A resorcinarene based chelating agent for selective cloud point extraction of Pb2+ ions in water: Synthesis, structural characterization and analytical applications

Jing-Long Liu; Xin-Min Zhou; Meng Sun; Ai-Quan Jia; Hua-Tian Shi; Qian-Feng Zhang

Arabian Journal of Chemistry (Jul 2023)

A resorcinarene based chelating agent for selective cloud point extraction of Pb2+ ions in water: Synthesis, structural characterization and analytical applications

Jing-Long Liu,
Xin-Min Zhou,
Meng Sun,
Ai-Quan Jia,
Hua-Tian Shi,
Qian-Feng Zhang

Affiliations

Jing-Long Liu: Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui 243002, PR China; Jiangsu Nanjing Environmental Monitoring Center, Nanjing, Jiangsu 210013, PR China
Xin-Min Zhou: Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui 243002, PR China
Meng Sun: Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui 243002, PR China
Ai-Quan Jia: Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui 243002, PR China; Corresponding authors.
Hua-Tian Shi: Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui 243002, PR China
Qian-Feng Zhang: Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui 243002, PR China; Corresponding authors.

Journal volume & issue: Vol. 16, no. 7
p. 104866

Abstract

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A sulfonate-functionalized C-iso-butyl-calix[4]resorcinarene was synthesized by the sulfomethylation reaction from calix[4]resorcinarene with formaldehyde solution and sodium sulfite. Sulfonatomethylated calix[4]resorcinarene (C4RS) adopts a symmetrical bowl-shaped conformation in solution and has four methylene sulfonate groups with flexible structure, which provide the possibility of trapping specific metal ions. C4RS is an excellent metal chelating agent and recognizer with good water solubility in the surfactant solution. It is worth noting that C4RS shows selectivity of the Pb2+ ion over a variety of other competing metal ions such as Cr3+, Ag+, Cu2+, Co2+, Ni2+, Mn2+, Mg2+, Sb3+ and Cd2+. Using C4RS and Trtion X-114 as chelating and extractant agent, respectively, the procedure of cloud point extraction (CPE) could extract Pb2+ ion with high efficiency and selectivity. The method of CPE combined with inductively coupled plasma atomic emission spectrometry (ICP-OES) showed low detection limit of 0.0006 mg L-1, high recovery rate and acceptable precision, and could apply to the determination of lead in the tap water and lake water.

Published in Arabian Journal of Chemistry

ISSN: 1878-5352 (Print)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: http://www.journals.elsevier.com/arabian-journal-of-chemistry/

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