Chlorella Modified Glassy Carbon Electrode as Whole Cell Microbial Sensor for Heavy Metal Ions

Susheel K. Mittal; J. Singh; Ashok Kumar SK

doi:10.2174/157341112801264932

ISSN: 1573-4110
E-ISSN: 1875-6727

Chlorella Modified Glassy Carbon Electrode as Whole Cell Microbial Sensor for Heavy Metal Ions
By Susheel K. Mittal, J. Singh and Ashok Kumar SK
Source: Current Analytical Chemistry, Volume 8, Issue 3, Jul 2012, p. 365 - 372
DOI: https://doi.org/10.2174/157341112801264932
- Available online: 01 Jul 2012

Abstract

A whole cell based biosensor is prepared by immobilizing Chlorella sp. microbes over glassy carbon electrode. The proposed biosensor is optimized for characteristics like; substrate concentration, pH, response time, durability, etc. The electrode responds linearly in concentration range of 10-14 M to 10-6 M for zinc, copper, cadmium, cobalt and nickel ions. Relative selectivity of the metal ions can be ordered in following sequence: Zn2+ >> Cu2+ ≈ Cd2+ > Co2+ > Ni2+. The biosensor has a life time of 14 days, after which, its analytical properties do not remain stable.

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2012-07-01

2025-05-06

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Article Type: Research Article

Keyword(s): Atomic absorbtion spectrometry; biosensor; bovine serum albumin; Chlorella sp; chronoamperometry; glassy carbon electrode; glutaraldehyde; heavy metal ions; immobilization; interference; real life samples; ultra- trace level measurement

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Chlorella Modified Glassy Carbon Electrode as Whole Cell Microbial Sensor for Heavy Metal Ions

Abstract

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