Hrvatske vode
 
Primjena elektrokemijske metode u analizi polisaharida u morskoj vodi
Applying electrochemical method in the analysis of polysaccharides in seawater

Marta Plavšić1, Slađana Strmečki Kos2

Sažetak/Abstract: 

U ovom je radu opisana primjena brze i osjetljive elektrokemijske metode kronopotenciometrije s konstantnom pobudnom strujom (CPS) koja se do sada nije primjenjivala za analizu prirodnih voda i koja je omogućila detekciju polisaharida (PS) u morskoj vodi mjerenjem katalitičkog vala vodika. Elektroanaliza PS u moru bila je ograničena, jer su PS elektroinaktivne molekule. CPS metoda elektroanalize omogućuje određivanje i drugih polimernih organskih spojeva koji imaju katalitički aktivne grupe, a koje omogućuju razvijanje katalitičkog vala vodika iz kojeg se određuje količina tog polimernog organskog materijala. Ustanovljeno je da je povećana biološka aktivnost u moru povezana sa povećanom količinom PS i drugih katalitički aktivnih spojeva. Prilagodbom uvjeta elektroanalize, metoda se može primijeniti i na detekciju PS i drugih polimernih organskih spojeva u ekstraktima ljekovitih biljaka i izlučevinama morskih alga, te u nekim napitcima.

 

The paper describes the application of a quick, sensitive electrochemical method called chronopotentiometry with constant current chronopotentiometric stripping (CPS), which has not yet been implemented in analysing natural water and which has enabled the detection of polysaccharides (PSs) in seawater by measuring the catalytic wave of hydrogen. The electrolytic analysis of PSs in the sea was limited since PSs are electro-inactive molecules. The CPS method of electrolytic analysis also enables the determination of other polymeric organic compounds that have catalytically active groups because they enable the development of a catalytic wave of hydrogen, based on which the quantity of this polymeric organic material is determined. It was established that increased biological activity in the sea is related to increased quantity of PSs and other catalytically active compounds. By adapting the conditions of electrolytic analysis, the method can be also applied to the detection of PSs and other polymeric organic compounds in medicinal plant extracts, seaweed secretions and some beverages.

Kategorija: 
Stručni članak / Professional Paper
Ključne riječi/Key words: 

polisaharidi, polimerni materijal, morska voda, elektrokemijske metode

polysaccharides, polymeric material, seawater, electrochemical methods

Podaci o autorima/Authors affiliations: 

1 Institut Ruđer Bošković, Zavod za istraživanje mora i okoliša, Bijenička cesta 54, Zagreb, marta.plavsic@irb.hr

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