Analytical Sciences

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

Shigehiro KAGAYA, Yumi SAEKI, Daiki MORISHIMA, Riko SHIROTA, Takehiro KAJIWARA, Toshifumi KATO, and Makoto GEMMEI-IDE

Graduate School of Science and Engineering for Research, University of Toyama, Toyama 930-8555, Japan

The potential of Presep^® PolyChelate as a chelating resin was studied in detail. The chelating resin with extraction capacity for Cu of 0.30 mmol L⁻¹ could quantitatively extract Cd, Co, Cu, Fe, Mo, Ni, Pb, V, and Zn at pH 4 or 5.5; however, only very scant amounts of Na, K, Mg, and Ca were captured at pH levels below 7. The quantitative extraction could be achieved in 100 – 1000 mL of artificial seawater and at a flow rate of 3 – 30 mL min⁻¹. The performance of Presep^® PolyChelate was compared to the other aminocarboxylic acid-type chelating resins, including Nobias Chelate-PA1, Chelex 100, Muromac B-1, Lewatit TP 207, and NTA Superflow, under the same conditions. The solid-phase extraction of the nine elements in the certified reference material (ES-L-1, ground water) and a commercially available table salt was also demonstrated.

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