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Synthesis of a chitosan-based chelating resin and its application to the selective concentration and ultratrace determination of silver in environmental water samples
A novel chelating resin using chitosan as a base material, ethylenediamine-type chitosan, has been synthesized for the first time in the present study, and applied to the collection/concentration ofExpand
Synthesis of cross-linked chitosan possessing N-methyl-d-glucamine moiety (CCTS-NMDG) for adsorption/concentration of boron in water samples and its accurate measurement by ICP-MS and ICP-AES.
The CCTS-NMDG resin shows high ability in boron sorption with the capacity of 0.61mmolml(-1) and the sorption kinetics of this resin was faster than that of the commercially available resins. Expand
Simple flow-injection system for the simultaneous determination of nitrite and nitrate in water samples.
The proposed spectrophotometric flow-injection system coupled with a copperised cadmium reductor column could be applied successfully to the simultaneous determination of nitrite and nitrate in water samples. Expand
Synthesis of chitosan resin possessing 3,4-diamino benzoic acid moiety for the collection/concentration of arsenic and selenium in water samples and their measurement by inductively coupled
Abstract A chitosan resin functionalized with 3,4-diamino benzoic acid (CCTS-DBA resin) was newly synthesized by using a cross-linked chitosan (CCTS) as base material. The adsorption behavior ofExpand
Determination of total and dissolved amount of iron in water samples using catalytic spectrophotometric flow injection analysis.
The amounts of free iron were detected using a catalytic action of Fe(III) and Fe(II) on the oxidation of N,N-dimethyl-p-phenylenediamine in the presence of hydrogen peroxide. Expand
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
The developed method was successfully applied to the speciation of chromium in river, tap water and wastewater samples with satisfied results. Expand
Functionalization of chitosan with 3,4-dihydroxybenzoic acid for the adsorption/collection of uranium in water samples and its determination by inductively coupled plasma-mass spectrometry.
The CCTS-DHBA resin was applied to the adsorption/collection of uranium in tap water, river water and seawater samples with satisfactory results, and the validation of the proposed method showed good agreement with the certified values. Expand
Purification and properties of isozymes of glutaminase from Pseudomonas aeruginosa.
The purification of glutaminase from the cell-free extract of Pseudomonas aeruginosa, and the occurrence of two isozymes are described, describing the formation of the hydroxamates from these substrates. Expand
Sequential-injection on-line preconcentration using chitosan resin functionalized with 2-amino-5-hydroxy benzoic acid for the determination of trace elements in environmental water samples by
The proposed system provides excellent on-line collection efficiency, as well as high concentration factors of analytes in water samples, which results in highly sensitive detection of ultra-trace and trace analysis. Expand
Adsorption Behavior of Metal Ions on Cross-linked Chitosan and the Determination of Oxoanions after Pretreatment with a Chitosan Column
The adsorption behavior of 60 elements at the 10 ng ml(-1) level on high-porous cross-linked chitosan in a packed mini-column was systematically examined. The chitosan used could adsorb anionicExpand