Novel potentiometric and optical silver ion-selective sensors with subnanomolar detection limits
نویسندگان
چکیده
منابع مشابه
Polymer membrane-based ion-, gas- and bio-selective potentiometric sensors.
Recent progress in the design of new polymer membrane-based potentiometric ion-, gas- and bio-selective electrodes in chemistry laboratories at the University of Michigan (Ann Arbor) is reviewed. Emphasis is placed on describing the performance of devices for measuring anions (e.g., salicylate, thiocyanate, chloride and heparin) and gases (e.g., ammonia, carbon dioxide and oxygen) in biological...
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The design and properties of novel type of solid-contact ionophore-based ion-selective microelectrodes are reported. The microelectrode is based on an insulated needle-shaped metallic wire with an exposed apex. The ion-to-electron transducer is made of poly(3-octylthiophene-2,5-diyl) and placed between an ion-selective membrane and the metallic tip. The ion-selective polyvinyl chloride-based me...
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Submicromolar to picomolar lower detection limits have recently been obtained with various polymer membrane ion-selective electrodes by minimizing biases due to ion fluxes through the membrane. For the best performance, the compositions of the membrane and inner solution should be optimized for each application. Given the number of parameters to be adjusted, it has been difficult to find the be...
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Potentiometric sensors that exhibit a non-Hofmeister selectivity sequence are normally designed by selective chemical recognition elements in the membrane. In other situations, when used as detectors in separation science, for example, membranes that respond equally to most ions are preferred. With so-called liquid membranes, a low selectivity is difficult to accomplish since these membranes ar...
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Introduction: The discovery of satellites in our solar system that generate enough internal energy to support liquid oceans below their icy crusts has started a series of questions related to the search for extraterrestrial life. The young surface age of Europa [1] suggests recent replenishment of the surface with material originating from the potentially habitable oceans underneath [2], thus m...
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ژورنال
عنوان ژورنال: Analytica Chimica Acta
سال: 2006
ISSN: 0003-2670
DOI: 10.1016/j.aca.2006.05.009