Nano zinc ferrite modified electrode as a novel electrochemical sensing platform in simultaneous measurement of trace level lead and cadmium

2018 ◽  
Vol 6 (6) ◽  
pp. 6939-6946 ◽  
Author(s):  
Arun Kumar NS ◽  
Ashoka S ◽  
Pandurangappa Malingappa
Keyword(s):  
Modified Electrode ◽  
Simultaneous Measurement ◽  
Zinc Ferrite ◽  
Electrochemical Sensing ◽  
Trace Level ◽  
Lead And Cadmium ◽  
Sensing Platform ◽  
Nano Zinc

scholarly journals Paper-Based Competitive Immunochromatography Coupled with an Enzyme-Modified Electrode to Enable the Wireless Monitoring and Electrochemical Sensing of Cotinine in Urine

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1659
Author(s):  
Nutcha Larpant ◽  
Pramod K. Kalambate ◽  
Tautgirdas Ruzgas ◽  
Wanida Laiwattanapaisal
Keyword(s):  
Glucose Oxidase ◽  
Modified Electrode ◽  
Near Field ◽  
Electrochemical Measurement ◽  
Electrochemical Sensing ◽  
Urine Samples ◽  
Lateral Flow Strip ◽  
Wireless Monitoring ◽  
Sensing Platform ◽  
Combined Strategy

This paper proposes a combined strategy of using paper-based competitive immunochromatography and a near field communication (NFC) tag for wireless cotinine determination. The glucose oxidase labeled cotinine antibody specifically binds free cotinine in a sample, whereas the unoccupied antibody attached to BSA-cotinine at the test line on a lateral flow strip. The glucose oxidase on the strip and an assistant pad in the presence of glucose generated H2O2 and imposed the Ag oxidation on the modified electrode. This enabled monitoring of immunoreaction by either electrochemical measurement or wireless detection. Wireless sensing was realized for cotinine in the range of 100–1000 ng/mL (R2 = 0.96) in PBS medium. Undiluted urine samples from non-smokers exhibited an Ag-oxidation rate three times higher than the smoker’s urine samples. For 1:8 diluted urine samples (smokers), the proposed paper-based competitive immunochromatography coupled with an enzyme-modified electrode differentiated positive and negative samples and exhibited cotinine discrimination at levels higher than 12 ng/mL. This novel sensing platform can potentially be combined with a smartphone as a reader unit.

An Electrochemical Sensing Platform for the Trace Level Detection of Copper

2017 ◽  
Vol 164 (6) ◽  
pp. B184-B188 ◽  
Author(s):  
Afzal Shah ◽  
Sundus Sultan ◽  
Aamir Hassan Shah ◽  
Saira Nayab ◽  
Gul Shahzada Khan ◽  
...  
Keyword(s):  
Electrochemical Sensing ◽  
Trace Level ◽  
Sensing Platform

Porous Carbon Modified Electrode as a Highly-sensitive Electrochemical Sensing Platform for Salvianolic Acid B

2015 ◽  
Vol 28 (1) ◽  
pp. 235-242
Author(s):  
Qin Cheng ◽  
Miao Zhang ◽  
Wensheng Huang ◽  
Piaopiao Wei ◽  
Kangbing Wu
Keyword(s):  
Modified Electrode ◽  
Porous Carbon ◽  
Salvianolic Acid B ◽  
Electrochemical Sensing ◽  
Salvianolic Acid ◽  
Sensing Platform ◽  
Highly Sensitive

scholarly journals Development of a Highly Sensitive Electrochemical Sensing Platform for the Trace Level Detection of Lead Ions

2019 ◽  
Vol 166 (9) ◽  
pp. B3136-B3142 ◽  
Author(s):  
Afzal Shah ◽  
Anum Zahid ◽  
Amjad Khan ◽  
Faiza Jan Iftikhar ◽  
Jan Nisar ◽  
...  
Keyword(s):  
Electrochemical Sensing ◽  
Lead Ions ◽  
Trace Level ◽  
Sensing Platform ◽  
Highly Sensitive
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