Bulletin of the Korean Chemical Society

  • 제29권1호
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  • Pages.99-103
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  • 2008
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Studies on Solvent Extraction Using Salphen for Separative Determination of Trace Fe(II) and Fe(III) in Water Samples

  • 발행 : 2008.01.20
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초록

Solvent extraction using salphen as a ligand has been investigated for the selective separation and determination of trace Fe(II) and Fe(III). A salphen ligand was synthesized, and solvent extraction variables, such as solution pH, the concentration of salphen, the type of organic solvent, auxiliary agents, oxidants and the effect of interference were optimized. Salphen is stable at pH 3-4, and Fe(III)-salphen complexes can be selectively extracted into an MIBK(4-methyl-2-pentanone) phase from an aqueous solution within this pH range. For the determination of the total amount of iron in 100 mL of aqueous solution, Fe(II) ions were completely oxidized using 0.05 mL of 3.5% H2O2 without side reactions. To evaluate its applicability, the proposed method was applied to determine trace Fe(II) and Fe(III) in several kinds of water samples. Reproducible results were obtained with RSD of less than 3.0%, and the recoveries for this reliability were obtained with 91-112%.

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참고문헌

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  2. Spectrophotometric Quantitative Analysis of Cu(II) Ion Using N,N'-bis(4-methoxysalicylidene)phenylendiamine vol.56, pp.2, 2012, https://doi.org/10.5012/jkcs.2012.56.2.228
  3. Study on Solvent Extraction Using Salen(NEt2)2 as a Chelating Agent for Determination of Trace Cu(II), Mn(II), and Zn(II) in Water Samples vol.29, pp.5, 2008, https://doi.org/10.5012/bkcs.2008.29.5.969
  4. 치환기를 가진 다섯 자리 질소-산소 (N2O3)계 리간드의 합성 및 전이금속(II) 이온과의 착물 안정도상수 결정 vol.18, pp.7, 2008, https://doi.org/10.5322/jes.2009.18.7.735
  5. N,N'-bis(4-methoxysalicylidene) phenylendiamine를 이용한 Fe(II) 및 Fe(III) 이온의 분광학적 분석 vol.55, pp.3, 2008, https://doi.org/10.5012/jkcs.2011.55.3.463
  6. Solvometallurgical process for extraction of copper from chalcopyrite and other sulfidic ore minerals vol.22, pp.2, 2008, https://doi.org/10.1039/c9gc02983d