3+、Fe3+、Ag+、Al3+、Cu2+、Pd2+、Hg2+、Ni2+、Ga3+、In3+、Sn4+、Pb2+、Zn2+ 以及其他阳离子)相互作用时会形成金属络合物。从环境角度来看,这些金属离子具有极高的重要性。这篇综述文章重点介绍了基于噻唑的比色法和荧光法传感器,用于识别农业、生物和环境等各种样本中的不同重金属阳离子。文章还总结了已报道的噻唑基化学传感器的结合化学计量、检测限、pH 值、结构和实际应用。此外,还讨论了传感性能,并与一些已报道的有机传感器进行了比较。
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引用次数: 0
Chromatographic Methods for Detection and Quantification of Pyrrolizidine Alkaloids in Flora, Herbal Medicines, and Food: An Overview. 检测和定量植物、草药和食品中吡咯里西啶生物碱的色谱法:概述。
IF 4.2 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2024-01-01 Epub Date: 2023-06-10 DOI: 10.1080/10408347.2023.2218476
Ana Catarina Sousa, Cláudia Ribeiro, Virgínia M F Gonçalves, Inês Pádua, Sandra Leal

Pyrrolizidine alkaloids (PAs) are natural toxins produced by some plants that gained special interest due to their potential hazardous effects in humans and animals. These substances have been found in wild flora, herbal medicines and food products raising health concerns. Recently, maximum concentration levels of PAs were established for some food products; however, maximum daily intake frequently surpasses the upper limit set by the competent authorities posing a health risk. Given the scarcity or absence of occurrence data on PAs in many products, there is an urgent need to measure their levels and establish safety intake levels. Analytical methods have been reported to detect and quantify PAs in different matrices. The commonly used chromatographic methodologies provides accurate and reliable results. Analytical methods include diverse steps as extraction and sample preparation procedures that are critical for sensitivity and selectivity of the analytical method. Great efforts have been directed toward optimization of extraction procedures, clean up and chromatographic conditions to improve recovery, reduce matrix effects, and achieve low limits of detection and quantification. Therefore, this paper aims to give a general overview about the occurrence of PAs in flora, herbal medicines, and foodstuff; and discuss the different chromatographic methodologies used for PAs analysis, namely extraction and sample preparation procedures and chromatographic conditions.

吡咯里西啶生物碱(PAs)是由某些植物产生的天然毒素,由于其对人类和动物的潜在危害而受到特别关注。在野生植物群、草药和食品中发现的这些物质引起了人们对健康的关注。最近,一些食品中 PAs 的最大浓度水平已经确定;然而,每日最大摄入量经常超过主管当局规定的上限,对健康构成威胁。鉴于许多产品中 PAs 的出现数据很少或根本没有,因此迫切需要测量 PAs 的含量并确定安全摄入量。据报道,已有分析方法可检测和量化不同基质中的 PAs。常用的色谱法可提供准确可靠的结果。分析方法包括提取和样品制备等不同步骤,这些步骤对分析方法的灵敏度和选择性至关重要。人们一直在努力优化提取程序、净化和色谱条件,以提高回收率,减少基质效应,实现低检测限和定量限。因此,本文旨在概述 PAs 在植物区系、中药材和食品中的存在情况,并讨论用于 PAs 分析的不同色谱方法,即提取和样品制备程序以及色谱条件。
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引用次数: 0
Multi-Attribute Method (MAM): An Emerging Analytical Workflow for Biopharmaceutical Characterization, Batch Release and cGMP Purity Testing at the Peptide and Intact Protein Level. 多属性方法 (MAM):多属性法 (MAM):用于肽和完整蛋白质水平的生物制药表征、批量释放和 cGMP 纯度测试的新兴分析工作流程。
IF 5.4 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2024-01-01 Epub Date: 2023-07-25 DOI: 10.1080/10408347.2023.2238058
Silvia Millán-Martín, Craig Jakes, Sara Carillo, Lizzie Gallagher, Kai Scheffler, Kelly Broster, Jonathan Bones

The rapid growth of biotherapeutic industry, with more and more complex molecules entering the market, forces the need for advanced analytical platforms that can quickly and accurately identify and quantify product quality attributes. Mass spectrometry has the potential to provide more detailed information about the quality attributes of complex products, and MS methods are more sensitive than UV methods for detection of impurities. The multi-attribute method (MAM), a liquid chromatography-mass spectrometry based analytical approach is an emerging platform which supports biotherapeutic characterization and cGMP testing. The main advantage lies in the ability to monitor multiple quality attributes in a single assay, both at the peptide and the intact level, facilitating streamlined biopharmaceutical production, from research and development to the QC environment. This review highlights the current landscape of the MAM approach with special attention given to increased analytical throughput, general requirements for QC in terms of instrumentation and software, regulatory requirements, and industry acceptance of the MAM platform.

