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Topic: Standard Addtion F-AAS  (Read 2413 times)

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Offline Worsel182

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Standard Addtion F-AAS
« on: March 17, 2010, 02:12:52 PM »
Hello there,

I am having trouble with a particular question on my course. It goes like this:

Lead was determined in a sample of road run-off water using F-AAS with the standard addtion method of experimental design. A sample of the water was aspirated into an AAS and the absorbance was found to be 0.15. A 50cm3 sample of the water was then mixed throughly with 0.50cm3 of a standard addition containing 2.1 ppm lead. This mixture was aspirated and its absorbance found to be 0.26. Calculate the concentration of lead in the road runoff water.

Could anyone help with pointing me in the way of an equation that might help? It would be much appreciated. :)
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Offline Dan

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Re: Standard Addtion F-AAS
« Reply #1 on: March 17, 2010, 02:40:42 PM »
Can you define F-AAS and AAS?
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Offline Worsel182

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Re: Standard Addtion F-AAS
« Reply #2 on: March 17, 2010, 02:53:05 PM »
Quote from: Dan on March 17, 2010, 02:40:42 PM
Can you define F-AAS and AAS?

F-aas is flame atomic absorption spectroscopy which would normally use a air/acetylene flame. Although it can vary depending on the element. You would use atomic absorption spectroscopy to for determine the concentration of a particular metal element in a sample.
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