Highly selective trace level detection of Atrazine in human blood samples using lead-free double perovskite Al2NiCoO5 modified electrode via differential pulse voltammetry

Durai, Lignesh and Badhulika, Sushmee (2020) Highly selective trace level detection of Atrazine in human blood samples using lead-free double perovskite Al2NiCoO5 modified electrode via differential pulse voltammetry. Sensors and Actuators B: Chemical, 325. p. 128792. ISSN 09254005

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Abstract

In this work, we demonstrate trace level electrochemical detection of atrazine in human blood serum samples based on lead-free double perovskite material Al2NiCoO5 (ANCO) modified glassy carbon electrode (GCE). The SEM micrographs confirm the nanoflakes morphology of the ANCO synthesized via solid-state technique while XRD, Raman and FTIR analysis reveal the crystal structure, vibrational modes and the existence of OH− groups at the surface area of the ANCO nanoflakes. The as-fabricated ANCO/GCE exhibits a low limit of detection (LOD) of 0.3 ppb and a linear range of 0.5 ppb – 100 ppb atrazine with a sensitivity of 0.929 μA/ppb cm2. This enhanced performance of ANOC/GCE is ascribed to the electrocatalytic active sites of ANOC nanoflakes facilitated with Ni2+/Ni3+ and Co2+/Co3+ redox couple along with the oxy functional groups. The sensor exhibits an outstanding selectivity towards atrazine in presence of 100 folds of Na+, Ca2+, bovine serum albumin (BSA) and human serum albumin (HSA). The sensor is successful in the detection of atrazine in human blood serum samples with outstanding recovery percentages from ∼97.05 to ∼103.27 % thus making it an ideal platform for developing a wide range of electroanalytical sensors in biological samples.

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IITH Creators:
IITH CreatorsORCiD
Durai, LigneshUNSPECIFIED
Badhulika, SushmeeUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Bovine serum albumins; Differential pulse voltammetry; ELectrochemical detection; Human serum albumins; Modified glassy carbon electrode; Recovery percentages; Solid state technique; Trace-level detection Engineering main heading
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 05 Aug 2021 04:41
Last Modified: 05 Aug 2021 04:41
URI: http://raiithold.iith.ac.in/id/eprint/8672
Publisher URL: http://doi.org/10.1016/j.snb.2020.128792
OA policy: https://v2.sherpa.ac.uk/id/publication/16792
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