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Amplayererometric detection of carbohydrates based on the glassy carbon electrode modified with gold nano-flake

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An electro-deposition approach was established to incorporate the gold nano-flakes onto the glassy carbon
electrode in electrochemical cells (nano-Au/GC/ECCs). Using pulsed amperometric detection (PAD)
without any gold oxidation for cleaning (non-oxidative PAD), the nano-Au/GC/ECCs were able to maintain
their activity for oxidizing of carbohydrates in a normal alkaline medium. The reproducibility of peak area
was about 2 relative standard deviation (RSD,%) for 6 consecutive injections. A dynamic range of carbohydrates
was obtained over a concentration range of 5–80 mg L-1 and the limits of detection (LOD) were
of 2 mg L-1 for fructose and lactose and 1 mg L-1 for glucose and galactose. Moreover, the
nano-Au/GC/ECC using the non-oxidative PAD was able to combine with the internal standard method
for determination of lactose in fresh cow milk sample.

Keywords:
Pulsed amperometric detection
Gold nano-flake
Electrochemical cell
Carbohydrate

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Informasi Detail

Judul Seri

Analytical Chemistry Research

No. Panggil

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Penerbit

New York : Elsevier B.V. This is an open access article under the CC BY-NC-ND., 2015

Deskripsi Fisik

Analytical Chemistry Research 5 (2015) 14–20

Bahasa

English

ISBN/ISSN

http://dx.doi.org/10

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

5 (2015)

Subjek

KIMIA ANALITIK

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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