Variation electrode, differential pulse

Van den Berg [510] carried out direct determinations of molybdenum in seawater by adsorption voltammetry. The method is based on complex formation of molybdenum (VI) with 8-hydroxyquinoline (oxine) on a hanging mercury drop electrode. The reduction current of adsorbed complexions was measured by differential pulse adsorption voltammetry. The effects of variation of pH and oxine concentration and of the adsorption potential were examined. The method was accurate up to 300 nmol/1. The detection limit was 0.1 nmol/1. 

The variation of temperature induced by the laser pulses can be estimated through a veiy simple model, by considering that the fraction of the energy of the laser pulse that is not reflected on the surface, is converted immediately into heat at the surface of the electrode. ° ° Then, the temperature change can be calculated by solving the following partial differential equation ... 

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