Chinese Journal of Analytical Chemistry 
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This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.Simultaneous Determination of Glutamate and Calcium Ion in Rat Brain during Spreading Depression and Ischemia Processes
This study provided a simple and effective approach for in vivo analysis of two or more chemical substances.Graphical abstractA dual function microelectrode (DFME) biosensor was designed and developed for simultaneous determination of glutamate and Ca2+, and was successfully applied for real-time monitoring of glutamate and Ca2+ in live rat brain during spreading depression (SD) and ischemia processes. (Source: Chinese Journal of Analytical Chemistry)
Source: Chinese Journal of Analytical Chemistry - March 9, 2019 Category: Chemistry Source Type: research
Study on Molecular Recognition of Pinocembrin with Methylated-β-Cyclodextrin
Publication date: March 2019Source: Chinese Journal of Analytical Chemistry, Volume 47, Issue 3Author(s): Yao DU, Shu-Ya ZHOU, Yun-Han YANG, Jun-Li YANG, Wen CHEN, Li-Juan YANGAbstractThe inclusion behavior, inclusion capacity and inclusion mode of pinocembrin (PIN) with dimethyl-β-cyclodextrin (DM-β-CD) and trimethyl-β-cyclodextrin (TM-β-CD) were characterized by X-ray diffraction (XRD), thermal analysis, scanning electron microscopy (SEM), UV-visible spectral titration and molecular docking. The results showed that the packing ratio of PIN/DM-β-CD complex and PIN/TM-β-CD complex was 1:1. The water solubility of PIN...
Source: Chinese Journal of Analytical Chemistry - March 9, 2019 Category: Chemistry Source Type: research
Accurate Determination of Lithium Isotopic Compositions in Geological Samples by Multi-collector Inductively Coupled Plasma-Mass Spectrometry
This study established a simple and efficient method for the separation of Li from different types of geological samples (water and rock) and an accurate measurement of Li isotopic compositions. The external precision (2σ) of this technique, determined by repeated measurement of pure Li standard solutions and seawater was < ±0.8‰. Experimental results showed significant Li isotopic fractionation during leaching process, and this deviation can be avoided by recovering Li completely. (Source: Chinese Journal of Analytical Chemistry)
Source: Chinese Journal of Analytical Chemistry - March 9, 2019 Category: Chemistry Source Type: research
Spectroscopic and Molecular Docking Approaches for Investigation of Interaction of Phellopterin with Human Serum Albumin
Publication date: March 2019Source: Chinese Journal of Analytical Chemistry, Volume 47, Issue 3Author(s): Tuan-Wu CAO, Xiao-Ping TAN, Lu-Ping HUANG, Jian-Wei SHI, Gang XUAbstractThe mechanism of interaction between human serum albumin (HSA) and natural product phellopterin (PL) from Angelica dahurica was investigated by spectroscopic techniques with molecular docking under simulated physiological conditions. The experimental results showed that the fluorescence of HSA was regularly quenched by PL, and the quenching constants (KSV) decreased with increasing temperature, which indicated that the quenching mechanism was a sta...
Source: Chinese Journal of Analytical Chemistry - March 9, 2019 Category: Chemistry Source Type: research
Advances in Microfluidic Biosensors Based on Luminescent Bacteria
Publication date: February 2019Source: Chinese Journal of Analytical Chemistry, Volume 47, Issue 2Author(s): Xiao-Wei JIN, Zhe-Yu LI, Pian-Pian XU, Xiao-Yan ZHANG, Nan-Qi REN, Vitaliy V. Kurilenko, Kai SUNAbstractLuminescent bacteria can emit visible light at 450–490 nm, and its luminous intensity decreases with the increase of the concentration of toxic substances in test solution. The method using luminescent bacteria is widely used in acute toxicity analysis of water quality because it is a simple, rapid and low-cost way. In recent years, biosensors based on luminescent bacteria have attracted more and more attention,...