随着生物治疗行业的快速发展,越来越多的复杂分子进入市场,这迫使人们需要能够快速、准确地识别和量化产品质量属性的先进分析平台。质谱法有可能提供有关复杂产品的质量属性的更详细信息,而且质谱法在检测杂质方面比紫外法更灵敏。多属性法(MAM)是一种基于液相色谱-质谱联用的分析方法,是支持生物治疗表征和 cGMP 检测的新兴平台。其主要优势在于能够在一次检测中监测多肽和完整水平的多种质量属性,从而促进从研发到质量控制环境的生物制药生产流程的简化。本综述重点介绍了 MAM 方法的现状,特别关注分析通量的提高、质量控制对仪器和软件的一般要求、监管要求以及业界对 MAM 平台的接受程度。
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引用次数: 0
Progress in the Development of Imidazopyridine-Based Fluorescent Probes for Diverse Applications. 用于多种应用的咪唑吡啶荧光探针的开发进展。
IF 4.2 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2024-01-01 Epub Date: 2022-12-23 DOI: 10.1080/10408347.2022.2158720
Preeti AshokKumar Chaudhran, Abha Sharma

Different classes of Imidazopyridine i.e., Imidazo[1,2-a]pyridine, Imidazo[1,5-a] pyridine, Imidazo[4,5-b]pyridine, have shown versatile applications in various fields. In this review, we have concisely presented the usefulness of the fluorescent property of imidazopyridine in different fields such as imaging tools, optoelectronics, metal ion detection, etc. Fluorescence mechanisms such as excited state intramolecular proton transfer, photoinduced electron transfer, fluorescence resonance energy transfer, intramolecular charge transfer, etc. are incorporated in the designed fluorophore to make it for fluorescent applications. It has been widely employed for metal ion detection, where selective metal ion detection is possible with triazole-attached imidazopyridine, β-carboline imidazopyridine hybrid, quinoline conjugated imidazopyridine, and many more. Also, other popular applications involve organic light emitting diodes and cell imaging. This review shed a light on recent development in this area especially focusing on the optical properties of the molecules with their usage which would be helpful in designing application-based new imidazopyridine derivatives.

不同类别的咪唑吡啶(即咪唑并[1,2-a]吡啶、咪唑并[1,5-a]吡啶、咪唑并[4,5-b]吡啶)在各个领域都有广泛的应用。在这篇综述中,我们简明扼要地介绍了咪唑并吡啶的荧光特性在成像工具、光电子学、金属离子检测等不同领域的用途。在所设计的荧光团中加入了激发态分子内质子转移、光诱导电子转移、荧光共振能量转移、分子内电荷转移等荧光机制,使其能够用于荧光应用。它已被广泛应用于金属离子检测,其中三唑连接的咪唑吡啶、β-咔啉咪唑吡啶杂化物、喹啉共轭咪唑吡啶等可实现选择性金属离子检测。此外,其他热门应用还包括有机发光二极管和细胞成像。本综述介绍了这一领域的最新发展,尤其侧重于分子的光学特性及其用途,这将有助于设计基于应用的新型咪唑吡啶衍生物。
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引用次数: 0
Determination of Pathogens by Electrophoretic and Spectrometric Techniques. 用电泳和光谱技术检测病原体。
IF 5.4 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2024-01-01 Epub Date: 2023-06-16 DOI: 10.1080/10408347.2023.2219748
Bogusław Buszewski, Dominika Błońska, Ewa Kłodzińska, Marek Konop, Anna Kubesová, Jiří Šalplachta

In modern medical diagnostics, where analytical chemistry plays a key role, fast and accurate identification of pathogens is becoming increasingly important. Infectious diseases pose a growing threat to public health due to population growth, international air travel, bacterial resistance to antibiotics, and other factors. For instance, the detection of SARS-CoV-2 in patient samples is a key tool to monitor the spread of the disease. While there are several techniques for identifying pathogens by their genetic code, most of these methods are too expensive or slow to effectively analyze clinical and environmental samples that may contain hundreds or even thousands of different microbes. Standard approaches (e.g., culture media and biochemical assays) are known to be very time- and labor-intensive. The purpose of this review paper is to highlight the problems associated with the analysis and identification of pathogens that cause many serious infections. Special attention was paid to the description of mechanisms and the explanation of the phenomena and processes occurring on the surface of pathogens as biocolloids (charge distribution). This review also highlights the importance of electromigration techniques and demonstrates their potential for pathogen pre-separation and fractionation and demonstrates the use of spectrometric methods, such as MALDI-TOF MS, for their detection and identification.

