Conductivity and indirect UV absorption detection of inorganic cations in non-suppressed ion chromatography using aromatic bases as eluents

Foley, Roy; Haddad, Paul R.

doi:10.1016/s0021-9673(01)93451-x

Cited by 43 publications

(10 citation statements)

References 15 publications

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“…10 4 ) with a number of metal ions which spectra overlap extensively. The mutual interferences of metal ions can be diminished by application of suitable masking agents and various pH ranges [1][2][3][4][5][6][7][8] or multiple linear regression [9]. Derivative spectrophotometry offers an alternative approach to the enhancement of selectivity in the spectrophotometric analysis.…”

Section: Resultsmentioning

confidence: 99%

“…Of the different LC techniques, ion exchange has been the most frequently applied in the separation of metals. The usual detection technique is conductometry, although indirect photometric detection has also been described [2][3][4][5][6][7][8]. Several years ago, Sherman and Danielson [9] proposed spectrophotometric detection for the separation of alkaline and alkaline-earth-metals using cerium and copper as the mobile phases.…”

Section: Introductionmentioning

confidence: 99%

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Indirect flame atomic absorption detection for the liquid chromatographic separation of alkaline metals

Viñas

Campillo

López-Garcı́a³

et al. 1996

Analytical and Bioanalytical Chemistry

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Alkaline metals and ammonium ion are separated by cationic exchange liquid chromatography using a 60 microg ml(-1) aqueous copper solution as the mobile phase at 1.5 ml min(-1). Detection is carried out by measuring copper with an atomic absorption spectrometer directly interfaced to the chromatograph. A simple T-piece is used to compensate the difference between the nebulizer uptake rate and the chromatographic flow-rate with air. The method is applicable to the analysis of alkaline metals and ammonium in waters. Average recovery ( n = 16) was 100.3 +/- 4.0%.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Indirect flame atomic absorption detection for the liquid chromatographic separation of alkaline metals

Viñas

Campillo

López-Garcı́a³

et al. 1996

Analytical and Bioanalytical Chemistry

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show abstract

“…The maximum absorption wavelength of [EMIm] [BF 4 ] is around 220 nm, when [EMIm] [BF 4 ] is added to the mobile [31][32][33].…”

Section: Mechanism Of Indirect Uv Detectionmentioning

confidence: 99%

Ion chromatography with the indirect ultraviolet detection of alkali metal ions and ammonium using imidazolium ionic liquid as ultraviolet absorption reagent and eluent

Liu

2016

J of Separation Science

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Indirect ultraviolet detection was conducted in ultraviolet-absorption-agent-added mobile phase to complete the detection of the absence of ultraviolet absorption functional group in analytes. Compared with precolumn derivatization or postcolumn derivatization, this method can be widely used, has the advantages of simple operation and good linear relationship. Chromatographic separation of Li(+) , Na(+) , K(+) , and NH4 (+) was performed on a carboxylic acid base cation exchange column using imidazolium ionic liquid/acid/organic solvent as the mobile phase, in which imidazolium ionic liquids acted as ultraviolet absorption reagent and eluting agent. The retention behaviors of four kinds of cations are discussed, and the mechanism of separation and detection are described. The main factors influencing the separation and detection were the background ultraviolet absorption reagent and the concentration of hydrogen ion in the ion chromatography-indirect ultraviolet detection. The successful separation and detection of Li(+) , Na(+) , K(+) , and NH4 (+) within 13 min was achieved using the selected chromatographic conditions, and the detection limits (S/N = 3) were 0.02, 0.11, 0.30, and 0.06 mg/L, respectively. A new separation and analysis method of alkali metal ions and ammonium by ion chromatography with indirect ultraviolet detection method was developed, and the application range of ionic liquid was expanded.

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“…To date, a number of different eluents such as copper(II) (Small and Miller, 1982;Miyozaki et al, 1985), benzyltrimethylammonium , 1987), picolinic acid (Benson and Woo, 1984;Foley and Haddad, 1986), and benzylamine (Foley and Haddad, 1986) have been used for the separation of either inorganic or organic cations by IPC. All of these organic counterions are singly charged and would not be expected to be effective for the isocratic elution of both singly and multiply charged solute ions.…”

mentioning

confidence: 99%

Simultaneous determination of sodium, potassium, magnesium, and calcium ions in milk products by indirect photometric high-performance liquid chromatography

Sherman¹,

Danielson²,

Hazey³

1988

J. Agric. Food Chem.

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Conductivity and indirect UV absorption detection of inorganic cations in non-suppressed ion chromatography using aromatic bases as eluents

Cited by 43 publications

References 15 publications

Indirect flame atomic absorption detection for the liquid chromatographic separation of alkaline metals

Indirect flame atomic absorption detection for the liquid chromatographic separation of alkaline metals

Ion chromatography with the indirect ultraviolet detection of alkali metal ions and ammonium using imidazolium ionic liquid as ultraviolet absorption reagent and eluent

Simultaneous determination of sodium, potassium, magnesium, and calcium ions in milk products by indirect photometric high-performance liquid chromatography

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