Test method for the separate determination of mercury(II), cadmium, and lead in one sample on the fibrous sorbent PANV-AV-17

被引：0
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作者：
Dedkova, V.P. [1 ]
Shvoeva, O.P. [1 ]
Savvin, S.B. [1 ]
机构：
[1] Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, ul. Kosygina 19, Moscow, 119991, Russia
来源：
Journal of Analytical Chemistry | 2006年 / 61卷 / 08期
关键词：
The sorption of Hg(II); Cd(II); and Pb(II) as anionic complexes on the solid phase of polyacrylonitrile fiber filled with the AV-17 anion exchanger from NaCl and KI solutions and their complexation with 4-(2-pyridylazo) resorcinol (PAR) and dithizone were studied. A test method was developed for the individual determination of Hg(II); and Pb(II) from one sample on three support disks. From the same solution; by the successive sorption on two disks from a 0.2 M NaCl solution; mercury was determined with dithizone and cadmium was determined with PAR. After the addition of a KI solution and sorption on the third disk; lead was determined with PAR. Using the added-found method; the procedure was approved in the analysis of natural sodium chloride water. The detection limit was 0.01 mg/L for Hg(II) and 0.02 mg/L for Cd(II) and Pb(II) for a volume of the analyzed sample of 25 mL. The time of the analysis of five or six samples (determination of three elements) is no longer than 50 min. © Pleiades Publishing; Inc; 2006;
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页码：813 / 818
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