Determination of Molybdate in Environmental Water by Ion Chromatography Coupled with a Preconcentration Method Employing a Selective Chelating Resin

Chelating Materials Immobilizing Carboxymethylated Pentaethylenehexamine and Polyethyleneimine as Ligands

“…74 The sample solution (60 mL, pH 4.5), which was prepared by adding 30 mL of acetate buffer to 30 mL of seawater, was passed through 3 mL of a cartridge packing 0.10 g of Presep ® PolyChelate. The extracted Mo was quantitatively eluted using 6 mL of 0.1 mol L -1 sodium hydroxide solution.…”

Thermal Decomposition Behavior of a Chelating Resin Immobilizing Carboxymethylated Polyethyleneimine: Possibility of Estimation of Carboxymethylation Rate

“…[1][2][3][4][5][6][7] A chelating resin immobilizing carboxymethylated polyethyleneimine (CM-PEI), which is commercially available as Presep PolyChelate (FUJIFILM Wako Pure Chemical), has an excellent ability for solid-phase extraction of trace elements. [8][9][10][11][12][13][14][15] This resin is prepared by immobilizing PEI on a porous methacrylate resin (copolymer of glycidyl methacrylate and ethylene glycol dimethacrylate) and then carboxymethylating amino groups in the PEI using sodium monochloroacetate. 8,14 In this resin, the carboxymethylation rate, which is defined as the ratio of the amount of carboxymethyl group (mmol) to the amount of nitrogen (mmol) on the resin, dominates the selectivity of CM-PEI resin for solid-phase extraction of elements.…”

Potential of Presep® PolyChelate as a Chelating Resin: Comparative Study with Some Aminocarboxylic Acid-type Resins

“…However, only a few reports including solid-phase extraction using Presep ® PolyChelate have been published so far. 35 In this paper, the potential of Presep ® PolyChelate as a chelating resin is studied in detail. The solid-phase extraction behavior for various elements using Presep ® PolyChelate is compared to those using the other commercially available chelating resins, which contain aminocarboxylic acids as functional groups, under the same conditions.…”