Synthesis of 1-(4-Nitrophenyl)-3-(2-Paradiazine)-Triazene and its Color Reaction with Zinc
Lin Xiang
Abstract
Lin Xiang
Abstract
This paper reports the synthesis of a new reagent 1-(4-nitrophenyl)-3-(2-paradiazine)-triazene (NPPT) and its color reaction with zinc(Ⅱ).In the presence of the surfactant Triton X-100 and in the medium KCl,H3BO3-NaOH of pH 8.8,the reagent reacts with znic(Ⅱ) to form 4∶1 yellow-brown complex.The maximum absorption wavelength is at 465 nm.The molar absorptivity is 3.15×104L·mol-1·cm-1.Beer's law is obeyed in the range of 0—0.56μg/10 mL of zinc(Ⅱ).The method has been applied to the determination of trace amount of znic(Ⅱ) in zinc gluconate oral solution.The results obtained by this method are consistent with those obtained by AAS.
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This paper reports the synthesis of a new reagent 1-(4-nitrophenyl)-3-(2-paradiazine)-triazene (NPPT) and its color reaction with zinc(Ⅱ).In the presence of the surfactant Triton X-100 and in the medium KCl,H3BO3-NaOH of pH 8.8,the reagent reacts with znic(Ⅱ) to form 4∶1 yellow-brown complex.The maximum absorption wavelength is at 465 nm.The molar absorptivity is 3.15×104L·mol-1·cm-1.Beer's law is obeyed in the range of 0—0.56μg/10 mL of zinc(Ⅱ).The method has been applied to the determination of trace amount of znic(Ⅱ) in zinc gluconate oral solution.The results obtained by this method are consistent with those obtained by AAS.
Key concepts: Molar absorptivity, Triazene, Reagent, Zinc, Color reaction, Chemistry, Spectrophotometry, Absorption (acoustics)