Development of biosorption-based algal biosensor for Cu(II) using Tetraselmis chuii

Küçük Resim Yok

Tarih

2007

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

A new biosorption-based biosensor using Tetraselmis chuii microalgae was developed for the voltammetric measurement of copper(II). Biosensor was prepared by incorporating non-living biomass in carbon paste. T. chuii incorporated in carbon paste electrodes (CPE) in weight percentages ranging from 2.5 to 20 accumulate copper(II) from solution through passive adsorption. Copper(II) was accumulated, at open circuit, on the algal biosensor and the voltammetric measurements were carried out by differential pulse cathodic stripping voltammetry. The biosensor performance was optimized with respect to the operating conditions. Under the optimal conditions, a detection limit of 4.6 × 10-10 M was obtained with a good precision (R.S.D. = 3.4%, n = 6). The cathodic peak current was linear with concentration in the range of 5.0 × 10-8-1.0 × 10-6 M (r = 0.9981). The developed biosensor was also applied for the determination of copper(II) in real sample. Such an excellent performance of the algal biosensor toward copper(II), represents a very good alternative for developing other sensors. © 2007 Elsevier B.V. All rights reserved.

Açıklama

Anahtar Kelimeler

Biosensor, Biosorption, Copper, Microalgae, Tetraselmis chuii, Voltammetry

Kaynak

Sensors and Actuators, B: Chemical

WoS Q Değeri

Scopus Q Değeri

Q1

Cilt

128

Sayı

1

Künye