ESTUDIO DE LA MIGRACIÓN DE ANTIMONIO (Sb) EN AGUAS ENVASADAS EN PET ROSA
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2022-03-11
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Jaén: Universidad de Jaén
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[ES] El polietilentereftalato (PET) constituye el material de envasado más frecuente en el agua mineral.
No obstante, en la fabricación de este material se emplea el antimonio como catalizador, motivo por el cual puede producirse la migración de este metal al agua. Por ello, la migración del mismo en agua embotellada en PET ha sido objeto de estudio durante los últimos años, mostrando que la temperatura y el tiempo constituyen los principales factores que aumentan su migración. Este trabajo se centra en la determinación de antimonio en agua mineral embotellada en PET de color rosa almacenada en diferentes condiciones. Las botellas fueron almacenadas durante 18 y29 días a 40 y 60 oC en estufa. Las muestras fueron analizadas mediante la técnica espectrometría de masas con plasma acoplado inductivamente. Asimismo, se realizó una comparativa de los resultados con las investigaciones previas sobre la presencia de antimonio en aguas minerales envasadas en PET de coloración azul. Además, se analizó el plástico mediante espectroscopia de infrarrojo con transformada de Fourier (FTIR) para comprobar la degradación térmica producida tras el tratamiento en estufa.
[EN] Polyethylene terephthalate (PET) is the most common packaging material in mineral water. However, in the manufacture of this material antimony is used as a catalyst, so the migration of this metal to water could occur. Numerous studies have shown the negative effects of oral antimony exposure on the body. For this reason, antimony migration in bottled water in PET has been the object of study in recent years, showing that temperature and time are the main factors that increase its migration. This work focuses on the determination of antimony in mineral water packed in pink PET stored under different experimental conditions. The bottles were stored for 18 and 29 days at 40 and 60 oC in an oven. At the end of their storage conditions, the samples were analyzed by inductively coupled plasma mass spectrometry. Moreover, a comparison of the results with previous studies on the presence of antimony in mineral waters packaged in blue PET was made. In addition, the plastic was analyzed by Fourier transform infrared spectroscopy to observe the thermal degradation produced after treatment in the oven.
[EN] Polyethylene terephthalate (PET) is the most common packaging material in mineral water. However, in the manufacture of this material antimony is used as a catalyst, so the migration of this metal to water could occur. Numerous studies have shown the negative effects of oral antimony exposure on the body. For this reason, antimony migration in bottled water in PET has been the object of study in recent years, showing that temperature and time are the main factors that increase its migration. This work focuses on the determination of antimony in mineral water packed in pink PET stored under different experimental conditions. The bottles were stored for 18 and 29 days at 40 and 60 oC in an oven. At the end of their storage conditions, the samples were analyzed by inductively coupled plasma mass spectrometry. Moreover, a comparison of the results with previous studies on the presence of antimony in mineral waters packaged in blue PET was made. In addition, the plastic was analyzed by Fourier transform infrared spectroscopy to observe the thermal degradation produced after treatment in the oven.