Disk mini-adsorbers with radial flow for determination of 234Th concentration in seawater

被引：5

作者：

Gulin, S. B. ^{[1
,2
]}

Gorelov, Yu S. ^{[1
]}

Sidorov, I. G. ^{[2
]}

Proskurnin, V. Yu ^{[2
]}

机构：

[1] Sevastopol Natl Univ Nucl Energy & Ind, UA-99015 Sevastopol, Crimea, Ukraine

[2] AO Kovalevskiy Inst Biol So Seas, UA-99011 Sevastopol, Crimea, Ukraine

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2013年 / 295卷 / 02期

关键词：

Th-234; Seawater; MnO2; Particle flux; THORIUM ISOTOPES; SMALL-VOLUME; WATER; SEA;

D O I：

10.1007/s10967-012-1913-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A modified method has been developed for measuring the Th-234 concentration in seawater, which is based upon the use of MnO2-impregnated disk mini adsorbers with radial flow connected in-line and the direct beta counting of Th-234 and/or its daughter Pa-234m. This allows determining the Th-234 concentration in a relatively small volume of seawater (20-50 L) with the possibility to check the extraction efficiency in every individual sample. The field testing, which was carried out at different areas of Sevastopol Bay during different seasons, has shown applicability of the proposed method to evaluate particle fluxes in marine environments within a wide range of concentrations of suspended matter.

引用

页码：855 / 860

页数：6

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