Remote access to real experiments is crucial for distance learners to experience the sciences. The exploitation of technology for this purpose is advantageous in global teaching and in exchange of ideas on a single front irrespective of distance barriers. Implementation of the distance method leads to cost-effective integrated-e-learning where students at a remote location only need PCs and the Internet to perform the experiment. A remote electrochemical experiment is presented. The advantages of the remote electrochemistry laboratory for carrying out real-time experiments are discussed, and our experiences in setting up the laboratory are described. We explain how to perform the remote electrochemical experiments on the network with the main purpose of strengthening teaching in chemical sciences.
A new and explicit method has been developed for the determination of phentolamine (PA) at boron doped diamond electrode (BDDE) in the presence of anionic surfactant sodium lauryl sulfate using cyclic voltammetry, square-wave voltammetry and electrochemical impedance measurement. Electro-oxidation of PA exhibits a one electron coupled irreversible diffusion-controlled process. A probable oxidation mechanism has been deduced. Under the optimized condition, the response current was proportionally linear in the range of 2 to 18 ng/mL with a low detection limit of 0.71 ng/mL and quantification limit of 2.4 ng/mL. The practical applicability of the proposed method was demonstrated with successful determination of PA in human blood plasma samples.
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