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《Sichuan Nonferrous Metals》 2004-04
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Determination of Micro-element Palladium by Spectrophotometry method with Dibromoalizarin Violet

CHEN Wen-bin,XU Guo-xiang,QIN Zheng-chao,FAN Li-hua (Department of Chemical Engineering.Huaihai Institute of Technology Lianyungang 222005,China)  
In the presence of Cetyltrimethylammonium bromide(C_~19 H_~10 Cl_2O_2)and water,the condition of color reaction of Pd(II)with Dibromoalizarin Violet was studied.Results show that the new colour reagent reacts with Pd(II)to form a claret complex(1∶3)in the presence of HAc-NaAc buffer at pH 6.2.The maximum absorption wavelength and apparent molar absorptivity are 594nm and 1.74×105L·mol~-1 ·cm~-1 respectively.Beer's law is obeyed in the range of 0~15μg/25ml Pd(II).The method has been applied to the determination of micro palladium(II)in palladium catalyst and mineral samples with satisfactory results.
【CateGory Index】: TG115
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