在分析化学发挥关键作用的现代医学诊断中,快速准确地识别病原体变得越来越重要。由于人口增长、国际航空旅行、细菌对抗生素的耐药性等因素,传染病对公共健康的威胁日益严重。例如,检测病人样本中的 SARS-CoV-2 是监测疾病传播的关键工具。虽然有几种通过遗传密码识别病原体的技术,但这些方法大多过于昂贵或缓慢,无法有效分析可能含有数百甚至数千种不同微生物的临床和环境样本。众所周知,标准方法(如培养基和生化检测)非常耗时耗力。本综述论文旨在强调与分析和鉴定导致许多严重感染的病原体有关的问题。本文特别关注了病原体表面作为生物胶体(电荷分布)所发生的机制描述和现象与过程的解释。这篇综述还强调了电迁移技术的重要性,展示了其在病原体预分离和分馏方面的潜力,并演示了光谱方法(如 MALDI-TOF MS)在病原体检测和鉴定方面的应用。
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引用次数: 0
A Review of Sensing Applications of Molecularly Imprinted Fluorescent Carbon Dots for Food and Biological Sample Analysis. 分子印迹荧光碳点在食品和生物样本分析中的传感应用综述。
IF 5.4 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2024-01-01 Epub Date: 2023-07-19 DOI: 10.1080/10408347.2023.2236215
Irshad Mohiuddin, Raghubir Singh, Varinder Kaur

Molecularly imprinted fluorescent carbon dots (MI-FCDs) find numerous applications in analytical chemistry due to their outstanding photoluminescent properties and having specific pockets for the recognition of target molecules. Despite significant advances, practical applications of MI-FCDs-based fluorescent sensors are still in their initial stages. Therefore, the topical developments in the synthesis, working, and application of MI-FCDs for sensing various target species (e.g., pharmaceuticals, biomolecules, pesticides, food additives, and miscellaneous species) in food and biological media have been highlighted. Moreover, a careful evaluation has been made to select the best methods based on their performance in terms of analytical parameters. To expand the horizons of this field, important challenges and future directions for developing MI-FCDs for practical use are also presented. This review will highlight important aspects of MI-FCDs-based fluorescent sensors for their applicability in food science, material science, environmental science, nanoscience, and biotechnology.

分子印迹荧光碳点(MI-FCDs)具有出色的光致发光特性,并具有识别目标分子的特定口袋,因此在分析化学中应用广泛。尽管取得了重大进展,但基于 MI-FCDs 的荧光传感器的实际应用仍处于起步阶段。因此,本报告重点介绍了 MI-FCDs 在合成、工作和应用方面的最新进展,这些 MI-FCDs 可用于检测食品和生物介质中的各种目标物种(如药物、生物大分子、农药、食品添加剂和其他物种)。此外,还根据分析参数的性能进行了仔细评估,以选出最佳方法。为了拓展这一领域的视野,还介绍了开发用于实际应用的 MI-FCD 所面临的重要挑战和未来发展方向。本综述将重点介绍基于 MI-FCDs 的荧光传感器在食品科学、材料科学、环境科学、纳米科学和生物技术领域应用的重要方面。
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引用次数: 0
Applications of Hyperspectral Imaging Technology Combined with Machine Learning in Quality Control of Traditional Chinese Medicine from the Perspective of Artificial Intelligence: A Review. 从人工智能角度看高光谱成像技术与机器学习相结合在中药质量控制中的应用:综述。
IF 5.4 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2024-01-01 Epub Date: 2023-05-29 DOI: 10.1080/10408347.2023.2207652
Yixia Pan, Hongxu Zhang, Yuan Chen, Xingchu Gong, Jizhong Yan, Hui Zhang

Traditional Chinese medicine (TCM) is the treasure of China, and the quality control of TCM is of crucial importance. In recent years, with the quick rise of artificial intelligence (AI) and the rapid development of hyperspectral imaging (HSI) technology, the combination of the two has been widely used in the quality evaluation of TCM. Machine learning (ML) is the core wisdom of AI, and its progress in rapid analysis and higher accuracy improves the potential of applying HSI to the field of TCM. This article reviewed five aspects of ML applied to hyperspectral data analysis of TCM: partition of data set, data preprocessing, data dimension reduction, qualitative or quantitative models, and model performance measurement. The different algorithms proposed by researchers for quality assessment of TCM were also compared. Finally, the challenges in the analysis of hyperspectral images for TCM were summarized, and the future works were prospected.

