prBAS EN 17899:2025
Water quality - Spectrophotometric determination of chlorophyll-a content by ethanol extraction for the routine monitoring of water quality
General information
Status:Project
Number of pages:21
Adoption method:Proglašavanje
Language:engleski
Edition:1.
Realization date:15.11.2024
Forseen date for next stage code:19.03.2025
Technical committee:BAS/TC 7, Environment
ICS:
13.060.70, Examination of biological properties of water
71.040.50, Physicochemical methods of analysis
71.040.50, Physicochemical methods of analysis
Abstract
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.
Lifecycle
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Original document and degree of correspondence
EN 17899:2024, identical
Work material
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