Determination of arsenic(V) as a heteropoly acid after its adsorption on a fibrous anion exchanger

被引：9

作者：

Dedkova, VP ^{[1
]}

Shvoeva, OP ^{[1
]}

Savvin, SB ^{[1
]}

机构：

[1] Russian Acad Sci, Vernadsky Inst Geochem & Analyt Chem, Moscow 117975, Russia

来源：

JOURNAL OF ANALYTICAL CHEMISTRY | 2002年 / 57卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1023/A:1014990028794

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The conditions were found for determining arsenic(V) as a heteropoly acid after its adsorption on a fibrous anion exchanger. A blue form of a molybdoarsenic heteropoly acid formed on the adsorbent at any order of the adsorption of the reactants; however, the sensitivity of determination was higher if arsenic was adsorbed first. A detection limit of 4 ng/mL was attained using adsorption from a 100-mL portion of a test solution. The sensitivity and selectivity of the proposed method are significantly higher than those of known methods because of the preconcentration of arsenate ions on an anion exchanger as a heteropoly acid followed by the direct determination of the heteropoly acid in the solid phase.

引用

页码：298 / 302

页数：5

共 15 条

[1]

ABBAS MN, 1992, ANAL P, V29, P372

[2]

ABRAZHEEV RV, 1999, ZH ANAL KHIM, V54, P1251

[3]

ANDREEVA IY, 1992, ZH ANAL KHIM, V47, P383

[4] Sorption of arsenic, bismuth, mercury, antimony, selenium and tin on dithiocarbamate loaded polyurethane foam as a preconcentration method for their determination in water samples by simultaneous inductively coupled plasma atomic emission spectrometry and electrothermal atomic absorption spectrometry [J].

Arpadjan, S ;

Vuchkova, L ;

Kostadinova, E .

ANALYST, 1997, 122 (03) :243-246

[5]

BOGDANOVA VI, 1984, MIKROCHIM ACTA, V2, P317

[6]

BUTENKO GA, 1961, ZH ANAL KHIM, V16, P692

[7]

LURE YY, 1974, KHIMICHESKII ANAL PR

[8]

Marhol M., 1982, Ion Exchangers in Analytical Chemistry: Their Properties and Use in Inorganic Chemistry, DOI 10.1016/B978-0-444-99717-3.50010-3

[9]

Nemodruk A. A., 1976, Analiticheskaya khimiya mysh'yaka (the analytical chemistry of arsenic)

[10]

PERELOMAN AI, 1982, GEOKHIMIYA LANDSHAFT

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