環(huán)境雌激素BPA的電化學(xué)行為研究.pdf

1、重慶大學(xué)碩士學(xué)位論文環(huán)境雌激素BPA的電化學(xué)行為研究姓名：羅忠禮申請學(xué)位級別：碩士專業(yè)：物理化學(xué)指導(dǎo)教師：陳昌國20050501重慶大學(xué)碩士學(xué)位論文 英文摘要IIABSTRACTThe pollution of the Environmental Estrogen has become the great problem in theworld, and it is much interested in most of country

2、to research. Electrochemical methodis a green technique that has been widely used to analysis and remove to pollutionmaterials.In this dissertation, the properties of BPA is systematically analyzed and then aseries of me

3、thods, such as Linear Sweep Voltammetry(LSV),Cyclic Voltammetry (CV),Square Wave Voltammetry(SWV), Chronocoulometry(CC), Chronopotentio metry (CP),Differential Pulse Voltammetry(DPV), AC Impedance (IMP) are proposed to e

4、valuatethe reactivity in the electrode. Some of the results are tested by instrument such asUV- Vis,FT- IR and HPLC.At first, we use CV to investigate adsorption of BPA in the electrode, which is theactivity in the Pt mu

5、ch more than that of PtO. Both of them are Frumkin adsorptionpattern which are tested by CC, and the G ? Pt is - 27.762 kJ / mol, but G ? PtO is- 27.143kJ/ mol, which suggested that the electrode has spontaneity adsorpti

6、on. The surface ofthe platinum electrode adsorption ? is 4.0×10- 7mol/cm2.Secondly the result by CV suggested that the anode- oxidation BPA is process ofirreversible, which indicate that the platinum electrode proce

7、ss for BPA are controlledby adsorption at acid medium and by diffusion or multi- controlled at alkaline medium.The result is tested by IMP, which is appeared two circle loops, implied that theelectrode surface come into

8、being a adsorption intermediate while processing chemicaldesorption reaction. The electrochemical reaction of BPA electron number is 1,which isconsistent with CV.Thirdly it is satisfied that BPA is analyzed by DPV, and a

9、 linear relationshipbetween peak currents and BPA concentrations was obtained in the range of 10- 3 to10- 6mol/L，Detection limit of the method was found to be 10- 7 mol/L，and RSD was foundto be the range 0.6% to 7.6%。it

10、was concluded that there were no significantdifferences between the results obtained by the DPV and those obtained by the HPLCmethod.The formation of the electropolymerized film of BPA was evaluated by monitoringthe chan