Sensor selectivity factors influencing

The common properties attributed to helper ligands in improving lanthanide-based detection techniques include enhanced stability, sensitivity, and selectivity. We will start with the effects of ancillary ligands on lanthanide photophysics and then explore the impacts of these ligands on sensor properties (Section II). Other factors influencing stability, such as sterics and oxophilicity, will be summarized in Section III. A brief discussion of future applications will follow (Section IV). 

The research program included also both the theory and practical aspects of ion-selective electrodes. Important part of these studies was the research oti the selectivity of such sensors and interferents and the change of selectivity imder influence of various factors. Potentiometric enzymatic sensors and sensors based oti pH-electrodes were developed and used in clinical chemistry. Kinetic model of the biosensors response with consideration of all proteolytic reactions of substrates and products of enzymatic reactions and transport processes in the membranes was elaborated. Conducting polymers and bilayer Upid membranes were used to design sensors and biosensors. 

There are two main factors that influence the selectivity of a sensor limits in discrimination of an interfering ion and upper limits in stability constant of an analyte-ionophore complex. While an ideal ionophore does not form complexes with interfering ions, too strong complexation with the primary ion leads to a massive extraction of analyte into membrane phase coupled with a coextraction of sample counter-ions, known as Donnan exclusion failure. In such cases, at high activities and lipophilicities of sample electrolytes, fli(org) increases and a breakdown of membrane permselectivity prevents the Nemst equation to hold. 

Ivanovskaya, M. Kotsikau, D. Faglia, G. Nelli, P., Influence of chemical composition and structural factors of Fe203/In203 sensors on their selectivity and sensitivity to ethanol, Sens. Actuators B 2003, 96, 498-503... 

Selection of the temperature sensor or sensors to be used in the test stand is influenced by many factors. The important point to remember here is that, in general, probe manufacturers will not have the extensive facilities necessary to provide sufficient performance data to facilitate an evaluation of all the characteristics you may consider important. This is especially true for liquid hydrogen measurements and adds emphasis to the fact that you must have your own calibration facilities. 

A Nafion film-coated micro-electrode is very advantageous for in vivo detection of neurotransmitter-related species such as dopamine and catecholamine . The partition and diffusion of the substance in the coating film are generally important factors that influence the response characteristics of the coated electrode. A quinonoid polymer electrode, prepared by the electrochemical oxidation of mercaptohydro-quinone and modified with mercaptide, functioned as a selective ion sensor for heavy metal ions such as Ag", Hg , Cd , and Cu in solution A PVC membrane electrode containing macrocyclic polyethers with sulfur atoms (id) exhibited appreciable selectivity for Ca " " relative to Mg ", alkali metal ions and... 

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