The title compound was synthesized from 2,4 difluoro α (1 H 1,2,4 triazol 1 yl) acetophenone by phase transfer catalytic reaction with trimethyl sulfoxonium iodide. Total yield of this improved method was 42%.
The synthesis of a new reagent 1-azobenzene-3-(5-nitro-2-pyridyl)-triazene(ABNPDT) and its colour reaction with cadimum were reported. At pH=10.40, in the presence of Triton X-100, ABNPDT react with cadimum to form a ...The synthesis of a new reagent 1-azobenzene-3-(5-nitro-2-pyridyl)-triazene(ABNPDT) and its colour reaction with cadimum were reported. At pH=10.40, in the presence of Triton X-100, ABNPDT react with cadimum to form a red Complex. The maximum absorption of reagent and complex are at 430nm and 520NM respectively. The molar absorpitivity is 2.0710 5L·mol -1 ·cm -1 . Berr’s law can be applied in the rang of 0~12μg/25ml. This method was used to determine tarce cadmium in water with satisfactory results.展开更多
文摘The title compound was synthesized from 2,4 difluoro α (1 H 1,2,4 triazol 1 yl) acetophenone by phase transfer catalytic reaction with trimethyl sulfoxonium iodide. Total yield of this improved method was 42%.
文摘The synthesis of a new reagent 1-azobenzene-3-(5-nitro-2-pyridyl)-triazene(ABNPDT) and its colour reaction with cadimum were reported. At pH=10.40, in the presence of Triton X-100, ABNPDT react with cadimum to form a red Complex. The maximum absorption of reagent and complex are at 430nm and 520NM respectively. The molar absorpitivity is 2.0710 5L·mol -1 ·cm -1 . Berr’s law can be applied in the rang of 0~12μg/25ml. This method was used to determine tarce cadmium in water with satisfactory results.