Selective Determination of Tin (II) Ion in Water by Solvent Extraction with Salicylidenamino‐2‐thiophenol Followed by Reversed‐Phase High‐Performance Liquid Chromatography with Photometric Detection

Ichinoki, Susumu; Iwase, Hatsumi; Arakawa, Fumio; Hirano, Kanami; Fujii, Youichi

doi:10.1081/jlc-120025429

Cited by 24 publications

(7 citation statements)

References 10 publications

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“…The authors have reported metal determination methods by reversed phase HPLC with photometric detection using dithiocarbamate, [6,7] b-diketones, [8,9] salicylideneamino-2-thiophenol, [10] and a-furil dioxime [11] as precolumn chelating reagents.…”

Section: Selective and Sensitive Determination Of Mercury(ii) Ions Inmentioning

confidence: 99%

Selective and Sensitive Determination of Mercury(II) Ions in River Water by an Automatic HPLC System Combined with On-Line Column Enrichment as 2-Mercaptopyrimidine Chelate

Ichinoki

Kodani

Fujii

2009

Journal of Liquid Chromatography & Related Technologies

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A selective and sensitive determination method for mercury (Hg) ions in river water by reversed phase high performance liquid chromatography (HPLC) has been developed. Two mL of water sample containing Hg(II) ions was put into a 4 mL sample tube. To the sample tube, 500 mL of 2 mol=L (M) acetate buffer solution (pH 4.5), and 50 mL of 0.01 M 2-mercaptopyrimidine (MP) were added to form a neutral Hg chelate. The Hg chelate subsequently became preconcentrated in a reversed phase mini column. By switching the valve, the Hg chelate was separated and detected at 255 nm. These processes occur automatically, except for the addition of water samples, buffer, and MP solutions. The correlation coefficients of the calibration curves obtained with 2 mL of mercury standard were more than 0.999 over the range of 20 ng=mL (ppb) to 10 mg=mL (ppm). The detection limit of Hg ions in 2 mL solution was 1.6 ppb, which corresponded to 3 times the standard deviation (N ¼ 10) of the blank peak area. Effects of foreign ions on the determination of 0.2 ppm Hg were investigated with 57 metal ions. Almost none of the ions interfered except for Au(III), Pd(II), Ag(I), and Co(II) ions. The recoveries with spiked river water samples for 5, 0.5, and 0.05 Hg ion (N ¼ 7) were 99.7 AE 0.4%, 100.3 AE 0.3%, and 100.7 AE 0.7%, respectively.

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Section: Selective and Sensitive Determination Of Mercury(ii) Ions Inmentioning

confidence: 99%

Selective and Sensitive Determination of Mercury(II) Ions in River Water by an Automatic HPLC System Combined with On-Line Column Enrichment as 2-Mercaptopyrimidine Chelate

Ichinoki

Kodani

Fujii

2009

Journal of Liquid Chromatography & Related Technologies

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“…We also determined various metal ions by HPLC as metal chelates combined with solvent extraction. [6][7][8][9][10][11] We found that the Au(III) ion was extracted into benzene from a weak alkaline solution as Au-TTM chelate. The Au ion gave two chromatographic peaks: first peak is a tailing peak and second peak was a symmetrical peak.…”

Section: Introductionmentioning

confidence: 95%

Selective Determination of Gold Ion in River Water by Solvent Extraction With 2-Thiazolidinethione, 4-(1-Methylethyl)-, (4s)-, Followed by Reversed Phase HPLC

Ichinoki

2012

Journal of Liquid Chromatography & Related Technologies

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& A determination method for gold (Au) ion in river water has been developed by reversed phase HPLC. The Au(III) ion was quantitatively extracted into benzene from a weak alkaline solution as 2-thiazolidinethione, 4-(1-methylethyl)-, (4S)-(TTM) chelate. The extracted Au-TTM chelate was then separated on a C 18 column with an eluent of methanol=ethanol= 0.01 mol=L TTM (70:30:0.1, v=v) and detected at 270 nm. The correlation coefficients of the calibration curves obtained with 5 mL Au standards were more than 0.999 in the range of 1 lg=mL (ppm) to 10 ppm. The detection limit of the Au ion in 5 mL of water was estimated as 0.08 ppm, by a signal-to-noise ratio (S=N) ¼ 3. Relative standard deviations of peak areas (n ¼ 6) for 5 ppm Au standards was 1.0%. The recoveries with a spiked river water sample for 5 ppm Au ion (n ¼ 6) was 99.2 AE 0.6%. Effects of foreign ions on the determination of 2 ppm Au were investigated with 57 metal ions. Almost none of the ions interfered except for Ag(I), Cd(II), and Ti(IV) ions.

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“…The development of a highly sensitive expedient and readily accessible tool is the greatest requirement. However, various methods have already been performed to detect Sn(II) 14 – 20 , fluorimetric and colorimetric sensing method is one of the simplest and convenient sensing methods over other established detection techniques because it offers the advantage of ‘on spot’ real-time detection with naked eyes, low cost, portable, and wide applicability 21 – 29 . Hence, inspired with the requirement of active colorimetric probes, herein, we report the synthesis and sensing behavior of a novel colorimetric probe carbazole-naphthaldehyde conjugate (CNP) that exhibits high selectivity and sensitivity toward Sn 2+ in the neutral aqueous medium (10 mM phosphate buffer, pH 7.0).…”

Section: Introductionmentioning

confidence: 99%

A handy and accessible tool for identification of Sn(II) in toothpaste

Kundu

Truong

Saha

et al. 2022

Sci Rep

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An easily accessible colorimetric probe, a carbazole–naphthaldehyde conjugate (CNP), was successfully prepared for the selective and sensitive recognition of Sn(II) in different commercially-available toothpaste and mouth wash samples. The binding mechanism of CNP for Sn2+ was confirmed by UV–Vis, 1H, and 13C NMR titrations. The proposed sensing mechanism was supported by quantum chemical calculations. Selective detection of Sn(II) in the nanomolar range (85 nM), among other interfering metal ions, makes it exclusive. Moreover, Sn2+ can be detected with a simple paper strip from toothpaste, which makes this method handy and easily accessible. The potential application of this system for monitoring Sn2+ can be used as an expedient tool for environmental and industrial purposes.

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Selective Determination of Tin (II) Ion in Water by Solvent Extraction with Salicylidenamino‐2‐thiophenol Followed by Reversed‐Phase High‐Performance Liquid Chromatography with Photometric Detection

Cited by 24 publications

References 10 publications

Selective and Sensitive Determination of Mercury(II) Ions in River Water by an Automatic HPLC System Combined with On-Line Column Enrichment as 2-Mercaptopyrimidine Chelate

Selective and Sensitive Determination of Mercury(II) Ions in River Water by an Automatic HPLC System Combined with On-Line Column Enrichment as 2-Mercaptopyrimidine Chelate

Selective Determination of Gold Ion in River Water by Solvent Extraction With 2-Thiazolidinethione, 4-(1-Methylethyl)-, (4s)-, Followed by Reversed Phase HPLC

A handy and accessible tool for identification of Sn(II) in toothpaste

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