Determination of Tritium in Hydrosphere Samples by Ultra Low Level Liquid Scintillation Quantulus 12...
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Determination of Tritium in Hydrosphere Samples by Ultra Low Level Liquid Scintillation Quantulus 1220 Barbora Sedlářová. Water Research Institute T. G. Masaryka, Podbabská 30, 160 62 Prague 6, e- mail: [email protected] Intoduction. Quantulus 1220

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Determination of Tritium in Hydrosphere Samples by Ultra Low Level Liquid Scintillation Quantulus 1220Barbora Sedlářová

Water Research Institute

T. G. Masaryka, Podbabská 30, 160 62 Prague 6,

e-mail: [email protected]


Intoduction
Intoduction Level Liquid Scintillation Quantulus 1220

  • Quantulus 1220

  • Project requisted by the Ministry of Environment: The Contamination of Hydrosphere by radionuclides

  • Determination of tritium in surface water: Labe Hřensko, Odra Bohumín,Dyje Pohansko

  • Determination of tritium in rain-fall: Závišín


Quantulus 1220
Quantulus 1220 Level Liquid Scintillation Quantulus 1220


Protocol editor and data acquisition software winq
Protocol Editor and Data Acquisition Software – WinQ Level Liquid Scintillation Quantulus 1220


Spectrum analysis software
Spectrum Analysis Software Level Liquid Scintillation Quantulus 1220


Method of 3 h determination
Method of Level Liquid Scintillation Quantulus 12203H determination

  • SOP-RA-7: ČSN ISO 9698

  • 20 ml PE vial: 8 ml water sample + 12 ml Optiphase HiSafe – 3

  • Counting efficiency: ~ 22%

  • Calibration: standard of tritium, CMI IIZ

  • Counting time: t = 800 min

  • Background: ~ 0,6 CPM

  • Detection limit: level of significancy

    a = b = 0,05 (P = 95%), cND 1,2 Bq/l, cNV 0,6 Bq/l

  • Control of quality: verification of instrument byCMI IIZ, interlaboratorycomparison test, laboratory quality system is assessed by ASLAB


Comparison of detection level
Comparison of detection level Level Liquid Scintillation Quantulus 1220


Areas of tritium detection
Areas of tritium detection Level Liquid Scintillation Quantulus 1220

Labe Hřensko

Odra Bohumín

Závišín

Dyje Pohansko


Continuance of tritium concentration years averages in su Level Liquid Scintillation Quantulus 1220rface water:

Labe Hřensko


Continuance of tritium concentration years averages in su Level Liquid Scintillation Quantulus 1220rface water:

Odra Bohumín


Continuance of tritium concentration years averages in Level Liquid Scintillation Quantulus 1220rain-fall: Závišín



Continuance of tritium concentration years averages in su during year : Zrface water:

Dyje Pohansko


Deposition during year : Zof tritium in river-basin Labe and outfall of tritium in Labe – Hřensko

during 1993 – 2002 include highlight increase of ETE

(nuclear power station Temelín) inpact in 2002

Rain-fall

ETE

Labe


Thank you for your attention during year : Z

Water Research Institut T. G. Masaryka, Podbabská 30, 160 62 Prague 6,

e-mail: [email protected]


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