Source: Chinese Journal of Analytical Chemistry - February 9, 2019 Category: Chemistry Source Type: research
Titanium Dioxide-Yttrium(III)-Oxide Composite Based Cataluminescence Gas Sensor for Fast Detection of Propylene Oxide
Publication date: February 2019Source: Chinese Journal of Analytical Chemistry, Volume 47, Issue 2Author(s): Ming LI, Jing-Ye CHEN, Yu-Fei HU, Gong-Ke LIAbstractBy using nano TiO2-Y2O3 as catalyst, cataluminescence (CTL) phenomenon of propylene oxide (PO) was studied, and it was found that the sensor has high sensitivity and good selectivity for the detection of propylene oxide. The common volatile organic compounds (VOCs) such as acetone, acetaldehyde and benzene show no response to the catalysis of TiO2-Y2O3. Based on this phenomenon, a propylene oxide CTL sensor was designed. The ratio of TiO2 and Y2O3 and the annealed ...
Source: Chinese Journal of Analytical Chemistry - February 9, 2019 Category: Chemistry Source Type: research
Fabrication of Electrochemical Sensor Modified with Porous Graphene for Determination of Trace Calycosin
This study provided a novel analytical method for detection of CYS, rapid identification of Radix Hedysari and Radix Astragali, and gave another way for the trace analysis of CYS in biological samples. Furthermore, it would also deepen the application of PG in the field of pharmaceutical analysis.Graphical AbstractIt is significant to establish a simple, fast and precise analytical method for analysis of calycosin content in herbal materials, herbal preparations and human blood with the minimum blood concentration to realize the quality control of Chinese medicine and the diagnosis of diseases. This study provided a novel ...
Source: Chinese Journal of Analytical Chemistry - February 9, 2019 Category: Chemistry Source Type: research
Study of Electrooxidation Behavior of Nitrite on Gold Nanoparticles/Graphitizing Carbon Felt Electrode and Its Analytical Application
Publication date: February 2019Source: Chinese Journal of Analytical Chemistry, Volume 47, Issue 2Author(s): Wei WEI, Shou-Guo WUAbstractIn this work, a gold nanoparticles/graphitizing carbon felt electrode (AuNPs/GCFE) was fabricated and a disposable sensor was thus fabricated to detect nitrite quickly and conveniently. The kinetic parameters of the electrode were studied in phosphate buffer solution (PBS). Under the optimal conditions, by using cyclic voltammetry, the oxidation peak current was linear with the concentration of nitrite in the range from 1.00 × 10−6 M to 3.35 × 10−3 M, with a detection limit of 9.50 ...
Source: Chinese Journal of Analytical Chemistry - February 9, 2019 Category: Chemistry Source Type: research
Electronic and Functional Structure of Copper in Plant Cu/Zn Superoxide Dismutase with Combined Site-directed Mutagenesis and Electron Paramagnetic Resonance
Publication date: February 2019Source: Chinese Journal of Analytical Chemistry, Volume 47, Issue 2Author(s): Zuo-Jun LIU, Ming CHEN, Sheng-Wei HUANG, Ming-Hao LI, Jin-Yan HOU, Ying-Ji MAO, Wei TONG, Ji-Hu SU, Li-Fang WUAbstractArabidopsis thaliana copper-zinc superoxide dismutase 1 (AtSOD1) is a typical metalloenzyme conferring cellular protection against the excessive accumulation of toxic reactive oxygen species, and is therefore considered as a critical protein. However, the structure and function of the vital amino acids around the active site of AtSOD1 remain poorly understood. Herein, the coordinated geometry of the ...
Source: Chinese Journal of Analytical Chemistry - February 9, 2019 Category: Chemistry Source Type: research
Progress of Sonic-Spray Ionization Mass Spectrometry and Its Applications
Publication date: January 2019Source: Chinese Journal of Analytical Chemistry, Volume 47, Issue 1Author(s): Yue-Guang LYU, Hua BAI, Wen-Tao LI, Jing-Kui YANG, Yu-Jian HE, Qiang MAAbstractSonic-spray ionization (SSI) is a previously developed soft ionization technique which does not need auxiliary methods such as voltage, heating, laser, or corona discharge. Spray ionization can be achieved under normal temperature and atmospheric pressure by inputting high-speed gas coaxial within the capillary. As an atmospheric pressure ion source, this technique was widely used as the interface of liquid chromatography-mass spectrometry...
