Solid-phase microextraction of heavy metals in natural water with a polypyrrole/carbon nanotube/1, 10-phenanthroline composite sorbent material

Talanta
Ahmad RohanifarJon R Kirchhoff

Abstract

A simple and sensitive method for simultaneous microextraction and determination of heavy metals using a new direct immersion solid-phase microextraction (DI-SPME) sorbent material combined with inductively coupled plasma mass spectrometry (ICP-MS) was investigated. In this method, sorbent coating composites were prepared by simultaneous electropolymerization of pyrrole on pencil lead in the presence of carbon nanotubes (CNTs) and different metal chelating ligands. Among the coatings evaluated, a polypyrrole coating with entrapped CNTs and the chelator 1, 10 phenanthroline allowed the determination of silver, cadmium, cobalt, iron, nickel, lead, and zinc. Parameters influencing microextraction efficiency including pH, extraction time, and desorption time were optimized. The linear dynamic ranges were 1-1000 μg L-1 for Ag, 1-750 μg L-1 for Cd, Pb, and Zn, and 1-500 μg L-1 for Co, Fe, and Ni with limits of detection of 0.012-0.163 μg L-1 and limits of quantification of 0.039-0.542 μg L-1. The relative standard deviations (RSDs, n = 5) ranged from 1.85% to 5.01%. The effect of inorganic interferences on the determination of the heavy metals also was examined and finally, the method was successfully applied for the determination of...Continue Reading

References

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Citations

Jun 20, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xinghua LiHongmei Shi
Jul 28, 2019·Mikrochimica Acta·Beshare Hashemi, Shahabaldin Rezania
Jul 28, 2020·Critical Reviews in Analytical Chemistry·Elif Öztürk ErSezgin Bakırdere
Oct 8, 2020·Analytical Methods : Advancing Methods and Applications·Najla AlMasoudMustafa Soylak
Jan 19, 2021·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Pilaipan ChaikhanWipharat Chuachuad Chaiyasith
Nov 21, 2021·Journal of Separation Science·Sheng PengGangfeng Ouyang

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