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 plasma-mass spectrometry
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 plasma-mass spectrometry
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DOI：
10.1016/j.aca.2005.03.070
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发表时间：
2005-06-29
影响因子：
6.2
通讯作者：
Motomizu, S
中科院分区：
文献类型：
--
作者：
Sabarudin, A;Oshita, K;Motomizu, S
以交联壳聚糖（CCTS）为基料，合成了3,4-二氨基苯甲酸功能化壳聚糖树脂（CCTS- dba树脂）。采用微型柱前处理和电感耦合等离子体质谱法（ICP-MS）测定了CCTS-DBA树脂对微量元素的吸附行为。在pH为3的条件下，砷(V)可以作为H(2)ASO(4)（-）的氧阴离子保留在CCTS-DBA树脂上。硒（VI）在pH为2和pH为3时，作为SeO42-的氧阴离子被强吸附。而硒（IV）在pH为3时以HSeO3-的形式吸附在树脂上。对砷(V)、硒（IV）和硒（VI）的吸附量分别为82、64和88 mg g（-1）树脂。研究了常见阴离子和阳离子对吸附As(V)、Se（IV）和Se（VI）的影响；在将样品通过含有树脂的微型柱后，没有氯离子、硫酸盐、磷酸盐和高达20ppm的硝酸盐等阴离子基质以及Na、K、Mg和Ca等人工河水基质的干扰。采用CCTS-DBA树脂对瓶装饮用水、自来水和河水中的砷和硒进行了测定。(c) 2005 Elsevier B.V.版权所有
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 H(2)ASO(4)(-). Selenium(VI) is strongly adsorbed at pH 2 and pH 3 as an oxoanion of SeO42-. while selenium(IV) as HSeO3- is adsorbed on the resin at pH 3. The sorption capacities are 82, 64, and 88 mg g(-1) resin 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. (c) 2005 Elsevier B.V. All rights reserved.