Wang, Y., Jun Ren, G. and Zhang, D. (2014) “Determination of Trace Zinc in Water by Flame Atomic Absorption Spectrometry After Preconcentration by Modified Organobentonite with 1-(2-Pyridylazo)-2-naphthol”, Asian Journal of Chemistry, 26(14), pp. 4442–4444. doi: 10.14233/ajchem.2014.16871.