GREEN VORTEX-ASSISTED IONIC LIQUID-BASED DISPERSIVE LIQUID-LIQUID MICROEXTRACTION FOR ENRICHMENT AND DETERMINATION OF CADMIUM AND LEAD IN WATER, VEGETABLES AND TOBACCO SAMPLES

RAGAA EL-SHEIKH; WAFAA S. HASSAN; SARA H. IBRAHIM; AMIRA M. YOUSSEF; AYMAN A. GOUDA

doi:10.22159/ijap.2020v12i5.38176

Authors

RAGAA EL-SHEIKH Chemistry Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt
WAFAA S. HASSAN Analytical Chemistry Department, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
SARA H. IBRAHIM hemistry Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt
AMIRA M. YOUSSEF hemistry Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt
AYMAN A. GOUDA Chemistry Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt, Occupational Health Department, Faculty of Public Health and Health Informatics, Umm AL-Qura University, Makkah, Saudi Arabia

DOI:

https://doi.org/10.22159/ijap.2020v12i5.38176

Keywords:

Cadmium, Lead, Vortex-assisted, Ionic liquid, Microextraction, Water, Vegetables and tobacco samples

Abstract

Objective: An eco-friendly, simple and sensitive vortex-assisted ionic liquid-based dispersive liquid-liquid microextraction method (VA-IL-DLLµE) has been proposed to enrich and determine trace levels of cadmium (Cd²⁺) and lead (Pb²⁺) ions in water, vegetables and tobacco samples, prior to its FAAS determination.

Methods: The proposed method based on utilization of ionic liquid (IL) (1-hexyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate [HMIM][FAP]) as an extraction solvent for both ions after the complexation with 4,5-dihydroxy-3-phenylazo-2,7-naphthalenedisulfonic acid, disodium salt (Chromotrope 2R) at pH 6.5. The impact of different analytical parameters on microextraction efficiency was optimized.

Results: In the ranges of 1.0–300 and 2.0-400 μg/ml, the calibration graphs were linear. The limits of detection were 0.3 and 0.6 μg/ml for Cd²⁺and Pb²⁺ions, respectively. The preconcentration factor was 100. The relative standard deviation (RSD %)<3.0%, which indicates the proposed method has high precision.

Conclusion: The proposed VA-IL-DLLµE method was developed and applied for the estimation of Cd²⁺and Pb²⁺ion content in various water, vegetables and tobacco samples, and satisfactory results were obtained. The obtained recovery values showed good agreement with the certified values.

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Author Biography

AYMAN A. GOUDA, Chemistry Department, Faculty of Science, Zagazig University, Zagazig, 44519, Egypt, Occupational Health Department, Faculty of Public Health and Health Informatics, Umm AL-Qura University, Makkah, Saudi Arabia

Pharmaceutical Analysis

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