Determination of quantitative phenol in tap water samples as electrochemical using 3,3 '-diaminobenzidine modified glassy carbon sensor electrode
Küçük Resim Yok
Tarih
2011
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE BV
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this paper, the amount of phenol in Meram, Karatay and Selcuklu regions in Konya tap water samples was quantified in aqueous medium by using 3,3'-diaminobenzidine (DAB) modified glassy carbon (GC) electrode. The electrode surface was modified with DAB in 0.1 M tetrabutylammonium tetrafluoroborate (TBATFB) using 100 mV s(-1) scanning rate between -0.5 V and + 1.5 V with 10 cycles. For the calibration curve, a series of standard phenol solution between 1.0 x 10(-12) M and 1.0 x 10(-3) M was prepared using pH 12. The prepared standard solutions were used for the chemical binding of phenol to the modified electrode surface between 0.0 V and + 1.1 V potential range using 100 mV s(-1) scanning rate with 10 cycles. By using this calibration method, the amount of phenol was determined as 1.23 x 10(-10) M, 3.03 x 10(-8) M and 1.99 x 10(-9) M in natural tap water samples in Britton-Robinson (BR) buffer solution at pH 12. Detection limit was obtained as low as 1.0 x 10(-10) M. The presence of DAB, phenol at the GC surface and phenol of DAB modified GC electrode surface was characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
3,3 '-diaminobenzidine, Sensor electrode, Surface modification, Surface characterization, Electrochemical impedance spectroscopy
Kaynak
DESALINATION
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
268
Sayı
01.03.2020
