β Scribed by Joseph Wang; Ziad Taha
No coin nor oath required. For personal study only.
The antifouling properties o f poly(ester-sulfonic acid) coatings are explored for stripping voltammetric measurements of trace metals in the presence o f organic surfactants. Up t o at least 100 mg/L of gelatin, Triton X-100, albumin, or humic acid does not affect the stripping response o f heavy metals. A relative standard deviation o f 4% is obtained for 20 successive measurements o f 5 X lo-' M lead in the presence o f 50 mg/I. Triton X-100. Experimental variables, including film thickness, rotation speed, analyte, and surfactant concentrations, arc' explored. Potential for speciation work and assays of clinical samples is also indicated. The resistance t o surfactant interferences, coupled with the simple coating procedure, good mechanical stabiliv, and lou. cost, make poly(ester-sulfonic acid) coatings very attractive for anodic stripping voltammetn.
π SIMILAR VOLUMES
The time dependent backwards implicit method is used to simulate the shape and position of the stripping peaks in DC (linear scan) anodic stripping voltammetry at mercury thin film hydrodynamic electrodes for electrochemically irreversible and quasireversible systems assuming that the electrode diff