2001•Trace Elements ScienceRequires access

Synthesis of 1-(4-nitrophenyl)-3-(5-nitro-2-pyridyl)-triazene and Its Color Reaction with Mercury

Yang Ming-hua

Abstract

A new triazene reagent 1-(4-nitrophenyl)-3-(5-nitro-2-pyridyl)-triazene (NPNPDT) has been synthesized and the color reaction of NPNPDT with mercury(Ⅱ) has been studied.In the presence of Triton X-100,orange-yellow complex(1∶2) appears at pH 11 2 buffer solution of Na 2B 4O 7-NaOH.The molar absorptivity is 2 1×10 5 L·mol 1 ·cm 1 .Beer's law is obeyed in the range of 0～280 μg/L for mercury. The trace mercury was determined in human hair and urine by the proposed method with satisfactory results.

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Key concepts: Triazene, Mercury (programming language), Chemistry, Molar absorptivity, Reagent, Color reaction, Nitro, Orange (colour)