Detection of High Temperature Effect on Quality of Drinking Water Bottled with PET Plastic

Abstract

Plastic pollution is currently a global problem and a major threat to human health and the environment. The effect of exposure to thermal and solar stress on the quality of drinking water bottled in plastic for the two types (Aquafina and Alhilwa) was studied. Chemical tests of the drinking water were conducted after each exposure and during different times. Thermal analysis of bottled drinking water plastic that was exposed to solar and thermal stress was studied to indicate the type and level of chemical contamination of bottled drinking water with chemical compounds released as a result of thermal stress or solar stress. From the results of chemical tests to raise awareness of drinking water, it was found that some characteristics exceeded the permissible limits, such as total hardness, chloride, pH level, etc., and that they increased with increasing exposure to high temperature, depending on the type of stress. When exposure to high temperatures increased, the plastic cracked and transformed at a temperature of (55) Celsius and an exposure time of 12 hours. Through the results of the thermal analysis of plastic before and after exposure to thermal and olfactory stress, the significant effect of exposure became clear and the difference between thermal exposure and solar exposure was evident through the variation in readings of transition peaks and phase transition energy for thermal analysis by thermal scanning calorimetry.