Formation of the Metal Complezes between Protoporphyrin IX and Divalent Metal Cations in the Environment
Protoporphyrin IX is very slightly soluble in water whereas it is soluble in acidic as well as in basiC aqueous solution. The UV-vis absorption spectrum of the protoporphyrin IX shows a very sharp and strong maximum absorption peak at 400 nm in acetonitrilewater mixture solution (1:1 v/v). The maximum absorption peaks reacted with divalent transition metal ions such as Cu2+, Zn2+, Fe2+ were shifted to a longer wavelength and the absorbance of the maximum peak decreased as the contents of metal ions increased. However, the absorbance of the maximum absorption peak combined with representative divalent metal ion, Mg2+has nearly same value and the peak did not shifted. The formation constant (Kf) of the metal protoporphyrin IX complexes reacted with Cu2+, Zn2+, Fe2+ in acetonitrile-water mixture solution (1:1 v/v) were found to be 370, 418 and 24, respectively.
Protoporphyrin IX Metal complez Uv-vis spectrum Formation constants Divalent metal ions
Chi-In Jung Jeong-lm Yang Chul-Ho Park Jee-Bum Lee Hyoung-Ryun Park
Department of Chemistry and Research Institute of Basic Science,Chonnam National University,Gwangju, Department of Cosmetic Science,Nambu University,Gwangju,R.O.Korea 506-706 Department of Dermatology,Chonnam National University Medical School,Gwangju,R.O.Korea,501-757
国际会议
杭州
英文
97-99
2009-10-10（万方平台首次上网日期，不代表论文的发表时间）