| Category | CHEM | P02 | The Effect of Concentrations of Citric Acid on the Leakage of |
| BPA From Plastic |
| Abstract | The purpose of this research was to determine if increasing the |
| concentration of citric acid also increases the leakage of Bisphenol A |
| (BPA) from plastic. This experiment is important to study because |
| people will know if BPA will leak into their beverages depending on how |
| high the concentration of citric acid is. They will be aware that citric acid |
| levels affect BPA. Therefore, they will take it into consideration. If |
| people realize what problems it causes, then they would try drinking |
| from a glass at home or carrying beverages in a refillable steel |
| container instead of plastic. Eight experimental groups and one control |
| group were set up. Each experimental group received different |
| concentrations of citric acid- 10, 20, 30, 40, 50, 60, 70, and 80 |
| millimoles. The control group received 500 milliliters of tap water without |
| any citric acid. The qualitative measurements- BPA being present were |
| collected using an indicator, iron (lll) chloride. Data was collected for |
| four days after 19 days of the bottles sitting in the cabinet. All the |
| experimental groups resulted with a yellow and green color, and the |
| control group turned out to be a brown and orange color. The |
| hypothesis was not supported because the concentrations of citric acid |
| got higher as it went from the first experimental group to the eighth |
| experimental group. When they were tested, they resulted in the same |
| yellow and green color as the lower concentrations of citric acid. For |
| BPA to be present, a color other than a yellow and green color, and a |
| brown and orange color was supposed to appear. |
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