1070-4272/05/7808-1273 + 2005 Pleiades Publishing, Inc.
Russian Journal of Applied Chemistry, Vol. 78, No. 8, 2005, pp. 1273!1275. Translated from Zhurnal Prikladnoi Khimii, Vol. 78, No. 8, 2005,
Original Russian Text Copyright + 2005 by Shaglaeva, Amosova, Shaulina, Golentovskaya, Sultangareev, Pinigina.
AND ION-EXCHANGE PROCESSES
Divinyl Sulfide!4-Vinylpyridine Copolymer
as an Effective Sorbent for Mercury
N. S. Shaglaeva, S. V. Amosova, L. P. Shaulina, I. P. Golentovskaya,
R. G. Sultangareev, and O. P. Pinigina
Favorskii Institute of Chemistry, Siberian Division, Russian Academy of Sciences, Irkutsk, Russia
Irkutsk State University, Irkutsk, Russia
Received May 19, 2005
Abstract-The sorption power of divinyl sulfide34-vinylpyridine copolymer toward Hg(II) ions was studied.
The influence of the kind and concentration of an acid on the sorption characteristics is examined. Mech-
anisms of the interaction of the active sorption centers of the copolymer with Hg(II) ions are discussed.
Polymeric complexing sorbents are successfully
used for determining low concentrations of toxic
heavy metals in multicomponent samples. With such
sorbents, the effect of the sample matrix is substan-
tially weaker, and the detection limit of the target
components is lower . The use of divinyl sulfide as
a cross-linking agent allows preparation of porous
polymers resistant to acids, and the sulfur atom exhib-
iting donor properties affects the sorption characteris-
tics [2, 3].
In this study, we examined the properties of a new
sorbent, a divinyl sulfide34-vinylpyridine copolymer,
toward Hg(II) ions.
Divinyl sulfide (DVS) was prepared according to
 and was distilled just before use. Commercial
4-vinylpyridine (VP) was purified by repeated vacuum
distillation. The purity of the monomers was moni-
Radical copolymerization was performed in am-
pules in the presence of AIBN at 60oC. Insoluble
DVS3VP copolymers were washed with solvents
(benzene, acetone, water) and dried to constant weight
in a vacuum. The compositions of the copolymers
were found by elemental analysis. The degree of
swelling of DVS3VP copolymers was determined
gravimetrically. The IR spectra were measured for
KBr pellets or mulls in mineral oil on an IFS-25 spec-
The sorption of Hg(II) ions from aqueous solu-
tions was studied in a static mode at room tempera-
ture. Mercury(II) was taken as a nitric acid solution
with the initial Hg(II) concentration of 2.79 mg ml
The solid phase was separated by filtration, and the re-
sidual Hg(II) concentration in solution was determined
by an extraction-photometric procedure .
The DVS3VP copolymers were obtained as yellow
powders stable in prolonged storage and insoluble in
organic solvents and solutions of acids and alkalis.
The copolymerization results are listed in Table 1.
Table 1. Copolymerization of DVS with VP (AIBN concentration 0.5 wt %, 60oC, 6 h)
³ Initial mixture composition, mol % ³ Content, wt % ³Copolymer composition, mol %³
³ VP ³ DVS ³ N ³ S ³ VP ³ DVS ³
1 ³ 20.00 ³ 80.00 ³ 5.01 ³ 23.42 ³ 32.11 ³ 67.89 ³ 65
2 ³ 40.10 ³ 59.90 ³ 7.90 ³ 16.83 ³ 54.36 ³ 45.64 ³ 75
3 ³ 50.00 ³ 50.00 ³ 8.78 ³ 12.67 ³ 61.23 ³ 38.77 ³ 92
4 ³ 80.00 ³ 20.00 ³12.11 ³ 3.45 ³ 88.75 ³ 11.25 ³ 80