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STUDY ON THE COLOR REACTION OF 1-(2,6-DICHOLOR-4-NITROPHENYL) -3-(4-NITROPHENYL)-TRIAZENE WITH COPPER AND ITS APPLICATION

Zheng Yun-f, Yang Ming-hua

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Abstract

The color reaction of 1-(2.6-dichloro-4-nitrophenyl)-3-(4-nitrophenyl)-triazene(DCNPNPT) with Cu( Ⅱ ) was studied. In the presence of Tween-80, the reagent with Cu( Ⅱ ) forms a yellow complex (1 : 4) at pH 9. 0-10. 0 in a buffer solution of Na2B1O7-NaOH. The molar absorptivity is 1. 1 × 105L · mol-1· cm1 by dual-wavelength spectrophotometry. Beer's law is obeyed in the range of 0-240μg · L-1 for Cu( Ⅱ). The copper contents in copper mineral and water were determined by this method with satisfactory results.

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What this paper is about

The color reaction of 1-(2.6-dichloro-4-nitrophenyl)-3-(4-nitrophenyl)-triazene(DCNPNPT) with Cu( Ⅱ ) was studied. In the presence of Tween-80, the reagent with Cu( Ⅱ ) forms a yellow complex (1 : 4) at pH 9. 0-10. 0 in a buffer solution of Na2B1O7-NaOH. The molar absorptivity is 1. 1 × 105L · mol-1· cm1 by dual-wavelength spectrophotometry. Beer's law is obeyed in the range of 0-240μg · L-1 for Cu( Ⅱ). The copper contents in copper mineral and water were determined by this method with satisfactory results.

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Available abstract

The color reaction of 1-(2.6-dichloro-4-nitrophenyl)-3-(4-nitrophenyl)-triazene(DCNPNPT) with Cu( Ⅱ ) was studied. In the presence of Tween-80, the reagent with Cu( Ⅱ ) forms a yellow complex (1 : 4) at pH 9. 0-10. 0 in a buffer solution of Na2B1O7-NaOH. The molar absorptivity is 1. 1 × 105L · mol-1· cm1 by dual-wavelength spectrophotometry. Beer's law is obeyed in the range of 0-240μg · L-1 for Cu( Ⅱ). The copper contents in copper mineral and water were determined by this method with satisfactory results.

Key concepts: Triazene, Molar absorptivity, Copper, Reagent, Color reaction, Spectrophotometry, Chemistry, Buffer solution

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STUDY ON THE COLOR REACTION OF 1-(2,6-DICHOLOR-4-NITROPHENYL) -3-(4-NITROPHENYL)-TRIAZENE WITH COPPER AND ITS APPLICATION — Research Paper | ScholarLens