キレート樹脂検知管によるモリブデン(IV)の迅速簡易定量

概要

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A chelating resin for the detector was prepared by mixing Pyrogallol Violet solution and 1.0 g of Dowex 2X8 or Dowex SAR anion exchange resin. After stirring for 30 min with magnetic stirrer, the resin was filtered off from the solution and dried at 50℃ in air to retain about 25% and 10% of the original water contentin Dowex 2X8 and SAR, respectively. A 200 or 300 mg portion of the resin was packed in a glass tube of 2.55 mmφ×100 mm, both ends of resin were plugged with cotton wool. During determination, 0.5 cm^3/3 min at 15〜25℃ (2X8) and 4 cm^3/2 min at 90℃ (SAR) of sample solution (pH 3.5) was sucked into the column and the length of colored layer appearing in the column was measured. By placing a column containing cation exchanger in front of the detection tube, diverse cations could be preliminarily removed. Determinable concentration range of Mo (VI) ion was 0.27〜2.7 (SAR) and 27〜665 (2X8) μg/cm^3 with an error of ±10%.
社団法人日本分析化学会の論文
1988-05-05