Lead Preconcentration as RAC-(E, E)-N,N′-bis(2-Chlorobenzylidene)Cyclohexane-1,2-Diamine Complexes from Water and Tobacco Samples by Dispersive Liquid–Liquid Microextraction
Abstract
A dispersive liquid-liquid microextraction ( DLLME ) procedure for determination of Pb(II) in water and tobacco samples has been developed using rac-(E,E)-N,N′-bis(2-chlorobenzylidene)cyclohexane-1,2-diamine as a chelating agent. Factors influencing the efficiency of DLLME have been optimised, including metal solution pH, type and amount of dispersing solvent, type and amount of extraction solvent, amount of chelating agent and sample volume. The optimized conditions for maximum recovery were as follows: sample pH 6; dispersing solvent, 500 μL of ethanol; extraction solvent, 150 μL of chloroform; chelating agent, 150 μL of 0.01% rac-(E,E)-N,N′-bis(2-chlorobenzylidene)cyclohexane-1,2-diamine; and sample volume, 15 mL. The method was validated using the certified reference material SPS-WW2 waste water. The method offered a limit of detection (LOD) of 2.6 μg/L, a limit of quantification (LOQ) of 8.5 μg/L, and a relative standard deviation (RSD) of 5.2%.
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The accurate determination of lead is an important issue in analytical chemistry because of very low concentrations in some samples and matrix interference in real samples.
“Therefore, the accurate determination of lead is an important issue in analytical chemistry because of the very low concentrations in some samples as well as the presence of a matrix in real samples, which may interfere with instrumental determination [15,16,17].”
From Deep Eutectic Solvent-Based Microextraction of Lead(II) Traces from Water and Aqueous Extracts before FAAS Measurements (2020) · cites this paper as [15]
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- Authors
- Alothman, Z. A., Habila, M. A., Yilmaz, E., Warad, I., & Soylak, M.
- Affiliations
- King Saud University (SA)
- Erciyes University (TR)
- An-Najah National University (PS)
- Corresponding author
- Soylak, M.
- Venue
- Journal of Analytical Chemistry
- Publisher
- Pleiades Publishing Ltd
- Published
- 2015-05-26
- Volume
- 70
- Issue
- 6
- Pages
- 691-695
- ISSN
- 0021-8766 (ISSN-L)
- 1061-9348
- 1608-3199
- OpenAlex
- W373506904
- Cited by
- 10
- References
- 31
- Citations by year
- 2024: 1 · 2022: 1 · 2021: 1 · 2020: 4 · 2018: 1 · 2017: 1 · 2016: 1
- FWCI
- 0.78
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Journal of Analytical Chemistry (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Analytical Chemistry › Analytical chemistry methods development
- Physical Sciences › Chemistry › Electrochemistry › Electrochemical Analysis and Applications
- Physical Sciences › Engineering › Mechanical Engineering › Extraction and Separation Processes
- Keywords
- lead preconcentration, dispersive liquid-liquid microextraction, chelating agents, lead determination, water samples, wastewater, extraction optimization
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