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Analytical and Bioanalytical Electrochemistry، جلد ۱۶، شماره ۸، صفحات ۷۱۱-۷۲۷
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عنوان انگلیسی Electrochemical Determination of Bisphenol A in Polycarbonate bottles on MWCNTs-Modified Glassy Carbon Electrode in Kenya
چکیده انگلیسی مقاله Endocrine-disrupting chemicals are pollutants known to disrupt metabolism, and hormone biosynthesis or alter how the endocrine system works. Research has shown that Bisphenol A (BPA) mimics estrogen and thyroid hormone therefore a potential endocrine system disruptor. Exposures to Bisphenol A above threshold levels leading to endocrine disruption are expected when there is persistent use of products made using bisphenol A. Among the key sources of BPA that leach to the container’s contents through hydrolysis are polycarbonate containers. In this study, we monitor levels of bisphenol A exposure to users of polycarbonate containers using cyclic and differential pulse voltammetry in Thika town. Results obtained for the bisphenol A levels using voltammetric method for all the new and old sampled bottles subjected to varying conditions like time and temperature were in the range 0.3–1.6 µgmL-1 for water samples and 2.2–3.7 µgmL-1 for baby milk samples. As temperatures were increased from 25oC to 95oC, the amount of BPA leaching from the polycarbonate containers increased into water and milk. Further, results obtained show that the amount of Bisphenol A leaching increased in all the bottles, both new and used as contact time increased from 1 hour to 12 hours. All the new and old samples overshot the tolerable daily intake for Bisphenol A of 4 μg/kgbw/day allowed by the European Food Safety Authority (EFSA) and this rings an alarm for careful and thorough attention.
کلیدواژه‌های انگلیسی مقاله Bisphenol A,Baby feeding bottles,water bottles,polycarbonate plastics,Voltammetry
نویسندگان مقاله Serah W. Njoroge |
Department of Chemistry, Faculty of Science and Technology, University of Nairobi, P.O. Box 30197–00100 Nairobi, Kenya

Peterson M. Guto |
Department of Chemistry, Faculty of Science and Technology, University of Nairobi, P.O. Box 30197–00100 Nairobi, Kenya

Immaculate Nyambura Michira |
Department of Chemistry, Faculty of Science and Technology, University of Nairobi, P.O. Box 30197–00100 Nairobi, Kenya

Deborah A. Abong'o |
Department of Chemistry, Faculty of Science and Technology, University of Nairobi, P.O. Box 30197–00100 Nairobi, Kenya

نشانی اینترنتی https://www.abechem.com/article_715422_29a6bcf5e677f74d9b50f95676398055.pdf
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