The effect of sunlight exposure on physicochemical properties of plastic bottled water at Al-Mogran station in Khartoum State, Sudan

Abstract EN

In this work, Inductively Coupled Plasma Emission Spectroscopy Technique (ICPE) has been used to study the physicochemical properties of plastic bottled water before and after sun light exposure.

One sample has been taken from Al-Mogran Station in Khartoum State, Sudan at the end of the fall season in 2019.This sample has been exposed to sunlight in plastic bottled for 50 days.

Before exposure to sunlight, many macro and micro minerals such as (Calcium, Potassium, Magnesium, Sodium, Sulfur, Copper, Iron, Iodine, Rubidium, Silicon, Boron, Lithium, Manganese, and Zinc) were detected with different concentrations at (97,3.0,140,22,930,15,170, 15,730,220,0.87,0.05,0.75, and 0.95 ug / L ) respectively.

Some toxic and radioactive elements such as (Aluminum, Barium, Erbium, Titanium, and Strontium) were appeared with various concentrations at (63, 0.21, 12, 6.2, and 0.32 ug / L ) consecutively.

These results may return to the location of sample, vital activities, and the floods that transport the dirt to the Nile River in the fall season.

After sunlight exposure, concentrations of macro and micro minerals above were changed to (100,1.6,100,15,730,11,43,12,700 ,95,0.49 ,0.05,0.35, and 0.26 ug / L ) respectively.

One new micro minerals which called (Vanadium) was found with concentration at (0.22g / L) .

The concentrations of toxic and radioactive elements above were modified to (29, 0.14, 4.6, 2.5, and 0.35 ug / L ) successively, and five new toxic elements like (Arsenic, Bismuth, Antimony, Holmium, and Platinum) were existed with concentrations at (21+, 4.8, 5.9, 1.5, and 23 ug / L ) respectively, and these results might relate to the interaction between water and plastic.

The results before and after exposure to sunlight were found at range within background values except for (Titanium, Arsenic, and Bismuth).