Malaysian Journal of Analytical Sciences Vol 19 No 3 (2015): 454 – 462

 

 

 

VOLTAMMETRIC ANALYSIS OF REACTIVE BLACK 5 DYE: INTERFERENCE STUDIES BY HEAVY METALS AND OTHER

AZO DYES

 

(Analisis Voltammetrik Terhadap Pewarna Reaktif Black 5: Kesan Gangguan Logam Berat dan Pewarna Azo yang Lain)

 

Nur Syamimi Zainudin^1,2, Mohamad Hadzri Yaacob¹*, Noor Zuhartini Md Muslim¹, Zulkhairi Othman¹

 

¹Forensic Science Programme, School of Health Sciences,

Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia

²Faculty of Applied Science,

Universiti Teknologi MARA (Pahang), Lintasan Semarak Bandar Tun Abdul Razak Jengka, Pahang, Malaysia

 

*Corresponding author: hadzri@usm.my

 

 

Received: 10 February 2015; Accepted: 5 March 2015

 

 

Abstract

The studies of any possiblity that heavy metals such as copper (Cu), lead (Pb), cadmium (Cd), chromium (Cr), iron (Fe), zinc (Zn), manganese (Mn) and nickel (Ni) and other azo dyes such as Reactive Orange 16, Red 106 and Yellow 42 will interfere the measurement of RB5 using the differential pulse cathodic stripping voltammetry (DPCSV) technique are described. This study is a part of method development for voltammetric determination of RB5 which will be used to analyze wastewaters from batik industry. A 2 mg/L RB5 was firstly scanned under the optimum parameters, followed by addition of a series of concentration from 2 to 5 mg/L of each metals and other reactive azo dyes standard solutions into voltammetric cell containing 2 mg/L RB5. Results show that the present of 2 mg/L Fe, 3 mg/L Cu  and more than 3 mg/L Ni, Mn, Pb, Cd, Zn and Cr have interfered the measurement of 2 mg/L RB5. All azo dyes at 2 mg/L level interfered the measurement of RB5.

 

Keywords: Reactive Black 5, interference study, heavy metals, reactive azo dye

 

Abstrak

Kajian mengenai kemungkinan logam berat seperti kuprum (Cu), plumbum (Pb), kadmium (Cd), kromium (Cr), besi (Fe), zink (Zn), mangan (Mn) dan nikel (Ni) serta pewarna azo yang lain seperti Reaktif Orange 16, Red 106 and Yellow 42 mengganggu pengukuran RB5 menggunakan teknik Differential Pulse Cathodic Stripping Voltammetry (DPCSV) diterangkan. Kajian ini sebahagian daripada pembangunan kaedah voltammetrik yang akan digunakan dalam penentuan voltammetrik RB5 di dalam air sisa dari industri batik. Pada awalnya, RB5 yang berkepekatan 2 mg/L diimbas menggunakan parameter-parameter optima dan diikuti pengimbasan setiap logam berat dan pewarna azo reaktif lain yang ditambah dengan siri kepekatan 2 sehingga 5 mg/L yang dimasukkan ke dalam sel voltammetrik yang mengandungi 2 mg/L RB5. Keputusan menunjukkan kehadiran 2 mg/L besi, 3 mg/L kuprum dan lebih daripada 3 mg/L Ni, Mn, Pb, Cd, Zn and Cr mengganggu pengukuran 2 mg/L RB5. Semua pewarna reaktif pada kepekatan 2 mg/L mengganggu pengukuran RB5.

 

Keywords: Reaktif Black 5, kesan gangguan, logam berat, pewarna reaktif azo

 

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