The photochemical degradation kinetics of Sodium pamino-Phenyl Sulphonate in aqueous solution and CdS colloid systems was studied by means of ESR method, and the kinetics behaviour for both the photoreactions in aqueo...The photochemical degradation kinetics of Sodium pamino-Phenyl Sulphonate in aqueous solution and CdS colloid systems was studied by means of ESR method, and the kinetics behaviour for both the photoreactions in aqueous solution system and in CdS colloid system was compared. The results indicated that both the initial concentrations of SSN and the presence of CdS colloid obviously affected the photodegradation processes of SSN in the way of enhancing the rate constants for the formation of free radical SO3. The kinetics processes of photoreartions were treated by the quasi-stationary analysis method, the results of analysis are consistent with the phenomena observed in our experiments. The experimental results were briefly analyzed and discussed.展开更多
A new method of spectrophotometric determination of copper with N-heptyl-N’-(sodium p-aminaobenzenesulfonate) thiourea(HABST) has been reported. And the optimum conditions has been studied. In HAc-NaAc buffer solutio...A new method of spectrophotometric determination of copper with N-heptyl-N’-(sodium p-aminaobenzenesulfonate) thiourea(HABST) has been reported. And the optimum conditions has been studied. In HAc-NaAc buffer solution at pH4.5～6.0, Cu 2+ HABST forms a 1:3 stable blue water soluble complex with an apparent molar absorptivity of ε 347.6 =4.5110 4L·mol -1 ·cm -1 . Beer’s law is applicable in the range of 5～μg/25ml Cu 2+ . It has been used to the determination of copper in biological samples with satisfactory results and ercoveries.展开更多
文摘The photochemical degradation kinetics of Sodium pamino-Phenyl Sulphonate in aqueous solution and CdS colloid systems was studied by means of ESR method, and the kinetics behaviour for both the photoreactions in aqueous solution system and in CdS colloid system was compared. The results indicated that both the initial concentrations of SSN and the presence of CdS colloid obviously affected the photodegradation processes of SSN in the way of enhancing the rate constants for the formation of free radical SO3. The kinetics processes of photoreartions were treated by the quasi-stationary analysis method, the results of analysis are consistent with the phenomena observed in our experiments. The experimental results were briefly analyzed and discussed.
文摘A new method of spectrophotometric determination of copper with N-heptyl-N’-(sodium p-aminaobenzenesulfonate) thiourea(HABST) has been reported. And the optimum conditions has been studied. In HAc-NaAc buffer solution at pH4.5～6.0, Cu 2+ HABST forms a 1:3 stable blue water soluble complex with an apparent molar absorptivity of ε 347.6 =4.5110 4L·mol -1 ·cm -1 . Beer’s law is applicable in the range of 5～μg/25ml Cu 2+ . It has been used to the determination of copper in biological samples with satisfactory results and ercoveries.
