@article{oai:kumadai.repo.nii.ac.jp:00022205, author = {Piao, Chengyun and Deguchi, Toshio and 出口, 俊雄 and 實政, 勲 and Sanemasa, Isao and Nagai, Hideo and 實政, 勲 and 朴, 承允 and 出口, 俊雄 and 実政, 勲 and 永井, 英夫}, issue = {10}, journal = {分析化学}, month = {Oct}, note = {application/pdf, 論文(Article), 極微量のカドミウムを含む試料水500mlに塩酸を加え1.5M塩酸酸性溶液とし,この溶液をDowex 1-X8 陰イオン交換樹mカラム(25×0.5cm)に流し、カドミウムを吸着させ、2.0M硝酸アンモニウム-0.2M硝酸混合溶離旅10mlで溶出させる。この溶出旅中のカドミウムを、つり下げ水銀滴電極を用いた微分パルスアノーディックストリッピソグボルタンメトリーによって測定する。前電解は、-0.8V vs.銀/塩化銀(3.3M塩化カリウム)、200秒、700rpmで、溶出曲線の記録はパルス周期0.1秒、パルス波高50mV、走査速度30mv s^<-1> で行った。本法を水道水及び雨水に適用し、数十pptレベルのカドミウムが相対標準偏差9%以内で定量された。陰イオン交換樹脂による濃縮づ容離操作を併用する本法は極微量のカドミウムのみの定量に適している。, As it is apparently difficult to measure directly very low concentration of cadmium by the differential pulse anodic stripping voltammetry (DPASV) with a hanging mercury drop electrode (HMDE), cadmium in a solution was concentrated with anion-exchange resin, and determined by DPASV. Hydrochloric acid was added to 500ml of a sample solution to contain 1.5M hydrochloric acid. After passing this solution through a Dowex 1-X8 column (25x0.5cm), the adsorbed cadmium was eluated with 10 ml of a mixed eluent consisting of 2.0M ammonium nitrate and 0.2M nitric acid. The effluent was transferred to an electrolytic cell, and was deaerated with nitrogen for 300s. Pre-electrolysis potential of -0.8 V υs. Ag/AgCl (3.3M KC1) was applied to the HMDE for 200s with stirring. The stripping curve was then recorded under the following conditions: scan rate 30mVs-1, pulse repetition time 0.1s, and pulse height 50mV. The determination of the cadmium by DPASV was carried out by the standard addition method. The method proposed here was successfully applied to the selective determination of cadmium of ca. 50 ppt concentration level contained in tap water and rain water with a relative standard deviation of less than 9%., http://www.jsac.or.jp/bunka/bunsekikagaku.html}, pages = {524--528}, title = {陰イオン交換樹脂による前濃縮を併用した微分パルスアノーディックストリッピングボルタンメトリーによる極微量カドミウムの定量}, volume = {33}, year = {1984}, yomi = {デグチ, トシオ and サネマサ, イサオ} }