カワムラ　クニオ   KAWAMURA Kunio   川村　邦男    所属   広島修道大学  人間環境学部    職種   教授
言語種別	英語
発行・発表の年月	2006/06
形態種別	学術論文
査読	査読有り
標題	Acceleration effect of ethanol for the complexation of rhodium(III) with a cationic water-soluble porphyrin and an attempt to develop a determination method of rhodium(III)
執筆形態	共著
掲載誌名	Can. J. Anal. Sci. Spec.
掲載区分	国外
巻・号・頁	51(4),pp.201-206
担当範囲	Corresponding author
著者・共著者	◎Kunio Kawamura, Shukuro Igarashi, Takao Yotsuyanagi
概要	The complexation of noble metal ions with water- soluble porphyrins is normally difficult. According to our continuous investigations on accelerators for the metal- porphyrin complex formation, we have discovered that the incorporation of rhodium(III) into the 5,10,15,20- tetrakis(4-N-methylpyridyl)porphine (TMPYP) reaction is significantly accelerated with ethanol. The formation of Rh-TMPYP was completed within 15 min at pH 3.9 at 100 oC, while the yield of Rh-TMPYP was less than 1% without ethanol. The acceleration effect of accelerators decreased in this order: ethanol > methanol > 1-propanol > 2-propanol > ethyleneglycol > propyleneglycol. The accelerators seem to act as reducing agents. Possibility of this phenomenon to find applications was studied for the spectrophotometric determination of Rh(III).