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Standard Guide for Conducting Static Toxicity Tests with Microalgae
Automatische name übersetzung:
Standard-Leitfaden für die Durchführung Static Toxizitätstests mit Mikroalgen
NORM herausgegeben am 1.4.2004
Bezeichnung normen: ASTM E1218-04
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.4.2004
SKU: NS-40899
Zahl der Seiten: 14
Gewicht ca.: 42 g (0.09 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
algae, algal-toxicity testing, aquatic plants, aquatic toxicity testing, microalgae, ICS Number Code 07.100.20 (Microbiology of water)
1. Scope | |||||||||||||||||||||||||||||||||||||
1.1 This guide covers procedures for obtaining laboratory data concerning the adverse effects of a test material added to growth medium on growth of certain species of freshwater and saltwater microalgae during a static exposure. These procedures will probably be useful for conducting short-term toxicity tests with other species of algae, although modifications might be necessary. Although the test duration is comparable to an acute toxicity test with aquatic animals, an algal toxicity test of short duration (72, 96 or 120 h) allows for examination of effects upon multiple generations of an algal population and thus should not be viewed as an acute toxicity test. 1.2 Other modifications of these procedures might be justified by special needs or circumstances. Although using appropriate procedures is more important than following prescribed procedures, results of tests conducted using unusual procedures are not likely to be comparable to results of many other tests. Comparison of results obtained using modified and unmodified versions of these procedures might provide useful information concerning new concepts and procedures for conducting toxicity tests with microalgae. 1.3 These procedures are applicable to many chemicals, either individually or in formulations, commercial products, or known mixtures. With appropriate modifications, these procedures can be used to conduct tests on temperature, and pH and on such materials as aqueous effluents (see also Guide E 1192), leachates, oils, particulate matter, sediments, and surface waters. Static tests might not be applicable to materials that are highly volatile, are rapidly biologically or chemically transformed in aqueous solutions, or are removed from test solutions in substantial quantities by the test vessels or organisms during the test. However, practical flow-through test procedures with microalgae have not been developed. 1.4 Results of tests using microalgae should usually be reported in terms of the 96-h (or other time period) IC50 (see ) based on reduction in growth. In some situations, it might only be necessary to determine whether a specific concentration unacceptably affects the growth of the test species or whether the IC50 is above or below a specific concentration. 1.5 This guide is arranged as follows: SectionReferenced DocumentsTerminologySummary of GuideSignificance and UseHazardsApparatusFacilitiesEquipmentTest VesselsCleaningAcceptabilityGrowth MediumTest MaterialGeneralStock SolutionTest Concentration(s)Test OrganismsSpeciesSourceCultureQualityProcedureExperimental DesignTemperatureIlluminationBeginning the TestGas ExchangeDuration of TestBiological DataOther MeasurementsDetermination of Algistatic and Algicidal EffectsAnalytical MethodologyAcceptability of TestCalculationReportKeywordsThis 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 and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section . |
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2. Referenced Documents | |||||||||||||||||||||||||||||||||||||
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