5-(3-�׻�-2-��)-�Ǽ׻��ϳ��ٵĸĽ�FIA��ȷ�

ժҪ �ϳ��Լ�5-(3-�׻�-2-��)-�Ǽ׻��(MPMR),�о��ٵ��ɫ��Ӧ��Ƶ��ɫװ��,��һ��µ��ע��ȼ�⼼��,һ��ע��һ��Ӧ��,ʹ��ȴ��ߡ��pHֵΪ3.5~6.5��MPMR��Pd2+��Ħ��Ϊ2��1��,��max=436 nm,��=8.79��104L/(mol.cm),��Ƶ��120��/h,�ٺ��0~1.4��g/mL��Χ�ڷ��ϱȶ��ɡ��÷��ܻ��ٵĲⶨ,��⡣

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�ؼ���� ע�� 5-(3-�׻�-2-��)-�Ǽ׻��(MPMR)

Abstract�� 5-(3-methyl-2-pyridy)-methylenehodanine(MPMR)was synthesized and its chromomeric reaction with palladium was determined,and the optimal condition was obtained.A new FIA derivative spectrophotometry was proposed by a color comparison set.A differential absorption curve can be obtained with three inflexions,two valleys and one peak only by injecting sample at one time.The sensitivity for analysis can be raised.In pH 3.5��6.5,MPMR reacted with palladium to produce complex of 2��1,��_(max)=436 nm,(��=8.79��10~4 L��mol~(-1)��cm~(-1)).The frequency of sample insection is 120 times per hour.The content of Pd is 0��1.4 ��g��mL~(-1).Results show the proposed operation is suitable for the determination of the total contents of palladium.

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Received 2009-03-15; published 2009-03-15

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��;�ν��;�ڼ�;��;.5-(3-�׻�-2-��)-�Ǽ׻��ϳ��ٵĸĽ�FIA��ȷ�[J]. ��ѧ��ҵ�빤��, 2009,26(2): 158-160

ZHAO Zhen-yi,SONG Jin-he,YU Ji,LI Kun.Synthesis of 5-(3-methyl-2-pyridy)-methylenerhodanine and Palladium Improved FIA Derivative Spectrophotometry[J]. Chemcial Industry and Engineering, 2009,26(2): 158-160