CORE-SHELL MAGNETIC MOLECULAR IMPRINTED POLYMER FOR PRACONCENTRATION OF BISPHENOL A

• Main Author: Andreas
• Format: Theses
• Language: Indonesia
• Subjects: Kimia
• Online Access: https://digilib.itb.ac.id/gdl/view/38312
• Institution: Institut Teknologi Bandung

Bisphenol A (BPA) under the name of a chemical compound based on IUPAC [2,2-bis (4-hydroxyphenyl) propane] was first synthesized in 1891 as a synthetic estrogen for the pharmaceutical industry. BPA production is increasing after it is known to be utilized as an epoxy resin and base material for making polycarbonate plastic for food storage materials. The results of a published study said 96 % of pregnant women in the USA had exposed to BPA. Plastic bottles of mineral water and other aromatic drinking water made using BPA are reported to cause an increase in chemical hazards from urine produced close to 70 %. This has led to many questions in the community about the possible migration of BPA from food or beverage packaging due to inadequate environmental conditions of storage. Negative impacts that have been reported may interfere with androgen receptors as well as thyroid gland receptors, one of the causes of prostate cancer, and induce the occurrence of breast cancer. Current regulation still permits the presence of BPA residues in plastic products by 0.05 mg/kg, so to be able to determine the BPA content requires testing methods with the latest equipment, such as LC MS/ MS or GC MS/MS but this method is very expensive and requires high competence. Therefore we need to find a more simple method for determining BPA. The developed method is a selective method for BPA and can perform preconcentration so as to increase the sensitivity of measurement. The objective of this research is to synthesize functional materials of core-shell magnetite molecular imprinted polymers BPA/MIP-BPA for preconcentration of BPA by solid-liquid extraction method. Using 2-Vinylpyridine (2-VP) as monomer and ethylenglycoldimethacrylate (EGDMA) as cross-link and Fe3O4 as the magnetic core. The research method is carried out by batch and dynamic systems. The optimum adsorption results at pH 9, contact time 60 minutes, methanol solvent for desorption process, maximum adsorption capacity (qm) based on experiment and modeling respectively 102.75 and 107.52 mg/g. This adsorbent material follows Langmuir adsorption isotherm model, reusability study obtained recovery result of each cycle 102.8 ; 102.15 and 98.22 %. The Adsorbents have been used for BPA preconcentration processes from water samples prior to analysis by HPLC. The concentration of BPA in river water samples, mineral water (AMDK) sample 2, and sample 3 were 0.28, 0.08 and 0.11 mg / L.