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2004•Sichuan Nonferrous MetalsRequires access

Determination of Micro-element Palladium by Spectrophotometry method with Dibromoalizarin Violet

Fan Li-hua

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Abstract

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.

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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.

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Available abstract

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.

Key concepts: Molar absorptivity, Palladium, Spectrophotometry, Reagent, Chemistry, Bromide, Color reaction, Absorption (acoustics)

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