engleski

Northern Adriatic mesocosm experiment Rovinj 2003: introducing static mercury electrode as a sensor for organic microparticles

Background and Purpose: Mesocosm bloom experiment "Rovinj 2003" was the unique opportunity to evaluate relation and relevance of presently available measurement techniques for monitoring marine particles. A more specific goal was to contrast particle formation in low P and high P nutrient enrichments using the advantages offered by electrochemical approach. Materials and Methods: A static mercury electrode (SME) immersed directly in seawater sample is conveniently used to count surface-active particles, SAP. The method is direct, rapid and reliable. Results: Concentration and size distribution of microparticles detected by electrochemical sensor is reported during the bloom in low P and high P nutrient enrichments. SAP concentration was significantly higher in low P nutrient enrichments. Conclusions: Electrochemical sensing of microparticles was successfully tested and results contrasted to alcian blue staining technique.

surface-active particles; static mercury electrode (SME); electrochemical detection of microparticles; TEP; phytoplankton bloom; northern Adriatic Sea

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