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Development of an amperometric assay for phosphate ions in urine based on a chemically modified screen-printed carbon electrode (2009)
Journal Article
Gilbert, L., Jenkins, A. T., Browning, S., & Hart, J. P. (2009). Development of an amperometric assay for phosphate ions in urine based on a chemically modified screen-printed carbon electrode. Analytical Biochemistry, 393(2), 242-247. https://doi.org/10.1016/j.ab.2009.06.038

An amperometric assay for the determination of inorganic phosphate (Pi) in urine has been developed without the need for sample preparation. A screen-printed carbon electrode modified with the electrocatalyst cobalt phthalocyanine (CoPC-SPCE) and cov... Read More about Development of an amperometric assay for phosphate ions in urine based on a chemically modified screen-printed carbon electrode.

The electrochemical behavior of nitrazepam at a screen-printed carbon electrode and its determination in beverages by adsorptive stripping voltammetry (2009)
Journal Article
McGuire, N. D., Honeychurch, K. C., & Hart, J. P. (2009). The electrochemical behavior of nitrazepam at a screen-printed carbon electrode and its determination in beverages by adsorptive stripping voltammetry. Electroanalysis, 21(19), 2165-2170. https://doi.org/10.1002/elan.200904667

The cyclic voltammetric behavior of nitrazepam was investigated at screen-printed carbon electrodes over the range1.5 V to {thorn}1.5 V. Two reduction peaks were observable on the negative scan, at 0.7 V, and 1.2 V using pH 6 buffer. On the return sc... Read More about The electrochemical behavior of nitrazepam at a screen-printed carbon electrode and its determination in beverages by adsorptive stripping voltammetry.

Application of screen-printed microband biosensors to end-point measurements of glucose and cell numbers in HepG2 cell culture (2009)
Journal Article
Jackson, S. K., Pemberton, R., Xu, J., Pittson, R., Biddle, N., Drago, G. A., & Hart, J. P. (2009). Application of screen-printed microband biosensors to end-point measurements of glucose and cell numbers in HepG2 cell culture. Analytical Biochemistry, 385(2), 334-341. https://doi.org/10.1016/j.ab.2008.10.037

Microband glucose biosensors were produced by insulating and sectioning through a screen-printed, water-based carbon electrode containing cobalt phthalocyanine redox mediator and glucose oxidase enzyme. Under quiescent conditions at 37 °C, at an oper... Read More about Application of screen-printed microband biosensors to end-point measurements of glucose and cell numbers in HepG2 cell culture.

A microband lactate biosensor fabricated using a water-based screen-printed carbon ink (2009)
Journal Article
Rawson, F. J., Purcell, W. M., Xu, J., Pemberton, R., Fielden, P. R., Biddle, N., & Hart, J. P. (2009). A microband lactate biosensor fabricated using a water-based screen-printed carbon ink. Talanta, 77(3), 1149-1154. https://doi.org/10.1016/j.talanta.2008.08.020

The present study demonstrated for the first time that screen-printed carbon microband electrodes fabricated from water-based ink can readily detect H2O2 and that the same ink, with the addition of lactate oxidase, can be used to construct microband... Read More about A microband lactate biosensor fabricated using a water-based screen-printed carbon ink.

Fabrication of microband glucose biosensors using a screen-printing water-based carbon ink and their application in serum analysis (2009)
Journal Article
Pemberton, R., Pittson, R., Biddle, N., & Hart, J. P. (2009). Fabrication of microband glucose biosensors using a screen-printing water-based carbon ink and their application in serum analysis. Biosensors and Bioelectronics, 24(5), 1246-1252. https://doi.org/10.1016/j.bios.2008.07.035

Microband glucose biosensors were fabricated by screen-printing a water-based carbon ink formulation containing cobalt phthalocyanine redox mediator and glucose oxidase (GOD) enzyme, then insulating and sectioning through the thick (20 μm) film to ex... Read More about Fabrication of microband glucose biosensors using a screen-printing water-based carbon ink and their application in serum analysis.

Determination of flunitrazepam and nitrazepam in beverage samples by liquid chromatography with dual electrode detection using a carbon fibre veil electrode (2008)
Journal Article
Honeychurch, K. C., & Hart, J. P. (2008). Determination of flunitrazepam and nitrazepam in beverage samples by liquid chromatography with dual electrode detection using a carbon fibre veil electrode. Journal of Solid State Electrochemistry, 12(10), 1317-1324. https://doi.org/10.1007/s10008-008-0536-0

Both nitrazepam and flunitrazepam have been determined by high-performance liquid chromatography dual electrode detection (LC-DED) in the reductive-reductive mode, using a carbon fibre veil electrode (CFVE) in conjugation with a glassy carbon electro... Read More about Determination of flunitrazepam and nitrazepam in beverage samples by liquid chromatography with dual electrode detection using a carbon fibre veil electrode.

