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Full-Text Articles in Analytical Chemistry
Heavy Metal Detection With Bismuth Film Electrode, Jen Olivero, Iain Laprade, Gabby Servito
Heavy Metal Detection With Bismuth Film Electrode, Jen Olivero, Iain Laprade, Gabby Servito
Creative Activity and Research Day - CARD
The purpose of this project is to extend the application of stripping square-wave voltammetry to allow for the detection of various heavy metals in water samples, to include lead, cadmium, and zinc contaminants. Glassy carbon bismuth film electrodes proved to be more reliable than screen printed carbon electrodes for detection of heavy metals. Parameters were optimized to allow for the quantification of lead, zinc, and cadmium simultaneously in tap water along with an unknown Fromm water sample. Cadmium and thallium were found to be present at the same potential on the voltammogram; this prevented simultaneous detection of both metals. Bismuth …
The Effects Of Ph On The Kinetics Of The Follow-Up Reaction Of Dopamine O-Quinone, Cyril Fong, Ziming Dong
The Effects Of Ph On The Kinetics Of The Follow-Up Reaction Of Dopamine O-Quinone, Cyril Fong, Ziming Dong
Creative Activity and Research Day - CARD
The electrochemical studies of dopamine have been conducted for many years due to dopamine’s importance as a neurotransmitter and its function in daily life for individuals. Dopamine undergoes electrochemical redox reactions in which the different products can be detected by cyclic voltammetry.3 The focus of the experiments was to determine the pH range at which dopamine o-quinone would undergo cyclization as well as the relationship between the rate of cyclization as pH in the physiological range. The measurements were taken using a gold working electrode vs. a Ag/AgCl (1 M KCl) reference electrode. It was observed that the peaks …
Effect Of Salt Concentration On Electrochemical Detection Of Dna, Ziming Dong, Eddie Madrigal, Ryan West Dr.
Effect Of Salt Concentration On Electrochemical Detection Of Dna, Ziming Dong, Eddie Madrigal, Ryan West Dr.
Creative Activity and Research Day - CARD
Electrochemical approaches for biological sensing offer the potential advantages of facile sample preparation, fast response times, ease of parallel and multiplexed measurements, and the possibility of miniaturization (of sample sizes, electrodes, and associated electronics). All of these factors contribute towards the feasibility of electrochemical methods in biological sensing and analysis. This potential has already been achieved with the commercialization of blood glucose meters, which often rely on an electrochemical transduction mechanism. We have previously demonstrated the ability to electrochemically detect and differentiate complementary and mismatched DNA using our method of melting DNA duplexes at electrified gold surfaces, i.e. e-melting. Recently, …