Waste polystyrene foam-derived sorbent for determining bisphenol-A from canned beverages

Myo Myint Zaw; Sujittra Poorahong; Proespichaya Kanatharana; Panote Thavarungkul; Chongdee Thammakhet-Buranachai

doi:10.1016/j.foodchem.2022.134834

Waste polystyrene foam-derived sorbent for determining bisphenol-A from canned beverages

Food Chem. 2023 Mar 30;405(Pt A):134834. doi: 10.1016/j.foodchem.2022.134834. Epub 2022 Nov 6.

Authors

Myo Myint Zaw¹, Sujittra Poorahong², Proespichaya Kanatharana¹, Panote Thavarungkul¹, Chongdee Thammakhet-Buranachai³

Affiliations

¹ Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand.
² Functional Materials and Nanotechnology Center of Excellence, Faculty of Science, Walailak University, Nakhon Si Thammarat, 80160, Thailand.
³ Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand. Electronic address: chongdee.t@psu.ac.th.

PMID: 36351315
DOI: 10.1016/j.foodchem.2022.134834

Abstract

Polystyrene-based products are widely used in industrial and daily activities, but their subsequent disposal can negatively affect the environment. This work focuses on reducing polystyrene waste into useful material. A waste-derived polystyrene sorbent (WDPS) was fabricated and successfully applied to determine bisphenol-A in canned beverages. High-performance liquid chromatography with a diode-array detection (HPLC-DAD) was applied to quantify bisphenol-A. Good linearity at a concentration range of 2.5-50 μg L^-1 was achieved. The limit of detection was 0.93 ± 0.02 μg L^-1. Good precision (RSDs < 1.6 %, 4 concentrations, n = 6) in spiked coconut juice samples were obtained. The contamination of BPA in canned beverage samples were found in the range of 6.3 ± 0.2 μg L^-1 to 27.0 ± 1.0 μg L^-1 with recoveries in the range of 70.4 ± 1.6 % to 82.4 ± 0.4 %. This proposed method also offers reduced polystyrene waste, reuse as a sorbent, and recycling after use.

Keywords: Bisphenol-A; High-performance liquid chromatography; Polystyrene sorbent; Recycling; Reduce waste; Waste polystyrene foam.

MeSH terms

Benzhydryl Compounds / analysis
Beverages / analysis
Chromatography, High Pressure Liquid / methods
Food Contamination* / analysis
Polystyrenes*

Substances

Polystyrenes
bisphenol A
Benzhydryl Compounds