Preconcentration of chromium(III) and chromium(VI) in sea water by complexation with quinolin-8-ol and adsorption on macroporous resin

Isshiki, Kenji; Sohrin, Yoshiki; Karatani, Hajime; Nakayam, Eiichiro

doi:10.1016/s0003-2670(00)83444-3

Cited by 78 publications

(18 citation statements)

References 15 publications

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“…The LC methods coupled with atomic absorption spectrometry (LC-AAS) [5], inductively coupled plasma atomic emission spectrometry (LC-ICP-AES) [6], and inductively coupled plasma mass spectrometry (LC-ICP-MS) [7] were successfully applied to the speciation of chromium in water samples. Generally, the speciation of chromium is performed after the separation of one species of chromium (III) and (VI) by sorption [8][9][10], solvent extraction [11], and co-precipitation [12,13], followed by the instrumental analysis, and the another species is then determined after reducing or oxidizing the residual chromium contained in the sample solutions. Hirata et al [9] used an iminodiacetate chelating resin for the collection/preconcentration of Cr (III) in seawater.…”

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On-line preconcentration using dual mini-columns for the speciation of chromium(III) and chromium(VI) and its application to water samples as studied by inductively coupled plasma-atomic emission spectrometry

Sumida

Ikenoue

Hamada

et al. 2005

Talanta

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On-line preconcentration system for the selective, sensitive and simultaneous determination of chromium species was investigated. Dual mini-columns containing chelating resin were utilized for the speciation and preconcentration of Cr (III) and Cr (VI) in water samples. In this system, Cr (III) was collected on first column packed with iminodiacetate resin. Cr (VI) in the effluent from the first column was reduced to Cr (III), which was collected on the second column packed with iminodiacetate resin. Hydroxyammonium chloride was examined as a potential reducing agent for Cr (VI) to Cr (III).The effects of pH, sample flow rate, column length, and interfering ions on the recoveries of Cr (III) were carefully studied. Five milliliters of a sample solution was introduced into the system. The collected species were then sequentially washed by 1M ammonium acetate, eluted by 2M nitric acid and measured by ICP-AES. The detection limit for Cr (III) and Cr (VI) was 0.08 and 0.15 ųg l -1 , respectively. The total analysis time was about 9.4 min. The developed method was successfully applied to the speciation of chromium in river, tap water and wastewater samples with satisfied results.

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confidence: 99%

On-line preconcentration using dual mini-columns for the speciation of chromium(III) and chromium(VI) and its application to water samples as studied by inductively coupled plasma-atomic emission spectrometry

Sumida

Ikenoue

Hamada

et al. 2005

Talanta

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“…For this purpose, various separation and preconcentration methods, such as liquid-liquid extraction, 2,3 coprecipitation, 4,5 ion exchange, 6-8 adsorption [9][10][11][12] and solid-phase extraction, 10,[13][14][15] have been developed. In recent years, several methods for the preconcentration and separation of Cr(III) and Cr(VI) have been developed by using a micelle-mediated methodology.…”

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Preconcentration and Speciation of Chromium in Water Samples by Atomic Absorption Spectrometry after Cloud-Point Extraction

et al. 2003

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“…For this purpose, various separation and pre-concentration methods such as liquid-liquid extraction 1,6 , coprecipitation 3,7 , ion exchange [8][9][10] and adsorption [11][12][13][14] have been developed. Sugiyama et al 6 determined trace elements including chromium in natural waters by ICP OES after preconcentration by dithiocarbamate extraction.…”

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A novel method for fast enrichment and monitoring of hexavalent and trivalent chromium at the ppt level with modified silica MCM-41 and its determination by inductively coupled plasma optical emission spectrometry

et al. 2006

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Recebido em 12/1/05; aceito em 25/8/05; publicado na web em 16/2/06 Chromium(III) at the ng L -1 level was extracted using partially silylated MCM-41 modified by a tetraazamacrocyclic compound (TAMC) and determined by inductively coupled plasma optical emision spectrometry (ICP OES). The extraction time and efficiency, pH and flow rate, type and minimum amount of stripping acid, and break-through volume were investigated. The method's enrichment factor and detection limit are 300 and 45.5 pg mL -1 , respectively. The maximum capacity of the 10 mg of modified silylated MCM-41 was found to be 400.5±4.7 µg for Cr(III). The method was applied to the determination of Cr(III) and Cr(VI) in the wastewater of the chromium electroplating industry and in environmental and biological samples (black tea, hot and black pepper).

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Preconcentration of chromium(III) and chromium(VI) in sea water by complexation with quinolin-8-ol and adsorption on macroporous resin

Cited by 78 publications

References 15 publications

On-line preconcentration using dual mini-columns for the speciation of chromium(III) and chromium(VI) and its application to water samples as studied by inductively coupled plasma-atomic emission spectrometry

On-line preconcentration using dual mini-columns for the speciation of chromium(III) and chromium(VI) and its application to water samples as studied by inductively coupled plasma-atomic emission spectrometry

Preconcentration and Speciation of Chromium in Water Samples by Atomic Absorption Spectrometry after Cloud-Point Extraction

A novel method for fast enrichment and monitoring of hexavalent and trivalent chromium at the ppt level with modified silica MCM-41 and its determination by inductively coupled plasma optical emission spectrometry

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