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in an AES measurement should an external radiation source such as hallow cathode lamp be used?...

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Chemistry

in an AES measurement should an external radiationsource such as hallow cathode lamp be used? why?

compared to icp emission spectrometry, flame emissionspectrometry is little used except for the determinationnof thealkali metals and coccassionally calcium. why?

to measure the Na concentration in an unknown solutionby AAS or AES a relatively high concentration of KNO3 or KCl isoften added to eash sample. explain.

Answer & Explanation Solved by verified expert
4.0 Ratings (810 Votes)
In AES when an element is introduced into flame few of itsatoms are excited by absorbtion of thermal energy by flamemajority of the electrons remain in the ground state The excitedatom then emits characteristci radiation of the ekement and returnsto the ground state The intensity of the the emited lightradiation    See Answer
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