EXAMPLE: Diffusion in Sol Gel Glasses(contd) Problem: understand mass transport in sol-gels, characterization ◆ Experimenta:〔p.5255 Cel: Pt micradi含 k (4)44IAgcl(R〕 ◆口:Ce‖type?h ◆ Ft microdisk= u Tram lectrode〔uME Analyte]=5mM:[kCl]=0.15M ◆ Instrum ent:自露10自 thpa1pre-e
EXAMPLE: Diffusion in Sol-Gel Glasses(contd) 丸:加 easure d P阳a爬t z(P.529 E·Khc〔隐a彐g 彐9 ◆ Results:T动e1 and Figure7 D n dependent on 只妇cha口e r■■■■■墨nr■■目 ■"■■ ■■ P口b2th□r3■■】·口
Chronocoulometry(CC) Popularized by fred Anson 立tin Caltech〕 ◆ ame excitation: potentia ep til◆ R espon EA了 十 十 Integrated c ottrell 2NlADC tI
Chronocoulometry (cont') CHAD Response f 十 ◆ Anson|ats P ys, ti2 tlr2 Intercept:口d Slope: 2nF AD 2Co r12