メチルセロソルブを用いる微量亜銘,銅(2)の水酸化鉄共沈浮選(ノート)

概要

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Flotation with iron(III) hydroxide and methyl cellosolve has been proposed for the separation of the low ppb levels of zinc and copper(II) in water. Methyl cellosolve is a new collector to float iron(III) hydroxide, and this method is more rapid and convenient than filtration or centrifugation of the iron(III) hydroxide precipitates, especially those in a large volume of solution. Iron(III), 550 mg, is added to 2001000 ml of water sample, and the pH is adjusted to 8.18.3 to precipitate iron(III) hydroxide. After the addition of 220 ml of methyl cellosolve, the precipitate involving the desired trace element is floated to the surface by bubbling nitrogen into the water through a sintered-glass disc (No. 4). The floated precipitate is transferred and filtered through filter paper(No. 5C) with the aid of a pipet, and then dissolved in 6 M hydrochloric acid. Microgram quantities of zinc and copper(II) can be separated in the yield better than 96% by the proposed method.
社団法人日本分析化学会の論文