نتایج جستجو برای: potentiometric sensor

تعداد نتایج: 191184  

Journal: :Chemical communications 2009
Anca-Iulia Stoica Clara Viñas Francesc Teixidor

A potentiometric sensor for enantiomers has been prepared with no chiral additives, only cobaltabisdicarbollide and the protonated enantiomer.

Journal: :Sensors and Actuators B: Chemical 2018

2012
Kimleang Khun Zafar Hussain Ibupoto Syed Usman Ali Chan Ouern Chey Omer Nur Magnus Willander Syed Muhammad Usman Ali Chan Oeurn Chey

In this work, we are presenting an iron ion (Fe 3+ ) potentiometric sensor based on functionalized ZnO nanorods with selective ionophore (18 crown 6). Zinc oxide nanorods with a diameter of about 100 to 150 nm and 1μm in length were grown on gold coated glass. The selective Fe 3+ ionophore sensor with highly aligned ZnO nanorods has given high sensitivity, acceptable selectivity, reproducibilit...

2014
Claudio Zuliani Giusy Matzeu Dermot Diamond

In this paper, the preparation of a potentiometric strip for pH monitoring in saliva samples is reported. The potentiometric strip consists of a solid contact pH-selective and of a solidcontact ionogel reference electrode prepared on a dual screen printed substrate. The screen printing protocols, i.e., type of inks and number of deposits, were adjusted to relatively improve the batch reproducib...

2014
Ahmed Abu Ismaiel Mohamed Kheireddine Aroua Rozita Yusoff

In this study, a potentiometric sensor composed of palm shell activated carbon modified with trioctylmethylammonium thiosalicylate (TOMATS) was used for the potentiometric determination of mercury ions in water samples. The proposed potentiometric sensor has good operating characteristics towards Hg (II), including a relatively high selectivity; a Nernstian response to Hg (II) ions in a concent...

Journal: :Analytical Methods 2021

For the first time, an MIP potentiometric sensor based covalent recognition for determination of protonated dopamine is described.

Journal: :Biosensors & bioelectronics 2008
Yantian Wang Yanxiu Zhou Jonathon Sokolov Basil Rigas Kalle Levon Miriam Rafailovich

Surface molecular imprinting, as compared to molecular imprinted bulk polymers, has the advantages of higher re-occupation percentage of the reception sites, fast response, integration of sensing element and transducer, etc. In this study, a potentiometric protein sensor was developed based on the surface molecular imprinting technique. Using the self-assembled monolayers of alkanethiol with hy...

2001
Erno Lindner Robert E. Gyurcsányi Bradford D. Pendley

The pH-sensitive chromoionophores brought the dream of the ion-selective membrane scientist close to realization. With the help of these molecules, one can build pH-sensitive, ion-selective electrodes and look into the bulk of solvent polymeric membranes during potentiometric measurements (spectropotentiometry) and image concentration profiles in situ with high spatial and temporal resolution. ...

Arezoo Ghaemi, Fariba Mehranfar Haman Tavakkoli

A new polyvinyl choloride (PVC) membrane sensor for cerium (III) was prepared based on 4,13-didecyl-1,7,10,16-tetraoxa-4,13-diazacyclooctadecane (kryptofix22DD) as an ionophore. The sensor exhibites a linear concentration range of 1.0×10-6 to 1.0×10-1 M, with a Nernstian slope of 18.0±1.0 mV/decade, and a detection limit of 9.7×10-7 M. It has a fast response tim...

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