中药是中华瑰宝,中药质量控制至关重要。近年来,随着人工智能(AI)的迅速崛起和高光谱成像(HSI)技术的飞速发展,二者的结合在中药质量评价中得到了广泛应用。机器学习(ML)是人工智能的核心智慧,其在快速分析和更高精度方面的进步提高了高光谱成像技术在中药领域的应用潜力。本文从数据集分割、数据预处理、数据降维、定性或定量模型以及模型性能测量五个方面综述了应用于中医药高光谱数据分析的机器学习。此外,还比较了研究人员提出的用于中医质量评估的不同算法。最后,总结了中医高光谱图像分析所面临的挑战,并展望了未来的工作。
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引用次数: 0
Methodologies for Assessing Pancreatic Lipase Catalytic Activity: A Review. 评估胰脂肪酶催化活性的方法:综述。
IF 5.4 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2024-01-01 Epub Date: 2023-06-19 DOI: 10.1080/10408347.2023.2221731
Sílvia Rocha, Ana T Rufino, Marisa Freitas, Artur M S Silva, Félix Carvalho, Eduarda Fernandes

Obesity is a disease of epidemic proportions with a concerning increasing trend. Regarded as one of the main sources of energy, lipids can also represent a big part of an unnecessary intake of calories and be, therefore, directly related to the problem of obesity. Pancreatic lipase is an enzyme that is essential in the absorption and digestion of dietary fats and has been explored as an alternative for the reduction of fat absorption and consequent weigh loss. Literature describes a great variability of methodologies and experimental conditions used in research to evaluate the in vitro inhibitory activity of compounds against pancreatic lipase. However, in an attempt to choose the best approach, it is necessary to know all the reaction conditions and understand how these can affect the enzymatic assay. The objective of this review is to understand and summarize the methodologies and respective experimental conditions that are mainly used to evaluate pancreatic lipase catalytic activity. 156 studies were included in this work and a detailed description of the most commonly used UV/Vis spectrophotometric and fluorimetric instrumental techniques are presented, including a discussion regarding the differences found in the parameters used in both techniques, namely enzyme, substrate, buffer solutions, kinetics conditions, temperature and pH. This works shows that both UV/Vis spectrophotometry and fluorimetry are useful instrumental techniques for the evaluation of pancreatic lipase catalytic activity, presenting several advantages and limitations, which make the choice of parameters and experimental conditions a crucial decision to obtain the most reliable results.

肥胖症是一种流行性疾病,且有不断增加的趋势。脂质被认为是能量的主要来源之一,也是不必要摄入卡路里的主要部分,因此与肥胖问题直接相关。胰脂肪酶是膳食脂肪吸收和消化过程中不可或缺的一种酶,已被视为减少脂肪吸收、进而减轻体重的一种替代方法。文献描述,在评估化合物对胰脂肪酶的体外抑制活性的研究中,所使用的方法和实验条件存在很大差异。然而,为了选择最佳方法,有必要了解所有反应条件,并了解这些条件如何影响酶测定。本综述旨在了解和总结主要用于评估胰脂肪酶催化活性的方法和各自的实验条件。这项工作包括 156 项研究,并详细介绍了最常用的紫外/可见分光光度法和荧光法仪器技术,包括讨论两种技术所用参数的差异,即酶、底物、缓冲溶液、动力学条件、温度和 pH 值。这项研究表明,紫外/可见分光光度法和荧光测定法都是评价胰脂肪酶催化活性的有用仪器技术,它们都有一些优点和局限性,因此参数和实验条件的选择是获得最可靠结果的关键决定因素。
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引用次数: 0
Vibrational Spectroscopy Combined with Chemometrics in Authentication of Functional Foods. 振动光谱与化学计量学相结合在功能性食品认证中的应用。
IF 5 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2024-01-01 Epub Date: 2022-05-09 DOI: 10.1080/10408347.2022.2073433
Fengjiao Li, Jinyu Zhang, Yuanzhong Wang

