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ASTM D3731-20
Standard Practices for Measurement of Chlorophyll Content of Algae in Surface Waters
Name übersetzen
NORM herausgegeben am 1.6.2020
Informationen über die Norm:
Bezeichnung normen: ASTM D3731-20
Ausgabedatum normen: 1.6.2020
SKU: NS-995299
Zahl der Seiten: 5
Gewicht ca.: 15 g (0.03 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Kategorie - ähnliche Normen:
Die Annotation des Normtextes ASTM D3731-20 :
Keywords:
algae surface water, chlorophyll, pheophytin ,, ICS Number Code 13.060.10 (Water of natural resources)
Ergänzende Informationen
| Significance and Use |
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5.1 Data on the chlorophyll content of the algae have the following applications: 5.1.1 To provide estimates of algal biomass and productivity. 5.1.2 To provide general information on the taxonomic composition (major groups) of the algae, based on the relative amounts of chlorophyll a, b, and 5.1.3 To determine long-term trends in water quality. 5.1.4 To determine the trophic status of surface waters. 5.1.5 To detect adverse effects of pollutants on plankton and periphyton in receiving waters. 5.1.6 To determine maximum growth rates and yields in algal growth potential tests. |
| 1. Scope |
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1.1 These practices include the extraction and the measurement of chlorophyll a, b, and 1.1.1 Spectrophotometric, trichromatic practice for measuring chlorophyll a, b, and 1.1.2 Spectrophotometric, monochromatic practice for measuring chlorophyll a corrected for pheophytin a; and for measuring pheophytin 1.1.3 Fluorometric practice for measuring chlorophyll 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
