BIOSINTESIS DAN KARAKTERISASI PARTIKEL PERAK EKSTRAK TANAMAN DAUN PORANG (Amorphophallus muelleri Blume) SEBAGAI PENDETEKSI ION LOGAM MERKURI

This study aims to synthesize and characterize silver particles using Porang leaf extract (Amorphophallus muelleri Blume) determine the selectivity of as mercury metal ion detectors. The employed a bioreductor stabilizer, 0.01M AgNO3 solution precursor, HgCl2 salt PbCl2 standard solutions be tested for selectivity. 2 g leaves used were cleaned, cut into pieces, allowed stand at room temperature three days, mashed. powder was added with 50 mL demineralized water then heated 15 minutes 80°C. reaction particle formation carried out by adding in variations 1:3, 1:4, 1:5, 1:6, 1:7, irradiating under indirect sunlight minutes. results mixture colloidal showed change color brownish-yellow. indicated particles. characterized UV-Vis spectrophotometer after heating, 1 hour, 5 hours temperature. obtained can synthesized optimum 1:3 1:4. PSa formed micro-nano-sized against ions that selectively detect Hg (II) compared Pb solutions.