PVC Coated with an Indole Derivative-Loaded Triton X-100: a New Sorbent for Cu, Zn and Mn Ions

Abstract

A method of separation and preconcentration for the determination of Zn, Cu, and Mn in natural water was described and real samples studied using flame atomic absorption spectrometry. The method is based on the adsorption of Mn 2+ , Cu 2+ and Zn 2+ onto 3-((1H-Indol-3-yl)(3-nitrophenol)methyl)-1H indole (INMI) that is loaded onto Triton X-100-coated polyvinyl chloride. The effects of pH, reagent amount, sample volume and matrix of the sample on the sorption of metal ions were also investigated. Detection limits (3 SDb/m) of 1.9, 2.1 and 1.8 ng mL −1 for Cu 2+ , Zn 2+ and Mn 2+ along with a preconcentration factor of 270 for these ions were achieved. We demonstrated highly efficient solid phase extraction for the determination of analytes in complex matrices. The proposed procedure was applied to analyses of industrial, natural and waste water as well as to those of soil and fruit samples.

Development of an efficient procedure for the preconcentration of copper(II) after solid phase extraction on modified sawdust

“…The presented preconcentration procedure shows high tolerance to interference from matrix ions. Preconcentration factor is higher (250) than some other methods [1,4,[12][13][14][15]. The column is also easily reproducible without the need of pre-conditioning or activation steps.…”

“…In trace analysis, therefore, a pre-concentration and/or separation of trace elements from the matrix are frequently necessary to improve the detection limit and selectivity [1]. Various methods have been used for the enrichment and separation of heavy metal ions.…”

“…Copper is important not only because it is an essential element, but also because it is toxic at high levels [4]. Different SPE sorbents have been used to the preconcentration of copper such as loaded Amberlite XAD-2 resin [4], polychlorotrifluoroethylene [5], Triton X-100 coated poly vinyl chloride [6], modified activated carbon [1,7,8], loaded Amberlite XAD-7 [9], modified alumina [10], octadecyl bonded silica [11], octadecyl-bonded silica memberane disk [12], immobilized salen [13], Dowex optipore V-493 [14], MEFMAT [15], Ambersorb 563 adsorption resin [16] and modified activated carbon [17].…”

Selective and Sensitized Spectrophotometric Determination of Cr(III) Ion using 2-(Phenyl)-4,5-di(4-methoxyphenyl)imidazole, Ligand for Speciation of Chromium Ion in Triton X-100 as Surfactant

“…The samples were heated to one tenth volume while stirring. All samples were performed according to general described procedure 27 after adjustment of samples pH to desired value.…”

Determination of Cd(II), Zn(II) and Ag(I)in Different Matrixes After Solid Phase Extraction on Sodium Dodecyl Sulfate(SDS)-Coated Alumina as their 2,3 Di Hydro 2,3 ParatolylQinazoline (1 H)- 4 one (DPTQO) by FlameAtomic Absorption Spectrometric

“…Then the Test Procedure described above was applied. For the application of the present procedure to amalgam alloy, an accurately weighed 0.4 g portion of each amalgam alloy sample was digested as described previously 28,29 . and dissolved in the smallest volume of water, and the solution was transferred to a 100 mL volumetric flask by adjustment of the pH of the solution to the desired value; then the Test Procedure described above was carried out.…”