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Laser Induced Breakdown Spectroscopy

  1. Sep 13, 2015 #1
    Hi, I'm trying to use LIBS technique to figure out elemental analysis of human nails. But every time i run the experiment, i get the emission line of metal instead. The sample holder is indeed made up of metal. What should I do to overcome this problem?

    Since i have small size sample, I'm using focusing lens with fl 15cm to focus the laser but there's no spark. Should i stop using lens? or should i use lens with different fl? Thanx!
     

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    Last edited: Sep 13, 2015
  2. jcsd
  3. Sep 18, 2015 #2
    Ive never used LiBS but try
    -increasing your sample volume
    -having the laser focus only on the sample
    -run a baseline with no sample and subtract this baseline signal from the sample measurement
     
  4. Oct 4, 2015 #3
    thank you for your advice.
     
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