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The Effects of Storage Time and Sunlight on Microplastic Pollution in Bottled Mineral Water Publisher



Ravanbakhsh M1 ; Ravanbakhsh M1 ; Jamali HA4 ; Ranjbaran M5 ; Shahsavari S6 ; Jaafarzadeh Haghighi Fard N7
Authors

Source: Water and Environment Journal Published:2023


Abstract

The microplastic particles (MPs) and effects of storage time and direct sunlight on the MPs in bottled mineral waters were investigated by three experiments conditions. The mean MPs concentration was 63.9 ± 38.9 MPs/L. Pellet forms, white/yellow colour and sizes < 100 μm were predominant MPs, accounted for 35.3%, 51% and 60.2% of the total MPs, respectively. Storage of bottled water under darkness and sunlight caused an increase of 1.5% and 2.5% of MPs pollution, respectively. Also, the estimated daily intake (EDI) of MPs was 2.1, 6.4 and 9.6 MPs/kg BW.day for adults, children and infants, respectively. It is concluded that high storage time and direct sunlight may lead to a greater MPs pollution in mineral water and also high human intake through drinking bottled water. Therefore, it is suggested to reduce the expiry date of the bottled mineral water and avoid sunlight contact before consumption. © 2022 CIWEM.
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