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ÕªÒª£º±¾ÂÛÎÄÓÃ×ÏÍâ-¿É¼û¹âÆ×·¨Ñо¿¸Ê°±ËáÓëÑÇÌúÀë×ÓÅäλ·´Ó¦£®¿¼²ìÁËζȡ¢Àë×ÓÇ¿¶È¡¢Åäλ±È¼°pHÖµµÈÒòËضÔÅäλ·´Ó¦µÄÓ°Ïì¡£½á¹û±íÃ÷£ºµ±I=0.02£»¸Ê°±ËáÓëÑÇÌúÀë×ÓµÄÅäλ±ÈΪ4£º1£»pH=5.0ʱ£¬¸Ê°±ËáÑÇÌúÓÐ×î´óµÄ·´Ó¦ËÙÂÊ¡£ÔÚ´ËÌõ¼þ£¬¸ù¾ÝArrhenius·½³ÌºÍAbsolute-rate theory·½³ÌÇóµÃÆä»î»¯ÄÜΪ4291.35J/mol£¬×ÔÓÉÄÜ¡÷G¡ÙΪ1786.60J/mol¡£¶øζȶÔÅäλ·´Ó¦µÄÓ°Ïì±íÏÖ²»ÊǺÜÍ»³ö¡£Ôڸʰ±ËáÓëÑÇÌúÀë×Ó·Ö±ð´óÁ¿¹ýÁ¿µÄÌõ¼þϵóöÅäλ·´Ó¦ÊǶþ¼¶·´Ó¦¡£×îºó±¾ÎÄÌá³öÁË¿ÉÄܵÄÅäλ·´Ó¦»úÀí£¬ÎªÖƱ¸¸ß´¿¸Ê°±ËáÑÇÌúÌṩÀíÂÛÒÀ¾Ý¡£
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Abstract: In this dissertation£¬the complexation between glycine and ferrous ions was studied by UV - Vis spectroscopy .The influences of complexation, such as temperature, ionic strength, coordination and pH value were observed. The result shows that: the ionic strength I = 0.02;the complex rate of glycine and ferrous ions (Gly / Fe) is 4:1; pH = 5.0£¬the rate constant of the complexation had the largest separately£®It wsa accounted that the Activation energy Ea was 4291.35J/mol by the equation of Arrhenius, and free energy ¡÷G¡Ù was 1786.60J/mol by the equation of Absolute-rate theory£¬and the temperature was not affect the the formation rate obviously. the complexation between glycine and ferrous ions was second-order reaction when glycine excess and ferrous ions excess. In the end£¬The theoretical basis was provided for the preparation of high purity ferrous glycine.
Key words: iron(¢ò)-glycine UV-visible spectroscopy Coordination reaction dynamics