Zn uptake by Cladophora glomerata

The uptake of zinc by Cladophora glomerata at different pH-values, light conditions and exposure periods is reported. Zinc uptake was pH-dependent, with uptake increasing with rising pH. Uptake was greatest within the first two hours of exposure and was greater in light than in darkness due to increased pH. All results support the dominance of adsorptive uptake of zinc by Cladophora.