Author/Editor     Dermelj, M; Šlejkovec, Z; Stegnar, P; Čoh, V; Čuješ, K; Novič, M
Title     Rapid radiochemical separation and determination of chlorine, bromine and iodine in water samples using ion exchange
Type     članek
Source     J Radioanal Nucl Chem, Letters
Vol. and No.     Letnik 164, št. 1
Publication year     1992
Volume     str. 59-69
Language     eng
Abstract     On the basis of tracer expiriments, a simple and rapid radiochemical separation method for simultaneous determination of I-, Br- and Cl- in one aliquot of a water sample (only 2-4 ml) has been developed. The method is based on short irradiation of the water sample and separation of the halogens using sequential ion exchange columns filled with dowex 1X8, 100-200 mesh anionic resin prepared in I-2/I2, Br-/Br2 and Cl- form. After washing the columns with an appropriate volume of 2 percent NaCl solution, the resins were transfered to vials and activities of the isolated radionuclides 128I, 82Br and 38 Cl measured together with standards in a "well type" or on a coaxial Ge detector connected to a Canberra 90 multichannel analyzer. Besides high chemical yields, from the ypsilon spectra of the isolated radionuclides, it is evident that high decontamination factors are achieved. In this way water samples containing differnt amounts of total dissolved solids (distilled, drinking, minewral, river, sea water) were analyzed. Because of the lack of suitable reference materials for water analysis, the reliability of the results obtained was checked by ttrimetric, extraction and ion chromatographic methods.
Descriptors     WATER
IODINE
BROMINE
CHLORINE
ION EXCHANGE
RADIOCHEMISTRY
WATER POLLUTION, CHEMICAL
CHROMATOGRAPHY, ION EXCHANGE
MINERAL WATERS