Abstract

A great deal of attention has been paid lately to release of phthalate esters (PAEs) from polyethylene terephthalate (PET) bottles into PET bottled drinking water due to their potential endocrine-disrupting effects. Three kinds of PAEs, including diethyl phthalate (DEP), dimethyl phthalate (DMP) and dibutyl phthalate (DBP), were detected in 10 popular brands of PET bottles in Beijing, ranging from 101.97 μg/kg to 709.87 μg/kg. Meanwhile, six kinds of PAEs, including DEP, DMP, DBP, n-butyl benzyl phthalate (BBP), di-n-octyl phthalate (DOP) and di(2-ethylhexyl) phthalate (DEHP), were detected in PET bottled water, ranging from 0.19 μg/L to 0.98 μg/L, under an outdoor storage condition, while their concentrations ranged from 0.18 μg/L to 0.71 μg/L under an indoor storage condition. Furthermore, the concentrations of PAEs in brand D and E bottles were slightly increased when the storage time was prolonged. In addition, the concentrations of PAEs in commercial water contained in brand B and H bottles and pure water contained in brand E and G bottles were also slightly increased with the increase of storage temperature. Interestingly, DBP mainly contributed to the increased PAEs levels in simulation water. These results suggest that a part of the PAEs in PET bottled water originated from plastic bottles, which was related to the storage time and temperature. However, the PAEs in PET bottled water only pose a negligible risk to consumers if they follow the recommendations, such as storage at a common place (24 °C), away from sun and in a short period of time.

Highlights

  • Drinking water stored in polyethylene terephthalate (PET) bottles has become popular due to convenience and low cost

  • Mainly contributed to the increased phthalate esters (PAEs) levels in simulation water. These results suggest that a part of the PAEs in PET bottled water originated from plastic bottles, which was related to the storage time and temperature

  • Our data confirmed that dibutyl phthalate (DBP) was released into water from PET bottles when the storage time was prolonged and the storage temperature was increased, no positive relationship was found between the concentrations of PAEs and storage conditions

Read more

Summary

Introduction

Drinking water stored in polyethylene terephthalate (PET) bottles has become popular due to convenience and low cost. Public health concerns related to the potential leaching of chemicals such as phthalate esters (PAEs) from. PET bottles into the drinking water have been raised [2,3] due to their potential endocrine-disrupting effects [4]. PAEs can leach from thermoplastic packages into foods, beverages, and drinking water since they are not part of the polymeric matrix. Three kinds of PAEs, dibutyl phthalate (DBP), diethyl phthalate (DEP) and di(2-ethylhexyl) phthalate (DEHP), have been detected in PET bottled water [6]. Leaching of PAEs from PET bottles is affected by storage conditions, mainly including temperature and time

Methods
Discussion
Conclusion
Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call