Development of an anodic stripping voltammetric assay, using a disposable mercury-free screen-printed carbon electrode, for the determination of zinc in human sweat (2008)
Journal Article
Cowell, D. C., Crew, A. P., & Hart, J. P. (2008). Development of an anodic stripping voltammetric assay, using a disposable mercury-free screen-printed carbon electrode, for the determination of zinc in human sweat. Talanta, 75(5), 1221-1226. https://doi.org/10.1016/j.talanta.2008.01.043

This paper reports on the development of a novel electrochemical assay for Zn2+ in human sweat, which involves the use of disposable screen-printed carbon electrodes (SPCEs). Initially, SPCEs were used in conjunction with cyclic voltammetry to study... Read More about Development of an anodic stripping voltammetric assay, using a disposable mercury-free screen-printed carbon electrode, for the determination of zinc in human sweat.

Chapter 23 Screen-printed electrochemical (bio)sensors in biomedical, environmental and industrial applications (2007)
Journal Article
Hart, J. P., Crew, A., Crouch, E., Honeychurch, K. C., & Pemberton, R. (2007). Chapter 23 Screen-printed electrochemical (bio)sensors in biomedical, environmental and industrial applications. https://doi.org/10.1016/S0166-526X%2806%2949023-1

This chapter describes a number of approaches for the fabrication of prototype screen-printed electrochemical (bio) sensors together with selected applications in the areas of biomedical, environmental and industrial analyses. Novel methods of immobi... Read More about Chapter 23 Screen-printed electrochemical (bio)sensors in biomedical, environmental and industrial applications.

Voltammetric behavior of p-nitrophenol and its trace determination in human urine by liquid chromatography with a dual reductive mode electrochemical detection system (2007)
Journal Article
Honeychurch, K. C., & Hart, J. P. (2007). Voltammetric behavior of p-nitrophenol and its trace determination in human urine by liquid chromatography with a dual reductive mode electrochemical detection system. Electroanalysis, 19(21), 2176-2184. https://doi.org/10.1002/elan.200703989

The determination of trace p-nitrophenol (PNP) concentrations in human urine has been successfully achieved by high performance liquid chromatography dual electrode detection (LC-DED) in the reduction-reduction mode. Initial cyclic voltammetric studi... Read More about Voltammetric behavior of p-nitrophenol and its trace determination in human urine by liquid chromatography with a dual reductive mode electrochemical detection system.

Voltammetric behaviour of p-nitrophenol and its trace determination in human urine by liquid chromatography with a dual reductive mode electrochemical detection system (2007)
Journal Article
Honeychurch, K. C., & Hart, J. P. (2007). Voltammetric behaviour of p-nitrophenol and its trace determination in human urine by liquid chromatography with a dual reductive mode electrochemical detection system. Electroanalysis, 19(21), 2176-2184. https://doi.org/10.1002/elan.200703989

The determination of trace p-nitrophenol (PNP) concentrations in human urine has been successfully achieved by high performance liquid chromatography dual electrode detection (LC-DED) in the reduction-reduction mode. Initial cyclic voltammetric studi... Read More about Voltammetric behaviour of p-nitrophenol and its trace determination in human urine by liquid chromatography with a dual reductive mode electrochemical detection system.

Development of a novel electrochemical immuno-assay using a screen printed electrode for the determination of secretory immunoglobulin A in human sweat (2007)
Journal Article
Cowell, D. C., Crew, A. P., Alford, C., & Hart, J. P. (2007). Development of a novel electrochemical immuno-assay using a screen printed electrode for the determination of secretory immunoglobulin A in human sweat. Electrochimica Acta, 52(16), 5232-5237. https://doi.org/10.1016/j.electacta.2007.02.035

This paper reports on the steps involved in the development of a novel electrochemical immunoassay for secretory immunoglobulin A (sIgA) determinations in human sweat. This novel immunoassay involves an initial step whereby sweat sIgA is adsorbed ont... Read More about Development of a novel electrochemical immuno-assay using a screen printed electrode for the determination of secretory immunoglobulin A in human sweat.

Voltammetric behaviour of DNA bases at a screen-printed carbon electrode and its application to a simple and rapid voltammetric method for the determination of oxidative damage in double stranded DNA (2007)
Journal Article
O'Donovan, M. R., Honeychurch, K. C., & Hart, J. P. (2007). Voltammetric behaviour of DNA bases at a screen-printed carbon electrode and its application to a simple and rapid voltammetric method for the determination of oxidative damage in double stranded DNA. Biosensors and Bioelectronics, 22(9-10), 2057-2064. https://doi.org/10.1016/j.bios.2006.09.019

Screen-printed carbon electrodes (SPCEs) have been investigated as possible sensors to identify γ-irradiation induced oxidative damage in double stranded (ds) DNA. Studies were undertaken to explore the possibility of using both cyclic voltammetry an... Read More about Voltammetric behaviour of DNA bases at a screen-printed carbon electrode and its application to a simple and rapid voltammetric method for the determination of oxidative damage in double stranded DNA.

