Caffeine concentration method!

I'm trying to measure the concentration of caffeine after the extraction process. If I dissolve the same amount of extracted caffeine into same amount of distilled water, will I be able to calculate the concentration of caffeine?




For analysis you need a method to tell the difference between caffeine and other chemicals. Let's say that you dissolve a 1 g mixture of caffeine and contaminant. You can be sure that you have no more than 1 g of caffeine dissolved, but that doesn't tell you much. You can measure concentration of contaminant, convert to weight and subtract it to get the amount of caffeine. This is impractical, because you don't know what the contaminant is. 


You can use iodometric titration (<http://www.hkasme.org/News/818/Report_6B_Christiam%2520Alliance%2520SC%2520Chan%2520Memorial%2520Secondary%2520School_Chemical_test_for_caffeine.pdf>), but this gives you the sum of all oxidizable compounds including caffeine. 


You need to tell more about the instruments you have, so that we can help to choose you the right ones.


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