Metody analizy 90 Sr w próbkach środowiskowych

• Autorzy: Solecki J.

Warianty tytułu

EN

Methods of 90Sr analysis in evironmental samples

• Języki publikacji: PL

Abstrakty

EN

Application of nuclear reactions for military purposes and technical imperfection of nuclear power plants raised interest in formation of radioactive elements in these processes on one hand and their occurrence in environment on the other. 90Sr, (B-emitter), belongs to isotopes of high radiotoxicity due to its good assimilation by organisms and long half-life time as well as biological half-life. Because of radiochemical properties of 90Sr, analysis of its concentration is very difficult. The whole process comprises laborious stages: isolation of the isotope from the sample, removing contamination, elimination of the decay product (90Y) and radioactivity measurement. Many analytical methods have been presented in literature for years. Generally, one can divide them in two groups: fast and standard. Fast methods, (from several hours to a few days) are mostly applied to .fresh. samples (immediately after radioactive fall-out) containing 89Sr and 91Y beside 90Sr and 90Y. Despite smaller accuracy they can provide information on possible danger. More credible data may be obtained from .old. samples (2-3 years from contamination) by standard methods. The mostly encountered analytical problems are: sample dissolution, removal of calcium and iron ions, removing primary/parental isotopes of radium, thorium, actinium and lead. Methods for 90Sr-90Y separation (liquid-liquid and solid-liquid extraction) are well known and broadly presented in literature [6-10, 30-34]. Those methods used to determine concentration of radioactive 90Sr in environmental samples. A skilled radioanalyst may modify them according to the needed procedure, which is described in present paper.

Słowa kluczowe

PL

skażenie radioaktywne; stront; ITR; analiza; metoda analizy; gleba; radionuklidy

EN

contamination; strontium; yttrium; analysis; methods; soil; radionuclides

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Wiadomości Chemiczne
• Rocznik: 2006
• Tom: [Z] 60, 1-2
• Strony: 75--90
• Opis fizyczny: tab., wykr., bibliogr. 53 poz.

Twórcy

autor

Solecki J.

• Zakład Radiochemii i Chemii Koloidow, Wydział Chemii Uniwersytetu Marii Curie-Skłodowskiej, Pl. M.Curie-Skłodowskiej 2, 20-031 Lublin,

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