STN EN ISO 11704
| Označenie: | STN EN ISO 11704 |
| Platnosť: | Platná |
| Počet strán: | 30 |
| Jazyk: |
EN
|
| Listinná verzia: | 14,10€ |
| Elektronická verzia: |
a) Bez možnosti tlače, prenosu textu a obrázkov:
12,69€ b) Bez možnosti tlače, s prenosom textu a obrázkov: 14,10€ c) S možnosťou tlače, prenosu textu a obrázkov: 18,33€ |
| Slovenský názov: | Kvalita vody. Celková objemová aktivita alfa a celková objemová aktivita beta. Metóda kvapalinového scintilačného merania (ISO 11704: 2018) |
| Anglický názov: | Water quality - Gross alpha and gross beta activity - Test method using liquid scintillation counting (ISO 11704:2018) |
| Dátum vydania: | 01. 05. 2019 |
| Dátum zrušenia: | |
| ICS: | 13.060.60, 17.240 |
| Triediaci znak: | 75 7621 |
| Úroveň zapracovania: | idt EN ISO 11704:2018, idt ISO 11704:2018 |
| Vestník: | 04/19 |
| Zmeny: | |
| Nahradzujúce normy: | |
| Nahradené normy: | STN EN ISO 11704:2016-03 (75 7621) |
| Poznámka vo Vestníku: | |
| Predmet normy: | This document specifies a method for the determination of gross alpha and gross beta activity concentration for alpha- and beta-emitting radionuclides using liquid scintillation counting (LSC). The method is applicable to all types of waters with a dry residue of less than 5 g/l and when no correction for colour quenching is necessary. Gross alpha and gross beta activity measurement is not intended to give an absolute determination of the activity concentration of all alpha- and beta-emitting radionuclides in a test sample, but is a screening analysis to ensure particular reference levels of specific alpha and beta emitters have not been exceeded. This type of determination is also known as gross alpha and beta index. Gross alpha and beta analysis is not expected to be as accurate nor as precise as specific radionuclide analysis after radiochemical separations. |