1,721,128 research outputs found
Heavy metals determination by biosensors based on enzyme immobilised by electropolymerisation
No full textThe work describes the original application of biosensors based on enzyme immobilised by electropolymerisation to heavy metal determination.
An inhibition detection scheme has been employed for detecting Hg2+ by an established glucose biosensor based on glucose oxidase
immobilised in poly-o-phenylenediamine. The investigated enzymatic inhibition appears reversible and mixed, in agreement with data for
the enzyme in solution. A low response time (<2 min) and a rapid recovery of response by EDTA seem the most interesting characteristics
of the proposed biosensor at the present stage of development, along with the well known easy preparation of this kind of biosensors. The
occurrence of a high response also for Cu2+ opens the possibility to apply the biosensor in total toxic metal content determination
Determinazione di Hg++ mediante un biosensore basato su enzima immobilizzato elettrochimicamente
No full textAnalytical application of an amperometric biosensor based on glucose oxidase inhibition for the determination of heavy metal ions
No full textItinerario Rosa, Tavola Rotonda sul tema «Quando la tecnologia imita la natura: anche fra macchina e corpo l’integrazione nasce dal dialogo» I progressi della biosensoristica applicata alla medicina.
No full textLa manifestazione è organizzata ogni anno dal Comune di Lecce per la valorizzazione il ruolo sociale e culturale della donna. https://www.comune.lecce.it/news/2017/02/27/tutti-gli-eventi-in-programma-per-itinerario-rosa La tavola rotonda è stata inserita dalla settimana della cultura scientifica dell'Università del Salent
Caratterizzazione Spettroscopica XPS ed Elettrochimica di Film Langmuir-Schäfer Basati Su 2-Cloroetossi-Ferro-Etilsulfanilporfirazina
No full textElectrocatalysis of ascorbic acid on the glassy carbon electrode chemically modified with polyaniline films
No full textScreen-printed glucose oxidase-based biosensor for inhibitive detection of heavy metal ions in a flow injection system
No full textA screen-printed electrode amperometric biosensor based on glucose oxidase was successfully
used for the inhibitive detection of a wide set of heavy metal ions (Hg2+, Ag+, Cu2+, Cd2+, Co2+,
Ni2+) in a flow-injection system. The present work represents a successful way of combining advantages
coming from Flow Injection Analysis (FIA) with ones deriving from the use of screen-printing
technology in the development of an enzyme inhibition based biosensor. One of the most novel
and attractive features of the developed system is the easy and rapid response recovery that does
not require any treatment with regenerating reagents. Moreover, sensor response was satisfactory
in terms of linear range, limit of detection (LOD), sensitivity and standard deviation. In particular,
Hg2+, Cu2+, Cd2+, Co2+, Ni2+ have been successfully revealed at ppm concentration while LOD for
Ag+ is in the ppb range. Also the application of the system in glucose detection was satisfactory.
Glucose concentrations in the range 0.5–50 mM were detected and sensor response to glucose
10 mM revealed to be stable for 4 hours analysis after being subject to 20 subsequent injections
DEVELOPMENT AND CHARACTERIZATION OF A NOVEL ANTIBACTERIAL MATERIAL BASED ON GOx IMMOBILIZED IN A PVA FILM
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