Separations of trace elements from sea water, brine and sodium and magnesium salt solutions by chromatography on chitosan

doi:10.1016/0021-9673(70)80061-9

Journal of Chromatography A

Volume 47, 1970, Pages 414-420

https://doi.org/10.1016/0021-9673(70)80061-9 Get rights and content

Abstract

Chitosan, a chelating polymer, has been used to collect traces of transition elements from salt solutions and sea water by column chromatography. Chitosan can be favorably compared with the chelating resin Chelex®, and it is proposed as a chelating chromatographic support suitable for pollution detection survey and abatement, for waste water purification and recovery of trace metal ions for analytical purposes.

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Citation Excerpt :
A prevailing portion of the research data on the interactions between chitin/chitosan and metal ions refer to laboratory conditions involving purified chitin/chitosan, pure salts, demineralized water or filtered seawater. Under these conditions early research has demonstrated the indifference of alkali and alkali-earth metal ions to chitosan, and concomitant chelation of a number of transition metal ions according to the complex stability series of Irving and Williams (1953), with retention of a certain degree of crystallinity of the polysaccharide as evidenced by X-ray diffraction measurements (Muzzarelli & Sipos, 1971; Muzzarelli & Tubertini, 1969; Muzzarelli, Raith, & Tubertini, 1970). When complicated conditions are faced or enhanced performances are desired, the chitosan can be derivatized chemically or enzymatically to impart enhanced chelating capacity, or can be prepared as composites (for example with cellulose or with calcium carbonate); raw chitinous materials can be used such as spent fungal mycelia and clean crustacean shells; the aqueous solutions can be made to simulate various fluids of industrial or biochemical interest, and field conditions may vary from sea floor to polluted lakes.
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Coprecipitation of ruthenium with chitosan and its determination by graphite furnace atomic absorption spectrometry
1999, Analytica Chimica Acta
A coprecipitation method with chitosan was studied for the determination of ruthenium in water samples by graphite furnace atomic absorption spectrometry. Ruthenium (0.1–5.0 μg) is coprecipitated quantitatively from a aqueous sample solution (100–1000 cm³) with chitosan at pH 7.5–8.5. After the coprecipitate was separated by centrifuging from the aqueous sample solution, it was dissolved in 1.0 cm³ of 1.0 mol dm⁻³acetic acid and diluted to 5.0 cm³ with water. An aliquot of the resulting solution was injected into the graphite furnace. The calibration graph by the proposed method was linear up to 5.0 μg dm⁻³, and the detection limit (S/N = 3) for ruthenium was 0.06 μg dm⁻³. The relative standard deviation at 1.0 μg dm⁻³ was 3.0–4.0% (n = 5). The proposed method was applied to the determination of trace amounts of ruthenium in water samples.

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^☆: Paper presented at the Meeting on Analytical Methodology, sponsored by the C.N.R., Rome, Italy, December 1969.

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Separations of trace elements from sea water, brine and sodium and magnesium salt solutions by chromatography on chitosan☆

Abstract

Talanta

Anal. Chim. Acta

Z. Anal. Chem.

Bunseki Kagaku

Chem. Anal.

Proc. Pitt. Conf. Anal. Chem.

Anal. Chem.