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10,435 Newest Publications in analytical chemistry

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Prussian Blue Nanoparticles as a Catalytic Label in a Sandwich Nanozyme-Linked Immunosorbent Assay

18-Jan-2018 | Zdeněk Farka; Veronika Čunderlová; Veronika Horáčková; Matěj Pastucha; Zuzana Mikušová; Antonín Hlaváček; Petr Skládal, Analytical Chemistry, 2018

Enzyme immunoassays are widely used for detection of analytes within various samples. However, enzymes as labels suffer several disadvantages such as high production cost and limited stability. Catalytic nanoparticles (nanozymes) can be used as an alternative label in immunoassays overcoming the ...

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Enzyme-Initiated Quinone-Chitosan Conjugation Chemistry: Toward A General in Situ Strategy for High-Throughput Photoelectrochemical Enzymatic Bioanalysis

18-Jan-2018 | Guang-Li Wang; Fang Yuan; Tiantian Gu; Yuming Dong; Qian Wang; Wei-Wei Zhao, Analytical Chemistry, 2018

Herein we report a general and novel strategy for high-throughput photoelectrochemical (PEC) enzymatic bioanalysis on the basis of enzyme-initiated quinone-chitosan conjugation chemistry (QCCC). Specifically, the strategy was illustrated by using a model quinones-generating oxidase of tyrosinase ...

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Capillary Electrophoresis: Trends and Recent Advances

18-Jan-2018 | Robert L. C. Voeten; Iro K. Ventouri; Rob Haselberg; Govert W. Somsen, Analytical Chemistry, 2018

Analytical Chemistry DOI: 10.1021/acs.analchem.8b00015

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An Optical Biosensor-Based Quantification of the Microcystin Synthetase A Gene: Early Warning of Toxic Cyanobacterial Blooming

18-Jan-2018 | Jinchuan Liu; Xiaohong Zhou; Hanchang Shi, Analytical Chemistry, 2018

The monitoring and control of toxic cyanobacterial strains, which can produce microcystins, is critical to protect human and ecological health. We herein reported an optical-biosensor-based quantification of the microcystin synthetase A (mcyA) gene so as to discriminate microcystin-producing ...

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Determining Double Bond Position in Lipids Using Online Ozonolysis Coupled to Liquid Chromatography and Ion Mobility-Mass Spectrometry

17-Jan-2018 | Rachel A. Harris; Jody C. May; Craig A. Stinson; Yu Xia; John A. McLean, Analytical Chemistry, 2018

The increasing focus on lipid metabolism has revealed a need for analytical techniques capable of structurally characterizing lipids with a high degree of specificity. Lipids can exist as any one of a large number of double bond positional isomers, which are indistinguishable by single-stage mass ...

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Application of a Deep Neural Network to Metabolomics Studies and Its Performance in Determining Important Variables

17-Jan-2018 | Yasuhiro Date; Jun Kikuchi, Analytical Chemistry, 2018

Deep neural networks (DNNs), which are kinds of the machine learning approaches, are powerful tools for analyzing big sets of data derived from biological and environmental systems. However, DNNs are not applicable to metabolomics studies because they have difficulty in identifying contribution ...

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Separation of Methylated Histone Peptides via Host-Assisted Capillary Electrophoresis

17-Jan-2018 | Jiwon Lee; Lizeth Perez; Yang Liu; Hua Wang; Richard J. Hooley; Wenwan Zhong, Analytical Chemistry, 2018

Lysine methylation in protein is one important epigenetic mechanism that regulates diverse biological processes but is challenging to study due to the large variability in methylation levels and sites. Here, we show that supramolecular hosts such as calixarenes and cucurbiturils can be applied in ...

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Hairpin-Contained i-Motif Based Fluorescent Ratiometric Probe for High-Resolution and Sensitive Response of Small pH Variations

17-Jan-2018 | Wenjie Ma; Lv’an Yan; Xiaoxiao He; Taiping Qing; Yanli Lei; Zhenzhen Qiao; Dinggeng He; Kaihang Huang; Kemin Wang, Analytical Chemistry, 2018

Intracellular pH (pHi) is an important parameter associated with cellular behaviors and pathological conditions. Sensing pHi and monitoring its changes are essential but challenging due to the lack of high-sensitive probes. Herein, a ratiometric fluorescent probe with ultra pH-sensitivity is ...

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Surface-Modified Wooden-Tip Electrospray Ionization Mass Spectrometry for Enhanced Detection of Analytes in Complex Samples

17-Jan-2018 | Bin Hu; Pui-Kin So; Yunyun Yang; Jiewei Deng; Yi-Ching Choi; Tiangang Luan; Zhong-Ping Yao, Analytical Chemistry, 2018

Replacement of capillary with solid substrates for sample loading and ionization has created many new possibilities for electrospray ionization mass spectrometry (ESI-MS). Surface modification is an attractive strategy to enhance the analytical capability of solid-substrate ESI-MS and allow ...

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Gadolinium-Labeled Aminoglycoside and Its Potential Application as a Bacteria-Targeting Magnetic Resonance Imaging Contrast Agent

17-Jan-2018 | Leilei Zhang; Yun Liu; Qingyang Zhang; Tiegang Li; Min Yang; Qingqiang Yao; Xilei Xie; Hai-Yu Hu, Analytical Chemistry, 2018

Magnetic resonance imaging (MRI) is a powerful diagnostic technique that can penetrate deep into tissue providing excellent spatial resolution without the need for ionizing radiation or harmful radionuclides. However, diagnosing bacterial infections in vivo with clinical MRI is severely hampered ...

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