Effect of Hydrophobic Substituent on Solvent Extraction of Copper(II) with 5-Alkyloxymethyl-8-quinolinol or 5-Dialkylaminomethyl-8-quinolinol and Separation of Copper(II)
Effect of Hydrophobic Substituent on Solvent Extraction of Copper(II) with 5-Alkyloxymethyl-8-quinolinol or 5-Dialkylaminomethyl-8-quinolinol and Separation of Copper(II)
复制标题
疏水取代基对 5-烷氧基甲基-8-羟基喹啉或 5-二烷基氨基甲基-8-羟基喹啉溶剂萃取铜(II)及分离铜(II)的影响
DOI：
10.2116/analsci.1.467
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发表时间：
1985
影响因子：
1.6
通讯作者：
Katsuini Yamamoto
中科院分区：
文献类型：
--
作者：
K. Ohashi;S. Nakata;Masamichi Katsume;Keiji Nakamura;Katsuini Yamamoto
研究了疏水性的5-二辛氨甲基-8-羟基喹啉（HN_8 Q）和5-辛氧甲基-8-羟基喹啉（HO_8 Q）对Cu（II）、Co（II）、Ni（II）、Zn（II）、Pb（II）、Fe（III）等金属离子的萃取性能。即使在pH值为1.9的氯仿中，用0.01 mol dm^-3的HN_8 Q或HO_8Q也能完全萃取铜（II），而在相同条件下，钴（II）、镍（II）、铅（II）和锌（M）根本不能被萃取。用这些萃取剂对铜（II）的萃取率很大，而在相同的pH区域对其他金属离子的萃取率非常小。通过调节pH值至1.9进行萃取，然后用0.5 mol dm^-3的硝酸溶液在氯仿中从铜（II）-HO_8Q中反萃取铜（II），实现了铜（II）与铁（III）的完全分离。随着烷氧基甲基或二烷基氨基的碳原子数的增加，铜的萃取-pH曲线向较低的pH区域移动。
The extraction of metal ions (Cu(ll), Co(ll), Ni(ll), Zn(ll), Pb(ll), Fe(lll)) with hydrophobic 5-dioctylaminomethyl-8-quinolinol (HN_8Q) and 5-octyloxymethyl-8-quinotinol (HO_8Q), which were newly synthesized, was investigated. Copper)II) was completely extracted with 0.01 mol dm^-3 HN_8Q or HO_8Q into chloroform even at pH 1.9, while cobalt(ll), nickel(ll), lead(ll), and zinc(M) were not extracted at all under the same conditions. The extraction rate for copper)II) with these extractants was large, whereas the rates for other metal ions were remarkably small at the same pH region. The complete separation of copper(ll) from iron(lll) was acieved by adjustng pH to 1.9 for the extraction and subsequently stripping copper(ll) from copper)II)-HO_8Q in chloroform with 0.5 mol dm^-3 nitric acid solution. The extraction-pH curves for copper)II) shifted to a lower pH region with increasing the number of carbon atoms of alkyloxymethyl or dialkylamino groups.