Attention Soft Drink Consumers!

1
Attention Soft Drink Consumers!

• Is Phosphorous in Your Beverages Endangering Your
  Health?

2
Health Hazards of Soda

• High sugar content
• High caffeine content
• Phosphoric acid content

3
So, Whats the Big Deal?

• Main Objectives
• find out how much phosphorous in Coca-Cola
  products
• Does phosphoric acid contained in soft drinks
  increase chances of developing bone disease?

4
Why Is It Added Then?

• According to a Coca-Cola Company Representative
• Adds tartness
• Adds acidity
• Safe to drink
• Contained in most foods

5
Content of Some Foods

• 8 oz Coca-cola classic
  41mg
• 10oz Cheddar Cheese 145mg
• 1 Large Egg
  90mg
• (Given by representative named Kim over the
  telephone)

6
Importance of phosphorous

• present in all living cells
• strong bones and teeth
• enzyme activity
• buffer in blood
• Reference (http//sanangelo.tamu.edu/mg/p.htm)

7
Experimental Method

• Molydenum phosphate complex
• 7H3PO4 12 (NH4)6Mo7O24H2O ?
• 7(NH4)3PO4(MoO3)12 51NH4
• 51OH- 33H2O
• Reduced by ascorbic acid
• Spectrophotometrically active-blue

8
The Quant Part

• Calculations
• calibration curve
• least squares
• ppm of Phosphorous in sample
• 2020XppmP2O5(75mgP/142mgP2O)
• where Xppm solve for x in least squares
  equation.

9
Results

• Sample Absorbance
• Sprite 0.006
• Coca-Cola 0.573
• ____________________
• Sprite - about 0
• Coca-Cola 137ppm
• 137mg/L
• which equals about 32mg in 8ozvs lit. value of
  41mg/80z
• Literature 17 mg (amt. in 100 grams)

10
Conclusion

• Sprite contains less than Coke
• Changes to Journal of Chemical Education
  procedure
• Wrap up of information
• References
• www.sanangelo.tamu.edu/mg/p.html
• www.thecoca-colacompany.com
• www.solopro.com/phosnew.html