MODIFICATION OF CARBON PASTE ELECTRODE USING POLY(GLUTAMIC ACID) FOR VOLTAMETRIC DETERMINATION OF BISPHENOL A AND BISPHENOL B

• Main Author: Puspita, Fitria
• Format: Theses
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/38646
• Institution: Institut Teknologi Bandung

Hisphenol ...J. (8P.•I ) and bispheno/ 8 (8?8) are one o( basic components in mwluf( ICtiii'C! of' jJO!icarbonatc plastic 1rhich o.fien used as food or be1•erage containers. Some researches sho11•that 8PA & 8?8 molecules can be released (rom the plastic in inadequate stomge conditions so they can he ingested by human. .\leclnH•hile. .fJI'C!S encC! o.f excessi ,•e BPA and 8?8 in hunwn bod.\' is harm.ful to health. Therefore. determination o(BP. J and 8P8 in/'ood or be1•emge containers is imJ JOrtwlt to do. In this research. I'Oitanunetric anafl'sis method ha1•e been de1•e/opcd using carbon paste C!lcctrode (CPE) mod(!ied 11•ith pofv(glutamic acid)(CJ>/:'-.\'IP)/or determination q(HPA and 8?8. Modification ofCP£ sw:face \\'liS conducted L l' elcctropof\'llleri::ation process using cyclic 1'01/(/171171ell:\' (C T } tc.:chnitfUC inu solution containing gluwmic a cid in 0.1 .\1 phosphate hi!fT'er solution us supponing clect rol\'te. Til e elcctropoll'meri:::ation cycles. pi/ vfanafvte solution and e(('ect SUIII u;te ha1•e been in1•estigated. .l nafrticaln! eosl/l'enl ent results using dUfercntiul pulse ,•oltwnmctJ:\' (DP I ') sho11• tlwt the mod(!ication can increase sensiti1•ity and stability q f elect rode. The calibmtion CIIITC pro,•ides a linear range of sensor lt•as.fi•om I to /00 ,u.\l.f'or BP.• I and BPB n•ith limit o,(detection (LOD) o.f 0.56 .\lm and O...f 8. respectil •e f\'. ,\/ easurement BPA in reusable drinking bollle 1\'Cif er samples sho11•ed accurat e results and 11•ere not sign(!icantll' d(((erent compared to I IPLC result s at 95 \t'ith confidence le1•e / at 95 °o.