Speciation analysis of vanadium in natural water samples by electrothermal vaporization inductively coupled plasma optical emission spectrometry after separation/preconcentration with thenoyltrifluoroacetone immobilized on microcrystalline naphthalene

Octa-<i>O</i>-Methoxy Resorcin [4] Arene Amberlite XAD-4 Polymeric Chelating Resin for Solid Phase Extraction, Preconcentration, Separation and Trace Determination of Ni(II), Cu(II), Zn(II) and Cd(II) Ions

“…Various SPE materials which have been used for the preconcentration of trace metal ions as their chelates include, activated silica gel [40,41], carbon [42][43][44][45], polyurethane foam [46] microcrystalline naphthalene [47], C 18 cartridges [48], Chelex-100 [49], Alumina [50], functionalized polyurethane foam [51], modified silica [52,53], sulfur powder [54] and Amberlite XAD resins [55][56][57][58][59][60][61]. Amberlite XAD (styrene-divinyl benzene copolymer) resins, as the copolymer backbone for the immobilization of chelating ligands, have some physical superiority, such as porosity, uniform pore size distribution, high surface area, and chemical stability toward acids, bases, and oxidizing agents, as compared to other resins [62][63][64][65].…”

Synthesis of aminopropyl triethoxysilane-functionalized silica and its application in speciation studies of vanadium(IV) and vanadium(V)

“…The proposed method was applied to a reference standard material (TM-25.2) and river water sample. Another sensitive and simple method for the speciation of V(IV) and V(V) was developed by Fan et al [27] utilizing a separation/preconcentration step by a microcolumn packed with immobilized thenoyltrifluoroacetone (TTA) on microcrystalline naphthalene. Both of the species were trapped by microcolumn at pH 4.0, and the vanadate (VO 2 + ) ion was collected selectively at pH 2.4.…”

<b>Application of Triton X-100 coated poly vinyl chloride as new solid phase for preconcentration of Fe³⁺, Cu²⁺ and Zn²⁺ ions and their flame atomic absorption spectrometric determinations</b>

“…These factors include the structure of the immobilized organic compound as a whole, the nature of the incorporated donor atoms (O, N, P and S), the positioning of the functional groups along the surface of the solid support and the steric requirements of the complex formed after uptake of the desired metal ion [13]. For this purpose, various sorbents [14][15][16][17][18][19][20][21][22] have been used. Since, our survey through literature did not show any application of 3-((indolin-3-yl)(phenyl)methyl)indoline (IYPMI) on PVC as solid phase, therefore, this new sorbent was applied for preconcentration and determination of the trace amount of Fe 3+ , Cu 2+ and Zn 2+ ions.…”