Studies on elution conditions for the determination of anions by supressed ion-interaction chromatography using a graphitized carbon column

The principle of pooled calibrations and outlier retainment elucidates optimum performance of ion chromatography

“…Thus, the concentration range stretching from 3.1 mg L −1 to 1080 mg L −1 represents a useful working range, and the LLA corresponds to the concentration where the RSD is 50%. The linear range differs very much from the findings of Kumar et al [7], Miskaki et al [4] and Okamoto et al [27] but it compares well with the results of Ding et al [9] (Table 1). At higher concentrations, the RSD increased slightly up to approx.…”

“…[29] achieved a practical detection limit of staggering 0.05 g L −1 for determination of bromate. In this context it is very surprising indeed that Okamoto et al [27] were able to obtain a bromide-LOQ of only 3 g L −1 using a column of graphitized carbon without a step of preconcentration.…”

The Utilization of Triacontyl-Bonded Silica Coated with Imidazolium Ions for Capillary Ion Chromatographic Determination of Inorganic Anions

“…Jiang et al utilized conventional silica columns to modify the particle surface with cetyltrimethylammonium ions [29]. In addition, polystyrene-divinylbenzene polymers [2][3][4][5][6]30,31] and graphitized carbon [23,[32][33][34][35] were utilized. The quaternary ammonium salts included the salts of different tetraalkylammonium [9][10][11][12][13][14][15][16][17][18]21,[24][25][26][27]29,30,[32][33][34], n-cetylpyridinium [2][3][4][5]8,18,19,27,30,34], cationic dyes [6,7], and polyethyleimine [36].…”

Ion Chromatography of Inorganic Anions on Graphitic Carbon as the Stationary Phase

“…PGC columns dynamically modified with o-cresolphthalein have been employed for the determination of calcium and magnesium ions in seawater samples [13]. On the other hand, Okamoto et al [14,15] separated inorganic anions on PGC in ion interaction chromatography mode using tetrabutylammonium hydroxide as the ion interaction agent.…”