Source: Chinese Journal of Analytical Chemistry - January 10, 2019 Category: Chemistry Source Type: research
Research Progress and Application of Ion Funnel Technique
Publication date: January 2019Source: Chinese Journal of Analytical Chemistry, Volume 47, Issue 1Author(s): Teng GUO, Zhen PENG, Hui ZHU, Li XU, Jun-Guo DONG, Zheng-Xu HUANG, Ping CHENG, Zhen ZHOUAbstractIon funnel is a new-style ion guider which can reduce spatial divergence and energy dispersity of the transmission ions by using radio frequency (RF) electric field to confine the ions radially and the direct current (DC) axial electric field to move the ions toward the exit, and thus it can greatly increase the ion transmission efficiency and improve the sensitivity of the mass spectrometry. Since ion funnel was invented ...
Source: Chinese Journal of Analytical Chemistry - January 10, 2019 Category: Chemistry Source Type: research
Detection of S-palmitoylated Proteins in Mouse Heart Tissue Based on Different Precipitation Methods
In this study, the effects of acetone precipitation and methanol-chloroform precipitation on the detection of S-palmitoylation proteins in acyl-biotin exchange method were compared, and the S-palmitoylated proteins in mouse cardiac tissue were analyzed. First, N-ethylmaleimide (NEM) was used to block free sulfhydryls within protein molecules. Then, biotinylation reagent (HPDP-Biotin) was used to label the newly produced cysteine thiols that were resulted from treatment by hydroxylamine (HA) in mouse heart tissue. During the ABE reaction, excess unreacted NEM, HA and HPDP-Biotin were removed by precipitation of the proteins...
Source: Chinese Journal of Analytical Chemistry - January 10, 2019 Category: Chemistry Source Type: research
Quantitative Analysis of Main Components of Natural Gas Based on Raman Spectroscopy
Publication date: January 2019Source: Chinese Journal of Analytical Chemistry, Volume 47, Issue 1Author(s): Ying GAO, Lian-Kui DAI, Hua-Dong ZHU, Yun-Liang CHEN, Li ZHOUAbstractNatural gas is composed of methane, ethane, propane, carbon dioxide, nitrogen, hydrogen, carbon monoxide and unknown alkane components of C4 or more (denoted as C4+) after desulfurization and dehydration treatment. The concentrations of the first seven components account for more than 90% of natural gas. When analyzing the natural gas composition using Raman spectral analysis methods, a small amount of unknown alkane components C4+ will have a negat...
Source: Chinese Journal of Analytical Chemistry - January 10, 2019 Category: Chemistry Source Type: research
Correlation between Boron Isotope of Coral Acropora and pH Value of Seawater Surface
Publication date: January 2019Source: Chinese Journal of Analytical Chemistry, Volume 47, Issue 1Author(s): Yan-Ling ZHANG, Ying-Kai XIAO, Yun-Qi MA, Zhi-Qi LIU, Jun-Lin WANG, Yu-Xiu LIUAbstractA water circulation system with the almost same element composition and socket type was adopted in coral Acropora culture under different seawater pH value conditions and the data of the relationship between boron isotopic compositions of coral and seawater pH value by thermoelectric ionization mass spectrometer were obtained. According to the correlations between αcarb-3 of coral and the pH value of cultured seawater, αcarb-3 was...
Source: Chinese Journal of Analytical Chemistry - January 10, 2019 Category: Chemistry Source Type: research
Neurotransmitter Biomolecule Transfers Across Liquid/Liquid Interface Through A Thick Organic Membrane-Modified Electrode
We report a study of two neurotransmitter transfers, dopamine and adrenalone across the liquid/liquid interface supported by a thick organic membrane modified electrode. This system overcomes the limitation of polarized potential window based on an electron transfer coupled ion transfer reaction mechanism. The crucial design of a thick organic membrane ensures that the generated ionic ET products could not result in self-transfer interruption. (Source: Chinese Journal of Analytical Chemistry)
Source: Chinese Journal of Analytical Chemistry - January 10, 2019 Category: Chemistry Source Type: research
