How do we calculate nanoparticle number concentration in a liquid sample theoretically?
Hello Arum, in the case of gold nanoparticles you could use this paper as a reference.
https://pubs.acs.org/doi/abs/10.1021/ac0702084
I hope the paper below is helpful
http://pubs.rsc.org/-/content/articlepdf/2014/an/c4an00978a
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