The 24th regional symposium of Malaysian analytical sciences (SKAM-24) : Analytical sciences spur intellectualism, 21-23 November, 2011, Padang Matsirat, Langkawi, Kedah / por Regional Symposium of Malaysian Analytical Sciences (24th 2011 : Kedah, Malaysia), Siti Hajar Alias, editor, Mohd. Lias Kamal, editor, Asnida Yanti Ani, editor, Nurul Zawani Alias, 1987-, editor, Nur Nasulhah Kasim, editor, Mohammad Hafiz Ismail, editor