The dissolving potential of anode, the flatband potential, the open-circuit photovolt-age and the spectrum-response of ZnSe/GaAs/ aqueous electrolyte system have been investigated.This kind of composite semiconductor ...The dissolving potential of anode, the flatband potential, the open-circuit photovolt-age and the spectrum-response of ZnSe/GaAs/ aqueous electrolyte system have been investigated.This kind of composite semiconductor photoelectrode is enable to raise the efficiency of solar en-ergy convrsion.展开更多
Cobalt（Ⅱ）ion can catalyze the decolorrization reaction of hydrogan peroxide and m-cresol purple in a pH=10.0 NH3-NH4Cl buffer solution.The kinetic condition was studied,and the apparent activation energy（E′a=51.2...Cobalt（Ⅱ）ion can catalyze the decolorrization reaction of hydrogan peroxide and m-cresol purple in a pH=10.0 NH3-NH4Cl buffer solution.The kinetic condition was studied,and the apparent activation energy（E′a=51.26 KJ/mol.）and apparent rate constant[k′=1.13×10-4(s-1)]were determined.The linear range is 4.0～40 μg/L,and the detection limit for cobalt（Ⅱ）is 6.0×10-10 g/mL.The method was applied to the direct determination of trace Co（Ⅱ）in VB12,Jasmine tea and groundwater samples.展开更多
文摘The dissolving potential of anode, the flatband potential, the open-circuit photovolt-age and the spectrum-response of ZnSe/GaAs/ aqueous electrolyte system have been investigated.This kind of composite semiconductor photoelectrode is enable to raise the efficiency of solar en-ergy convrsion.
文摘本文研究了阿特拉津在土壤表面的紫外光光解的动力学,并研究了各种因素对光解的影响.实验表明,土壤粒度、湿度、pH值、有机质、腐殖酸和表面活性剂都影响阿特拉津在土壤中的降解.在紫外光辐射下,阿特拉津在土壤表面降解速率常数为(0.09～0.17)/min,光解深度为0.1～0.3 mm,半衰期为4～8 min.
文摘Cobalt（Ⅱ）ion can catalyze the decolorrization reaction of hydrogan peroxide and m-cresol purple in a pH=10.0 NH3-NH4Cl buffer solution.The kinetic condition was studied,and the apparent activation energy（E′a=51.26 KJ/mol.）and apparent rate constant[k′=1.13×10-4(s-1)]were determined.The linear range is 4.0～40 μg/L,and the detection limit for cobalt（Ⅱ）is 6.0×10-10 g/mL.The method was applied to the direct determination of trace Co（Ⅱ）in VB12,Jasmine tea and groundwater samples.
