Duangkum, Tanawat, 		Masawat, Prinya, AND 		Udnan, Yuthapong.
" Development of eggshell membrane as solid phase adsorbent for Cd(II), Pb(II) and Ni(II) coupled with flame atomic absorption spectrometry" <em>Naresuan University Journal: Science and Technology (NUJST)</em> [Online], Volume 19 Number 3 (25 July 2013)