title: Integrated multi-sensor chip with photocured polymer membranes containing copolymerized plasticizer for direct pH, potassium, sodium and chloride ions determination in blood serum.
abstract: An analytical system based on a sensor array with ion-selective field effect transistors (ISFETs) monolithically integrated in one chip covered with photocured polymer membranes containing copolymerized plasticizer and a sequential injection analysis (SIA) is shown to offer an automation of the analysis of blood serum components. For sequential injection system a custom made dual channel flow cell for the sensor array was developed. Optimisation of ion-sensitive membrane characteristics and calibration solution compositions were carried out. The system was used to analyze sodium, potassium, chloride ion contents in blood serum samples. The precision of the ion determination in samples was typical for potentiometric method with standard deviation of about 3-5%.
authors.affiliation: Chemical Transducers Group, Instituto de Microelectrónica de Barcelona, Centro Nacional de Microelectrónica (CSIC), Campus UAB, Bellaterra E-08193, Barcelona, Spain.
authors.forename: Natalia
authors.initials: N
authors.lastname: Abramova
authors.forename: Andrey
authors.initials: A
authors.lastname: Ipatov
authors.forename: Sergey
authors.initials: S
authors.lastname: Levichev
authors.forename: Andrey
authors.initials: A
authors.lastname: Bratov
mesh_terms: D001774:Blood Chemical Analysis / Q000295:instrumentation* / Q000379:methods; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D002712:Chlorides / Q000097:blood; D017022:Flow Injection Analysis; D006863:Hydrogen-Ion Concentration; D008567:Membranes, Artificial; D055668:Photochemical Processes; D010968:Plasticizers / Q000737:chemistry*; D011140:Polyurethanes / Q000737:chemistry*; D011188:Potassium / Q000097:blood; D012964:Sodium / Q000097:blood; D018511:Systems Integration; D013997:Time Factors
chemical_list: D002712:Chlorides; D008567:Membranes, Artificial; D010968:Plasticizers; D011140:Polyurethanes; D012964:Sodium; D011188:Potassium