Orthogonal Array Design for the Optimization of Solvent-Assisted Dispersive Solid Phase Extraction for the Determination of Copper Ions in Water and Vegetable Food Samples using Flame Atomic Absorption Spectrometry
Davood Kaviani1, Majid Saghi2, Maryam Sabonian3, Mohammad Hosein Bigtan4, Behzad Padidaran5

1Davood Kaviani, Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran.
2Majid Saghi, Department of chemistry, Arak branch, Islamic Azad University, Arak,
3Maryam Sabonian, Department of chemistry, Arak branch, Islamic Azad University, Arak, Iran.
4Mohammad Hosein Bigtan, Department of chemistry, Arak branch, Islamic Azad University, Arak, Iran.
5Behzad Padidaran, Education, Maneh and Samalqan, North Khorasan, Iran.

Manuscript received on 15 October 2015 | Revised Manuscript received on 25 October 2015 | Manuscript Published on 30 October 2015 | PP: 52-56 | Volume-5 Issue-1, October 2015 | Retrieval Number: A4274105115/15©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: A simple and efficient dispersive solid -phase micro extraction technique was developed and combined with flame atomic absorption spectrometry, for the extraction and determination of trace amounts of copper in real samples.2- (5Bromo-2-pyridylazol)-5-(diethyl amino)-phenol (5-Br-PADAP) was used as chelating agent and banzophenon was selected as extraction solvent. Several possible influential factors such as the type and amount of extraction solvent, amount of autistic agent, sample pH, were optimized using orthogonal array design (OAD) with OA16(4)5 matrix. Under optimum conditions, an enrichment factor of 13 was obtained. The analytical curves were linear between 5-2000 μg L-1 . Based on three SD of the blank, the detection limits was 1.2 μg L-1 . The relative SDs for eight replicate measurements of 100 μg L-1 of metal ions was 3.2%. The proposed method was successfully applied for determination of copper in environmental waters and some vegetable samples including Pepper, Tomato, Thyme, Aloe vera gel, Morus.
Keywords: Solvent-Assisted Dispersive Solid Phase Extraction, Copper (II), Flame Atomic Absorption Spectrometry, Food and Environmental Water Samples

Scope of the Article: Environmental Engineering