Abstract：The flotation separation behaviour of copper with potassium iodide-ascorbic acid-tetradecyl trimethyl ammionium bromide system was studied.The effects of the dosages of KI, tetradecyl trimethyl ammionium bromide (TTMAB), ascorbic acid(Vc) and acidity etc on the flotation yield of Cu2+ have been investigated.The possible flotation separation mechanism of Cu2+ was discussed.The results showed that under optimum conditions, Cu2+ could be reduced to Cu+ by Vc, the precipitation of CuI, which was formed by Cu+ reacted with I-, was floated to upper water phase by TTMAB, and the liquid-solid phases were formed with clear interface. The quantitatively separation of Cu2+ from Zn2+、Co2+、Al3+、Mn2+、Ni2+、Fe2+ was achieved by flotation. Accordingly, a new method for the flotation separation of trace Cu2+ was established. The proposed method has been applied to the flotation separation of trace Cu2+ in various environmental water samples with the recovery of 97%-104%.
Tu C Q, Wen X R.study on separation/enrichment of copper using microcrystalline phenolphthalein loaded with cupferron[J]. Adv. Mater.Res., 2013, 807-809:456-460.
[9]
何海诚, 巨振海. 利用吸附有双硫腙的微晶萘萃取色层富集-火焰原子吸收光谱法测定天然水中痕量铜[J]. 光谱学与光谱分析(Spectroscopy and Spectral Analysis), 1998, 18(6):724-726.
Li Q M, Zhao X H, Guan X, et al. A novel method of the separation/preconcentration and determination of trace molybdenum in water samples using microcrystalline triphenylmethane loaded with salicyl fluorone[J]. Anal.Chim.Acta., 2006, 562: 44-50.
