What is the function of adding Li to the sample(Table salt) and the standard solutions(prepared form the table salt) in direct intensity method and internal standard method of flame photometry*(an experiment to determine the sodium content of a table salt sample using direct intensity method and internal standard method)？
*A kind of atomic emission spectrophotometry mainly for the analysis of alkali metals such as Na, K and Li.
CHEM高手請進！(Please answer in english briefly!)
2007-02-10 7:01 pm
回答 (1)
2007-02-11 2:53 am
✔ 最佳答案
As atomic emission spectrophotometry measure atomization energy but not ionization energy . When measuring alkali metals such as Na, K in a sample such as (Table salt). Li usually added to the solution in other to suppress the ionization for Na, K to occur during their buring in flame.
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