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
Using n butyl nitrite as diazotiation reagent,4,4′-Dinitrodiazoaminobenzene(DNAAB) was synthesized.The colour reaction of DNAAB with Cd(Ⅱ) was studied.At pH 11.7,in the presence of Triton X-100,DNAAB with Cd(Ⅱ) for...Using n butyl nitrite as diazotiation reagent,4,4′-Dinitrodiazoaminobenzene(DNAAB) was synthesized.The colour reaction of DNAAB with Cd(Ⅱ) was studied.At pH 11.7,in the presence of Triton X-100,DNAAB with Cd(Ⅱ) forms a yellow complex(1∶3).The molar absorptivity is 2.52×10 5L·mol -1 ·cm -1 adhering Beer’s law in the rang of 0-12μg/25mL.This method was used to determine trace Cd(Ⅱ) in human hair with satisfactory results.展开更多
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.
文摘Using n butyl nitrite as diazotiation reagent,4,4′-Dinitrodiazoaminobenzene(DNAAB) was synthesized.The colour reaction of DNAAB with Cd(Ⅱ) was studied.At pH 11.7,in the presence of Triton X-100,DNAAB with Cd(Ⅱ) forms a yellow complex(1∶3).The molar absorptivity is 2.52×10 5L·mol -1 ·cm -1 adhering Beer’s law in the rang of 0-12μg/25mL.This method was used to determine trace Cd(Ⅱ) in human hair with satisfactory results.
