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861 Newest Publications about the topic buffer solutions

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Differentiate bisulfite from sulfite by a new cycloruthenated 2-(2-thienyl)pyridine complex in pure water

03-Jun-2018 | Author(s): Chaoyi Xie, Kang Du, Meng Xie, Fan Lv, Xianghong Li, Dingguo Tang, Inorganic Chemistry Communications, 2018

Publication date: August 2018 Source:Inorganic Chemistry Communications, Volume 94 Author(s): Chaoyi Xie, Kang Du, Meng Xie, Fan Lv, Xianghong Li, Dingguo Tang A new cycloruthenated 2-(2-thienyl)pyridine complex (1) with a benzo[e]indolium block was successfully synthesized and ...

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3D SWCNTs-coumarin hybrid material for ultra-sensitive determination of quercetin antioxidant capacity

15-Apr-2018 | Author(s): Ahmet Şenocak, Baybars Köksoy, Erhan Demirbaş, Tamara Basova, Mahmut Durmuş, Sensors and Actuators B: Chemical, 2018

Publication date: 15 August 2018 Source:Sensors and Actuators B: Chemical, Volume 267 Author(s): Ahmet Şenocak, Baybars Köksoy, Erhan Demirbaş, Tamara Basova, Mahmut Durmuş The novel 7-propinyloxy-3-(p-propinyloxyphenyl) coumarin having terminal ethynyl groups was synthesized for ...

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A microfluidic chip with a staircase pH gradient generator, a packed column and a fraction collector for chromatofocusing of proteins

18-Jan-2018 | Hoon Suk Rho, Alexander Thomas Hanke, Marcel Ottens, Han Gardeniers, ELECTROPHORESIS, 2018

Abstract A microfluidic device for pH gradient chromatofocusing is presented, which performs creation of a micro‐column, pH gradient generation, and fraction collection in a single device. Using a sieve micro‐valve, anion exchange particles were packed into a microchannel in order to realize a ...

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Materials, Vol. 11, Pages 123: Effect of Exposed Surface Area, Volume and Environmental pH on the Calcium Ion Release of Three Commercially Available Tricalcium Silicate Based Dental Cements

13-Jan-2018 | Rajasekharan, Sivaprakash ; Vercruysse, Chris ; Martens, Luc ; Verbeeck, Ronald, Materials, 2018

Materials, Vol. 11, Pages 123: Effect of Exposed Surface Area, Volume and Environmental pH on the Calcium Ion Release of Three Commercially Available Tricalcium Silicate Based Dental Cements Materials doi: 10.3390/ma11010123 Authors: Sivaprakash Rajasekharan Chris Vercruysse Luc ...

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Time Domain Dielectric Spectroscopic Studies of Potassium Oleate and Cetyl Pyridinium Chloride in Acetate Buffer Solution

18-Dec-2017 | D. Gopalakrishnan, A. C. Kumbharkhane, R. Sampathkumar, Macromolecular Symposia, 2017

Dielectric relaxation studies of acetate buffer solutions of anionic potassium oleate (PO) and cationic cetyl pyridinium chloride (CPC) surfactants at four different temperatures 283, 288, 293 and 298 K as a function of surfactant concentrations have been carried out in the 10 MHz to 30 GHz ...

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Chitosan-Promoted Direct Electrochemistry of Human Sulfite Oxidase

21-Sep-2017 | Palraj Kalimuthu; Abdel A. Belaidi; Guenter Schwarz; Paul V. Bernhardt, Journal of Physical Chemistry B, 2017

Direct electrochemistry of human sulfite oxidase (HSO) has been achieved on carboxylate-terminated self-assembled monolayers cast on a Au working electrode in the presence of the promoter chitosan. The modified electrode facilitates a well-defined nonturnover redox response from the heme cofactor ...

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Electrocatalitic behaviour of serpentinite modified carbon paste electrode

13-Aug-2017 | Author(s): Marjan S. Ranđelović, Milan Z. Momčilović, Goran Nikolić, Jelena S. Ðordević, Journal of Electroanalytical Chemistry, 2017

Publication date: 15 September 2017 Source:Journal of Electroanalytical Chemistry, Volume 801 Author(s): Marjan S. Ranđelović, Milan Z. Momčilović, Goran Nikolić, Jelena S. Ðordević Electrochemistry of carbon paste electrode which contained serpentinite powder and graphite in 1:1 ...

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Potential‐cycling synthesis of single Pt atoms for efficient hydrogen evolution in neutral media

08-Aug-2017 | Jun Luo, Lihan Zhang, Lili Han, Haoxuan Liu, Xijun Liu, Angewandte Chemie International Edition, 2017

Single‐atom catalysts (SACs) have exhibited high activities for the hydrogen evolution reaction (HER) electrocatalysis in acidic or alkaline media, when they are used with binders on cathodes. However, to date, no SACs have been reported for the HER electrocatalysis in neutral media. Here, we ...

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Preparation of chitosan functionalized end‐capped Ag‐NPs and composited with Fe3O4‐NPs: Controlled release to pH‐responsive delivery of progesterone and antibacterial activity against pseudomonas aeruginosa (PAO‐1)

17-Jul-2017 | Faezeh Pourebrahim, Mehrorang Ghaedi, Kheibar Dashtian, Shadi Kheirandish, Ramin Jannesar, Vahid Pezeshkpour, Applied Organometallic Chemistry, 2017

In this work, functionalized chitosan end‐capped Ag nanoparticles (NPs) and composited with Fe3O4‐NPs was prepared as pH‐responsive controlled release carrier for gastric‐specific drug delivery. The structure of prepared material was characterized by FE‐SEM, XRD, EDS and FT‐IR analysis. The ...

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Determination of the Dissociation Constants of 5-Substituted 1H-Tetrazoles and Amino Acids by the Concentration Spectrophotometric Method: A New Approach

17-Jul-2017 | Tatiana Aleksandrovna Skripnikova; Svetlana Sergeevna Lysova; Yuriy Eduardovich Zevatskii, Journal of Chemical & Engineering Data, 2017

A new theoretical and experimental approach to determination of the thermodynamic dissociation constants of a number of active pharmaceutical compounds, such as 5-substituted-1H-tetrazoles and amino acids, has been proposed. We obtained our experimental data from A (absorbance) to C/mol·dm–3 ...

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