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Extraction behavior and selective separation of lead(II) using $$N$$,$$N$$-dioctyldiglycol amic acid

Shimojo, Kojiro   ; Nakai, Ayaka; Okamura, Hiroyuki   ; Ohashi, Akira*; Naganawa, Hirochika  

Selective separation of lead ions (Pb$$^{2+}$$) from aqueous solutions containing multiple divalent metal ions (Pb$$^{2+}$$, Cu$$^{2+}$$, Cd$$^{2+}$$, Zn$$^{2+}$$, Mn$$^{2+}$$, Co$$^{2+}$$ and Ni$$^{2+}$$) was investigated using liquid-liquid extraction. $$N$$,$$N$$-dioctyldiglycol amic acid (DODGAA) enabled quantitative extraction and efficient separation of Pb$$^{2+}$$ from the metal ion mixture under mildly acidic conditions. Compared with conventional commercial extractants, DODGAA provided better extraction and excellent selectivity for Pb$$^{2+}$$. The extraction of Pb$$^{2+}$$ with DODGAA proceeded through a proton-exchange reaction and formed a 1:2 complex, Pb(DODGAA)2. The Pb$$^{2+}$$ was readily stripped from the extracting phase under acidic conditions, and the organic solution with DODGAA could be recycled.

Language

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English

Journal

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Analytical Sciences

Volume

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29

Number

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1

Pages

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p.147 - 150

Publication Year/Month

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2013/01

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Held date

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Patent information

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Paper URL

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https://doi.org/10.2116/analsci.29.147

DOI for research data

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Keywords

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no keyword

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

InCites™

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Percentile:42.64

Category:Chemistry, Analytical

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