Ghithan, Jafar H Moreno, Monica Keynton, Robert S O'Toole, Martin G Mendes, Sergio B
Published in
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
Physical and chemical properties of a redox protein adsorbed to different interfaces of a multilayer immunoassay assembly were studied using a single-mode, electro-active, integrated optical waveguide (SM-EA-IOW) platform. For each interface of the immunoassay assembly (indium tin oxide, 3-aminopropyl triethoxysilane, recombinant protein G, antibod...
Uematsu, Kohei Matsubara, Yuka Katano, Hajime Osakai, Toshiyuki
Published in
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
This paper describes that fluorous ethers, 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether and 1H,1H,5H-octafluoropentyl-1,1,2,2-tetrafluoroethyl ether, can be used for a non-aqueous medium in electrochemistry at a liquid | liquid interface. These solvents dissolved a high concentration of tetraalkylammonium salts with highly-fluorinated a...
Zhang, Huiwen Yao, Shuo Zhao, Chao Zhao, Wei Li, Juan Wang, Juan
Published in
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
A facile and one-step colorimetric assay is described for the determination of glutathione (GSH). It is based on the use of manganese dioxide-decorated magnetic ([email protected]) nanocomposite that was prepared by an in-situ redox reaction. It exhibits oxidase-mimicking activity and can catalyze the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) with...
Sun, Yang Yao, Yusheng Wang, Bingrong Li, Yiying Li, Siming Sui, Yuxia Qiu, Bin
Published in
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
In recent years, more and more research is being conducted on microRNAs and their involvement in the regulation of autophagy phagocytosis which is closely related to tumor growth. MicroRNA-21 is a kind of small RNA that can regulate gene expression and plays a significant role in autophagy of tumor cells. But the detection of microRNAs had always b...
Iha, Kanako Kyosei, Yuta Namba, Mayuri Makioka, Daiki Yamura, Sou Watabe, Satoshi Yoshimura, Teruki Ito, Etsuro
Published in
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
An enzyme immunoassay, in which an enzyme (e.g., alkaline phosphatase, ALP) is conjugated with an antibody, is a precise and simple protein detection method. Precise measurements of enzymes at low concentrations allow for ultrasensitive protein detection. The application of a phosphorylated substrate to ALP, followed by using a dephosphorylated sub...
Öner, Miray Bodur, Süleyman Erarpat, Sezin Bakirdere, Sezgin
Published in
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
A novel extraction method named hydrogen fluoride assisted-glass surface etching based liquid phase microextraction (HF-GSE-LPME) was proposed to determine 4-n-nonylphenol at trace levels by gas chromatography-mass spectrometry (GC-MS). After the evaluation of system analytical performance for the HF-GSE-LPME-GC-MS system, limit of detection (LOD) ...
Beppu, Kodai Saito, Daichi Muguruma, Yoshio Takahashi, Miki Harada, Shuichi Inoue, Koichi
Published in
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
This study describes the development of a new stable isotope labeling method by carbon-13 in bacteria culture (SILCB) for the analysis of residual antibiotics via liquid chromatography with tandem mass spectrometry (LC-MS/MS). Stable isotope dilution (SID) LC-MS/MS with QuEChERS was employed to determine avermectin, particularly avermectin B1a (AV-...
Umeda, Hiroki Mezaki, Yuya Oshio, Ayumi Kaneko, Yasunori Okamoto, Ryota Kusumoto, Sakuya Kunimura, Shinsuke
Published in
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
An easy method is presented for producing gold nanoparticles. We show that by performing simultaneous low-temperature heating of a quartz glass substrate on which the dry residue of a 10 μL droplet of an HCl acidic solution of HAuCl4·4H2O is deposited and a counter substrate using Peltier devices in a low vacuum produced by a rotary pump, gold nano...
Hashi, Kenjiro Ohki, Shinobu Mogami, Yuuki Goto, Atsushi Shimizu, Tadashi
Published in
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
Understanding the transport property of Li ions is crucial for improving the performance of Li-ion batteries. To investigate the ion diffusion at high temperatures, we constructed a high-temperature pulsed-field-gradient (PFG) nuclear magnetic resonance (NMR) probe capable of measurements at temperatures >700 K. The accuracy of the sample temperatu...
Tange, Akari Higashi, Azumi Kishikawa, Naoya Kuroda, Naotaka
Published in
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
Although benzofuran-2-boronic acid hardly emits fluorescence, it can be rapidly converted to a highly fluorescent benzofuran dimer after mixing with a palladium catalyst and amine. We found that a fluorescence enhancement accompanying dimerization was quantitatively promoted upon increasing the concentration of amine. In the present study, we devel...
