STN EN 17899
| Označenie: | STN EN 17899 |
| Platnosť: | Platná |
| Počet strán: | 24 |
| 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. Spektrofotometrické stanovenie obsahu chlorofylu-a použitím extrakcie etanolom na rutinné monitorovanie kvality vody |
| Anglický názov: | Water quality - Spectrophotometric determination of chlorophyll-a content by ethanol extraction for the routine monitoring of water quality |
| Dátum vydania: | 01. 11. 2024 |
| Dátum zrušenia: | |
| ICS: | 13.060.70, 71.040.50 |
| Triediaci znak: | 75 7382 |
| Úroveň zapracovania: | idt EN 17899:2024 |
| Vestník: | 10/24 |
| Zmeny: | |
| Nahradzujúce normy: | |
| Nahradené normy: | |
| Poznámka vo Vestníku: | |
| Predmet normy: | This document describes a spectrophotometric method for determining the chlorophyll-a content corrected for phaeopigments as a measure of the amount of phytoplankton for all types of surface water including marine water. The determination limit is usually 2 µg/l to 5 µg/l and is calculated by each laboratory individually. It can be as low as 0,5 µg/l using 2 l of sample (or even more) and a 50 mm cuvette. NOTE In some measurement programs like marine studies on time series data and ecological status/classification no correction for phaeopigments is used and acidification is omitted, e.g. as recommended by OSPAR. |
| Náhľad normy: | Náhľad normy (PDF) |