Cyanobacterium Nostoc linckia growth under different concentrations of copper(II) ions

Abstract

In this work, the effect of divalent copper ion (Cu2+) exposure was studied on cyanobacterium Nostoc linckia growth. A sulfate salt of copper, namely copper(II) sulfate pentahydrate, was used as a source of metallic ions. The copper concentrations chosen for the study were 0.1, 0.5, 1.0, 1.5, 2.0, 2.5, 5.0, 10 and 20 mg/L, which were added to the culture in the exponential growth phase of the life cycle. Nostoc growth was determined spectrophotometrically at the end of cultivation cycle, which lasted 12 days.