Selective and rapid biosensor integrated into a commercial hand-held instrument for the measurement of ammonium ion in sewage effluent (2006)
Journal Article
Hart, J. P., Serban, S., Jones, L. J., Biddle, N., Pittson, R., & Drago, G. A. (2006). Selective and rapid biosensor integrated into a commercial hand-held instrument for the measurement of ammonium ion in sewage effluent. Analytical Letters, 39(8), 1657-1667. https://doi.org/10.1080/00032710600713545

A disposable biosensor for ammonium ions in sewage effluent was developed and based on a screen-printed carbon electrode coated with the enzyme glutamate dehydrogenase, 2-oxoglutarate, and NADH. This rapid and selective amperometric biosensor is capa... Read More about Selective and rapid biosensor integrated into a commercial hand-held instrument for the measurement of ammonium ion in sewage effluent.

Studies towards the development of a screen-printed carbon electrochemical immunosensor array for mycotoxins: A sensor for aflatoxin B1 (2006)
Journal Article
Pemberton, R., Pittson, R., Biddle, N., Drago, G. A., & Hart, J. P. (2006). Studies towards the development of a screen-printed carbon electrochemical immunosensor array for mycotoxins: A sensor for aflatoxin B1. Analytical Letters, 39(8), 1573-1586. https://doi.org/10.1080/00032710600713289

Screen-printed carbon electrodes (SPCEs) bearing a surface-adsorbed antibody against aflatoxin B1 (AFB1) were used in a competitive immunoassay, based on competition of free analyte with a biotinylated aflatoxin B1 conjugate. Subsequent addition of s... Read More about Studies towards the development of a screen-printed carbon electrochemical immunosensor array for mycotoxins: A sensor for aflatoxin B1.

Voltammetric behavior of nitrazepam and its determination in serum using liquid chromatography with redox mode dual-electrode detection (2006)
Journal Article
Honeychurch, K. C., Smith, G. C., & Hart, J. P. (2006). Voltammetric behavior of nitrazepam and its determination in serum using liquid chromatography with redox mode dual-electrode detection. Analytical Chemistry, 78(2), 416-423. https://doi.org/10.1021/ac058035a

A method involving high-performance liquid chromatography with dual-electrode electrochemical detection in the redox mode (LC-DED) has been successfully developed for the determination of the benzodiazepine tranquilizer, nitrazepam, in serum. To eluc... Read More about Voltammetric behavior of nitrazepam and its determination in serum using liquid chromatography with redox mode dual-electrode detection.

Amperometric, screen-printed, glucose biosensor for analysis of human plasma samples using a biocomposite water-based carbon ink incorporating glucose oxidase (2005)
Journal Article
Crouch, E., Cowell, D. C., Hoskins, S., Pittson, R. W., & Hart, J. P. (2005). Amperometric, screen-printed, glucose biosensor for analysis of human plasma samples using a biocomposite water-based carbon ink incorporating glucose oxidase. Analytical Biochemistry, 347(1), 17-23. https://doi.org/10.1016/j.ab.2005.08.011

This paper describes the optimisation of a screen-printing water-based carbon ink containing cobalt phthalocyanine (CoPC) and glucose oxidase (GOD) for the fabrication of a glucose biosensor. To optimise the performance of the biosensor, the loadings... Read More about Amperometric, screen-printed, glucose biosensor for analysis of human plasma samples using a biocomposite water-based carbon ink incorporating glucose oxidase.

A novel, disposable, screen-printed amperometric biosensor for glucose in serum fabricated using a water-based carbon ink (2005)
Journal Article
Pittson, R. W., Cowell, D. C., Crouch, E., Hoskins, S., & Hart, J. P. (2005). A novel, disposable, screen-printed amperometric biosensor for glucose in serum fabricated using a water-based carbon ink. Biosensors and Bioelectronics, 21(5), 712-718. https://doi.org/10.1016/j.bios.2005.01.003

Screen-printed amperometric glucose biosensors have been fabricated using a water-based carbon ink. The enzyme glucose oxidase (GOD) and the electrocatalyst cobalt phthalocyanine were mixed with the carbon ink prior to the screen-printing process; th... Read More about A novel, disposable, screen-printed amperometric biosensor for glucose in serum fabricated using a water-based carbon ink.

Amino acid determination using screen-printed electrochemical sensors (2005)
Journal Article
Merkoçi, A., Vasjari, M., Hart, J. P., & Alegret, S. (2005). Amino acid determination using screen-printed electrochemical sensors. Microchimica Acta, 150(3-4), 233-238. https://doi.org/10.1007/s00604-005-0361-4

The use of a screen-printed electrochemical sensor (SPES) strip, consisting of a two-electrode system (a carbon working electrode and Ag/AgCl reference electrode), for amino acid determination is reported. The behaviour of the SPES toward cysteine an... Read More about Amino acid determination using screen-printed electrochemical sensors.