Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10529700 | Analytica Chimica Acta | 2005 | 9 Pages |
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 of trace amounts of elements on the CCTS-DBA resin was examined by the pretreatment with a mini-column and measurement of the elements by inductively coupled plasma-Mass spectrometry (ICP-MS). Arsenic(V) could be retained on the CCTS-DBA resin at pH 3 as an oxoanion of H2AsO4â. Selenium(VI) is strongly adsorbed at pH 2 and pH 3 as an oxoanion of SeO42â, while selenium(IV) as HSeO3â is adsorbed on the resin at pH 3. The sorption capacities are 82, 64, and 88 mg gâ1resin for As(V), Se(IV), and Se(VI), respectively. The effect of common anions and cations on the adsorption of As(V), Se(IV), and Se(VI) were studied; there was no interference from such anionic matrices as chloride, sulfate, phosphate, and nitrate up to 20 ppm, as well as from such artificial river water matrices as Na, K, Mg, and Ca after passing samples through the mini-column containing the resin. The CCTS-DBA resin was applied to the collection of arsenic and selenium species in bottled drinking water, tap water, and river water.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Akhmad Sabarudin, Koji Oshita, Mitsuko Oshima, Shoji Motomizu,