Interaction between Selenomethionine and Copper Ions

Abstract

有 4 个峰(峰 I, II, III, IV). 扫描电位从 600 mV 到-600 mV 时, Cu(II)-(SeMet)2 配合物在 14 mV 时被还原为 Cu(I)-SeMet 配合物; Cu(I)-SeMet 配合物在-194 mV 被还原为 Cu(0)和 SeMet. 由-600 mV 回扫时, 还原产物 被逐次氧化为 Cu(I)-SeMet 配合物(128 mV)和 Cu(II)-(SeMet)2配合物(271 mV). 同时发现 Cu(I)-SeMet 配合物 在电位-100 mV 至 200 mV 间是稳定的, Cu(I)的氧化还原过程被观察到. 此外, 采用毛细管电泳法测得二元 Cu-SeMet 配合物的稳定常数(K1和 K2)分别为 2.24×10 7 和 2.24×10 6. 最后, 推测 Cu-SeMet 配合物的结构为: 在 pH 3.9 时, 铜离子通过 Cu-Se 和 Cu-OCO 键与 SeMet 发生配位作用; 在生理条件时, 铜离子通过 Cu-N 和 Cu-OCO 键与 SeMet 发生配位作用.

Effect of High Pressure Heat Treatment on Microstructure and Corrosion Resistance of Brass

“…Therefore, high pressure heat treatment has attracted more and more attention. Most research has focused on the high pressure heat treatment effects on the phase transformation during alloy solidification [4][5][6][7][8]. Recent work showed that high pressure heat treatment applied during the solid-state phase transformation of Cu-alloy can also change the microstructure of the alloy [9][10].…”