SCIENTIFIC ABSTRACT AREFYEVA, T.V. - ARENBERG, A.A.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000102010001-6
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: January 3, 2017
• Document Release Date: July 27, 2000
• Sequence Number: 1
• Publication Date: December 31, 1967
• Content Type: SCIENCEAB

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A _~REFy_F V L "1 1*11 11
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The Application o1 Ike rolWOMVWQ 111114111,111011 of Atudysis to prodnegio,
-00
L I)ulmvit*ka%,& (Zwn.j. Lsh., 104". DL (1), :14
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132. Some Mmyled of the uw of th, anform.4
e2
4"S-Z~
OW
4
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ornation. of'OR ind e i4 I h-1
to of drep fomnatiou of ED. Ilia cuvTriit ij
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timW to ffic. coucri ,I Pb (3n a ha'*1-4-
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ition of
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AP
T. V. Aret'eva and R G, Pats.
Ibcrutk.V.tueA T,ul-v- MR TU-11 7-1:
) 9S 5 lei. 353 3 5 ', R, I. Z k:- j`~ 1 6
k br~ E, N
. -j 7143-1he idicy is treated 4ith arqua
regia, &cd Sb and ba wre ----mo,ed 1,y repeated
evapor at;cin with Sr and HB-. The simi i--, tbfn
e,ap~-r.ted to dryn~s. Fur -Amples nut :,intaining
'1-6-1'. td :LI H~' I an V
ai;ZI-red r auxmre or :1 nil dil- HCI
7 of H,O and 5 Trif of ar:eti, acid. heAt,d to 196
and 0.5 ml of a 3 1,,er cent solzi of I ilitroso-2-
wiplitl I ~i iddcd Aft 'r I h. at go' C i he ppt 5
tilleled rid. fused witri acid, diswived in
aqua regia and neutralLsed witff aq.- NH, The
Co is then determined polarographiWly. The
KNO, as removed from the Mtrate by evapo".bon
Forthe
determination of Pb. the residur &fLc- ren%aval uf Sb
and -In is diss,)Ived in HCI (1: U, chluted. 0-~ W 0-3 9
of redurvi] Fe L4 aded. and the scZn is nitmed and
jk4arographed. I(educticiti, jxjtenti,LL% v-. the S,(:.Ih,
;_ VJ" rt -f~ -,;.- , - .

- ~ -
) - t:7~,.y ....... I,-,-I-- -I-- .. -I II
I - .-

fp
-i Ult- 'ar --i- ~A- - I
go'e~ wv~'-afttd **~ at -0-3 v jw
-rf foal v4o~ilitre, and, with a pbol-
Im. H
to Vf, a w
Cat;LlIqk- wav's at -1-45,V for cancn- (if Re nt G-2 2
t-j 1) 5 , W per Urre. tIv- helfzht V"inz m
ti- .-I ~z. trw corica. ta cne soin- ts > i
in
-d

SOV/1 37-57-11--22730
Translation from: Refer ativnyyzhurnal, Me tali Urgiya, 1957, Nr 11, p 299 (USSR)
AUTHOR: Aref' yeva, T. V.
TITLE: Polarographic ge-thod for the Determination of Trace Metals in
the Dusts of Lead-zinc and Copper-smelting Plants (Polyaro-
graficheskiy metod opredeleniya rasseyannykh metallov v
pylyakh svinLsovo-tsinkovykh i medeplavillnykh zavodov)
PERIODICAL: Izv. AN KazSSR, Ser. khim. , 1957, Nr 1, pp 85-93
ABSTRACT: A study of the polarographic determination of In, T1, Ge, Re,
and Ga in Pb-Zn dusts. In is determined I hically
~o arograp
against a background of 3N HC 1, at an 2= -0. 60 v. In is
separated from Cd by precipitating it with NH 4 OH together with
Fe(OH)3. Using a 5 - 10 g test sample, In is cemented with Zn
dust in an HC I medium at a pH of 1. 0. As, Se, and TI are
separated from the solution with HCI in the presence of
hydrazine hydrochloride. Ti is extracted with ether from
solutions of HBr salts. T1 is reduced to Tl_~ with Na 2so 3
and determined against an NH 4OH = (NH ) ZSO4background.
If there is > 8 - 10~o Cu in the tes~ samp
Card 112 le, then TI is

SOV/I 37-57-11-22730
Polarographic Method for the Determination of Trace Metals (cont, )
determined against a 3N HCI background. Reduced iron serves as the
reducling agent for TI and Cu. E - --0. 47 v, Ge4-L cannot be reduced on
I/ZT I '
a mercury- drop electrode Gez-F is determined polarographically against a
back round of 6N FIC I E ~ z - 0, 45 v. At a concentratirin of > 1 -2 mg/liter
4+9 1/ZGe
C; e is reduced by the hypophosphite of Ca or Na in an FICI medium. When
the concentration of Ge is low it is precipitated together with Fe ir. the form
of a hydroxide after which GeCI 4 is distilled from the HC I solution. Ge can
be determined polarographicai!v only with an extension anode. Re is deter-
mined pol arographic ally in a phc-sphate buffer solution wit.h a pH of 7 - 8,
E VZRe:: -1. 45 v. Mo and Cu co not interfere with the determination when
they are present in the following ratios: Cu:Re = 4:1 and Mo:Re = 10:1.
Ga can be reduced against a background of 0. OIN KCI when the H ion con-
tent. is