Abstract
Ulva rigida is a widespread green seaweed found on the Mediterranean coast that is proposed as a biosorbent for Au, Hg and Ag. The uptake of Au, Ag and Hg is 0.46, 0.81 and 0.75 mmol g−1, respectively. The influence of pH, time of contact and concentration were studied. The authors propose an electroanalytical method to study the properties of the sorbent by including the sorbent in the composition of a carbon paste electrode. The result is a satisfactory reduction of the amount of reagents and sorbent required for all the experiments and a substantial reduction of the required time to perform the experiments.
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