Preconcentration determination of inorganic anions and organic acids in power plant waters separation optimization through control of column capacity and selectivity

Toofan, Mahmood; Stillian, John R.; Pohl, Christopher A.; Jackson, Paul

doi:10.1016/s0021-9673(96)00842-4

Cited by 22 publications

(2 citation statements)

References 18 publications

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“…This allowed the universal determination of ions at parts-per-million levels at a rate of 1−3 ions/min. Since 1975, there have been continuous advances in the technique, which has resulted in IC being implemented by a number of industries for the separation and analysis of ions in a wide range of matrixes. − …”

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Improved Sensitivity and Characterization of High-Speed Ion Chromatography of Inorganic Anions

Hatsis

Lucy

2003

Anal. Chem.

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In this work, a reversed-phase monolithic column was permanently coated with didodecyldimethylammonium bromide (DDAB) to perform ultrafast separations of iodate, chloride, nitrite, bromide, nitrate, phosphate, and sulfate in as little as 30 s. Separations were performed using 6 mM o-cyanophenol (pH 7.0) at flow rates up to 10 ml/min and suppressed conductivity detection. Detection limits in the parts-per-billion range were observed for all anions studied (e.g., ranging from 30 ppb for phosphate to 4 ppb for sulfate). The reproducibility was 0.7 and 0.4% RSD for retention time and peak area, respectively. Coated columns were stable for up to 12 h of continuous use at 5 mL/min (i.e., 1-min separations).

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Improved Sensitivity and Characterization of High-Speed Ion Chromatography of Inorganic Anions

Hatsis

Lucy

2003

Anal. Chem.

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“…Everyday, a number of industries, e.g., power, environmental, food and beverage, electronics, petrochemical, rely on ion chromatography for the separation and analysis of ions in a wide range of matrices. [4][5][6][7][8][9] Real-time monitoring (or at least higher sample throughput in the lab) would mean increased operating efficiency, lower costs and ultimately larger profits. 2 The impediment in realizing this goal is that ion chromatographic separations are usually performed in about 10 to 20 min.…”

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Ultra-fast HPLC separation of common anions using a monolithic stationary phase

Hatsis

Lucy

2002

Analyst

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In this work, a monolithic column was used to perform ultrafast separations of common inorganic anions in as little as 15 seconds. Separations were performed using ion-interaction chromatography with tetrabutylammonium-phthalate as the ion-interaction reagent and were monitored using either direct conductivity or indirect absorbance detection. Detection limits for direct conductivity were in the low ppm range, whereas those for indirect absorbance detection were up to an order of magnitude higher. The reproducibility was 0.4% and 2% RSD for retention time and peak area, respectively, for a one minute separation, and 2.8% and 3-15%, respectively, for the 15 second separation. The proposed method was validated versus standard ion chromatography with suppressed conductivity detection for the analysis of an industrial water sample.

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Quality control procedures for chloride and nitrate ions analysis in plant samples by ion chromatography

Masson¹,

Raemaeker²,

Bon³

2005

Accred Qual Assur

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Preconcentration determination of inorganic anions and organic acids in power plant waters separation optimization through control of column capacity and selectivity

Cited by 22 publications

References 18 publications

Improved Sensitivity and Characterization of High-Speed Ion Chromatography of Inorganic Anions

Improved Sensitivity and Characterization of High-Speed Ion Chromatography of Inorganic Anions

Ultra-fast HPLC separation of common anions using a monolithic stationary phase

Quality control procedures for chloride and nitrate ions analysis in plant samples by ion chromatography

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