Many foods have both edible and medical importance and are appreciated as functional foods, preventing diseases. However, due to unscrupulous vendors and imperfect market supervision mechanisms, curative foods are prone to adulteration or some other events that harm the interests of consumers. However, traditional analytical methods are unsuitable and expensive for a broad and complex application. Therefore, people urgently need a fast, efficient, and accurate detection method to protect self-interests. Recently, the study of target samples by vibration spectrum shows strong qualitative and quantitative ability. The model established by platform technology combined with the stoichiometric analysis method can obtain better parameters, which it has good robustness and can detect functional food efficiently, quickly and nondestructive. The review compared and prospect five different vibrational spectroscopic techniques (near-infrared, Fourier transform infrared, Raman, hyperspectral imaging spectroscopy and Terahertz spectroscopy). In order to better solve some of the actual situations faced by certification, we explore and through relevant research and investigation to appropriately highlight the applicability and importance of technology combined with chemometrics in functional food authentication. There are four categories of authentication discussed: functional food authenticated in source, processing method, fraud and ingredient ratio. This paper provides an innovative process for the authentication of functional food, which has a meaningful reference value for future review or scientific research of relevant departments.

许多食品具有食用和医疗的双重重要性,被认为是功能性食品,可以预防疾病。然而,由于商家的不法行为和市场监管机制的不完善,治疗食品容易出现掺假或其他损害消费者利益的事件。然而,传统的分析方法不适合和昂贵的广泛和复杂的应用。因此,人们迫切需要一种快速、高效、准确的检测方法来保护自身利益。近年来,利用振动谱对目标样品的研究显示出较强的定性和定量能力。利用平台技术与化学计量分析方法相结合建立的模型可以获得较好的参数,具有较好的鲁棒性,能够高效、快速、无损地检测功能食品。对近红外光谱、傅里叶变换红外光谱、拉曼光谱、高光谱成像光谱和太赫兹光谱这五种不同的振动光谱技术进行了比较和展望。为了更好地解决认证面临的一些实际情况,我们探索并通过相关的研究和调查,适当突出技术与化学计量学相结合在功能食品认证中的适用性和重要性。从来源认证、加工方法认证、欺诈认证和成分比例认证四个方面对功能性食品的认证进行了探讨。本文为功能食品的认证提供了一种创新的流程,对相关部门今后的审查或科学研究具有重要的参考价值。
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引用次数: 0
Carbon Dots in the Detection of Pathogenic Bacteria and Viruses. 碳点在病原菌和病毒检测中的应用。
IF 5 2区 化学 Q1 CHEMISTRY, ANALYTICAL Pub Date : 2024-01-01 Epub Date: 2022-05-09 DOI: 10.1080/10408347.2022.2072168
Erhan Zor, Fariba Mollarasouli, Leyla Karadurmus, Goksu Ozcelikay, Sibel A Ozkan

Bacterial and viruses pathogens are a significant hazard to human safety and health. In the imaging and detection of pathogenic microorganisms, the application of fluorescent nanoparticles is very useful. Carbon dots and quantum dots are preferred in this regard as labels, amplifiers, and/or electrode modifiers because of their outstanding features. However, precise diagnostics to identify numerous harmful bacteria simultaneously still face considerable hurdles, yet it is an inevitable issue. With the growing development of biosensors, nanoproduct-based bio-sensing has recently become one of the most promising methods for accurately identifying and quantifying various pathogens at low cost, high sensitivity, and selectivity, with time savings. The most recent applications of carbon dots in optical and electrochemical-based sensors are discussed in this review, along with some examples of pathogen sensors.HighlightsSimultaneous and early detection of pathogens is a critical issue in the management of readily spread to prevent epidemics.Carbon dots-based biosensors are more preferred in detection of pathogens due to high selectivity and sensitivity, as well as quick and cheap point-of-care platform.Summary of recent advances in the design of optical and electrochemical biosensors for the detection of pathogens.

细菌和病毒病原体是对人类安全和健康的重大危害。在病原微生物的成像和检测中,荧光纳米粒子的应用非常有用。在这方面,碳点和量子点由于其突出的特征而优选作为标签、放大器和/或电极改性剂。然而,同时识别大量有害细菌的精确诊断仍然面临相当大的障碍,但这是一个不可避免的问题。随着生物传感器的不断发展,基于纳米产品的生物传感最近已成为最有前途的方法之一,可以以低成本、高灵敏度和选择性准确识别和量化各种病原体,并节省时间。本文讨论了碳点在光学和电化学传感器中的最新应用,以及病原体传感器的一些例子。亮点病原体的快速和早期检测是管理易传播疾病以预防流行病的一个关键问题。基于碳点的生物传感器由于具有高选择性和灵敏度,以及快速廉价的护理点平台,在病原体检测中更受青睐。病原体检测用光学和电化学生物传感器设计的最新进展综述。
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引用次数: 0
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