Supercritical fluid chromatography and extraction of fe(III) with hydroxamic acids

C. C. McSweeney; S. Hutchinson; S. Harris; J. D. Glennon

doi:10.1016/S0003-2670(97)00240-7

Supercritical fluid chromatography and extraction of fe(III) with hydroxamic acids

C. C. McSweeney
, S. Hutchinson
, S. Harris
, J. D. Glennon

Research output: Contribution to journal › Article › peer-review

Abstract

Representative aliphatic and aromatic mono-hydroxamic acids are shown to be separable by supercritical fluid chromatography (SFC) using methanol modified CO₂ on a diol column. Evidence for ligand contamination by Fe(III) from the SFC system is provided, as the ligands are detected as Fe(III) chelates at 420 nm. The ligands and chelates studied were octanohydroxamic acid (OHA), Fe(OHA)₃, benzohydroxamic acid (BHA), Fe(BHA)₃, heptanohydroxamic acid (HHA), Fe(HHA)₃, and a newly synthesised hydroxamic acid, perfluorooctanohydroxamic acid (PFOHA). When the ligands were examined using unmodified supercritical CO₂ (SF-CO₂) for their ability to extract Fe(III) from solid supports by supercritical fluid extraction (SFE), the fluorinated hydroxamic acid showed enhanced performance and solubility.

Original language	English
Pages (from-to)	93-99
Number of pages	7
Journal	Analytica Chimica Acta
Volume	346
Issue number	1
DOIs	https://doi.org/10.1016/S0003-2670(97)00240-7
Publication status	Published - 30 Jun 1997

Keywords

Hydroxamic acids
Iron
Supercritical fluid chromatography

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10.1016/S0003-2670(97)00240-7

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title = "Supercritical fluid chromatography and extraction of fe(III) with hydroxamic acids",

abstract = "Representative aliphatic and aromatic mono-hydroxamic acids are shown to be separable by supercritical fluid chromatography (SFC) using methanol modified CO2 on a diol column. Evidence for ligand contamination by Fe(III) from the SFC system is provided, as the ligands are detected as Fe(III) chelates at 420 nm. The ligands and chelates studied were octanohydroxamic acid (OHA), Fe(OHA)3, benzohydroxamic acid (BHA), Fe(BHA)3, heptanohydroxamic acid (HHA), Fe(HHA)3, and a newly synthesised hydroxamic acid, perfluorooctanohydroxamic acid (PFOHA). When the ligands were examined using unmodified supercritical CO2 (SF-CO2) for their ability to extract Fe(III) from solid supports by supercritical fluid extraction (SFE), the fluorinated hydroxamic acid showed enhanced performance and solubility.",

keywords = "Hydroxamic acids, Iron, Supercritical fluid chromatography",

author = "McSweeney, \{C. C.\} and S. Hutchinson and S. Harris and Glennon, \{J. D.\}",

year = "1997",

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doi = "10.1016/S0003-2670(97)00240-7",

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TY - JOUR

T1 - Supercritical fluid chromatography and extraction of fe(III) with hydroxamic acids

AU - McSweeney, C. C.

AU - Hutchinson, S.

AU - Harris, S.

AU - Glennon, J. D.

PY - 1997/6/30

Y1 - 1997/6/30

N2 - Representative aliphatic and aromatic mono-hydroxamic acids are shown to be separable by supercritical fluid chromatography (SFC) using methanol modified CO2 on a diol column. Evidence for ligand contamination by Fe(III) from the SFC system is provided, as the ligands are detected as Fe(III) chelates at 420 nm. The ligands and chelates studied were octanohydroxamic acid (OHA), Fe(OHA)3, benzohydroxamic acid (BHA), Fe(BHA)3, heptanohydroxamic acid (HHA), Fe(HHA)3, and a newly synthesised hydroxamic acid, perfluorooctanohydroxamic acid (PFOHA). When the ligands were examined using unmodified supercritical CO2 (SF-CO2) for their ability to extract Fe(III) from solid supports by supercritical fluid extraction (SFE), the fluorinated hydroxamic acid showed enhanced performance and solubility.

AB - Representative aliphatic and aromatic mono-hydroxamic acids are shown to be separable by supercritical fluid chromatography (SFC) using methanol modified CO2 on a diol column. Evidence for ligand contamination by Fe(III) from the SFC system is provided, as the ligands are detected as Fe(III) chelates at 420 nm. The ligands and chelates studied were octanohydroxamic acid (OHA), Fe(OHA)3, benzohydroxamic acid (BHA), Fe(BHA)3, heptanohydroxamic acid (HHA), Fe(HHA)3, and a newly synthesised hydroxamic acid, perfluorooctanohydroxamic acid (PFOHA). When the ligands were examined using unmodified supercritical CO2 (SF-CO2) for their ability to extract Fe(III) from solid supports by supercritical fluid extraction (SFE), the fluorinated hydroxamic acid showed enhanced performance and solubility.

KW - Hydroxamic acids

KW - Iron

KW - Supercritical fluid chromatography

UR - https://www.scopus.com/pages/publications/0030844627

U2 - 10.1016/S0003-2670(97)00240-7

DO - 10.1016/S0003-2670(97)00240-7

M3 - Article

AN - SCOPUS:0030844627

SN - 0003-2670

VL - 346

SP - 93

EP - 99

JO - Analytica Chimica Acta

JF - Analytica Chimica Acta

IS - 1

ER -

Supercritical fluid chromatography and extraction of fe(III) with hydroxamic acids

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Keywords

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