The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Layered-structure Bi2W2O9 powders synthesized by conventional solid-state reaction and treated by ball milling have been used to create an electrode for a mixed-potential-type NO2 sensor with yttria-stabilized zirconia as an oxygen ion conductor. This sensor was found to provide good sensitivity to NO2 at 500 °C, thanks to the grain refinement induced by ball milling. The electromotive force generated...
An uncomplicated method for the detection of organophosphorous pesticide characterized by a thione moiety (P = S) was developed, and chlorpyrifos was used as an example. It was based on the detection of thiocholine generated by acetylcholinesterase. Organophosphorothionates slightly inhibited acetylcholinesterase, and P = S in chlorpyrifos was oxidized into P = O to improve the toxicity. Optimized...
A simple and fast electroanalytical method for the detection of nitrate at an in situ copper-modified glassy carbon electrode (GCE) in an acidic media is proposed on the basis of square wave voltammetry. Since the fresh copper-modified electrode was formed in situ and the signals of nitrate were recorded in time, the whole experiment does not require sample preparation and oxygen removal from the...
In this paper, a novel polyelectrolyte multilayer (PEM) film-coated platinum electrode for the selective detection of H2O2 was presented. The PEM film was formed by the layer-by-layer assembly technique. The quartz crystal microbalance experiments showed that the thickness of the prepared Nafion layer was about 8 nm and depended on the pH of poly(allylamine hydrochloride) solution. The combination...
A highly selective, sensitive, fast, and stable amperometric sensor for the determination of hydrogen peroxide residues in aseptic milk is presented. To fabricate this amperometric sensor, a thin film of Prussian blue was first electrodeposited on a glassy carbon electrode and then a Nafion polymer layer was formed on the top. It was found that Nafion film greatly improves the anti-interference ability...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.