Norm

ASTM E1218-04(2012)

Standard Guide for Conducting Static Toxicity Tests with Microalgae

61,51

Over deze norm

Status Definitief
Aantal pagina's 14
Commissie E50.47
Gepubliceerd op 01-12-2012
Taal Engels

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 E1192), 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 3.2.5) 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:

Section

Referenced Documents

2

Terminology

3

Summary of Guide

4

Significance and Use

5

Hazards

7

Apparatus

6

 Facilities

6.1

 Equipment

6.2

 Test Vessels

6.3

 Cleaning

6.4

 Acceptability

6.5

Growth Medium

8

Test Material

9

 General

9.1

 Stock Solution

9.2

 Test Concentration(s)

9.3

Test Organisms

10

 Species

10.1

 Source

10.2

 Culture

10.3

 Quality

10.4

Procedure

11

 Experimental Design

11.1

 Temperature

11.2

 Illumination

11.3

 Beginning the Test

11.4

 Gas Exchange

11.5

 Duration of Test

11.6

 Biological Data

11.7

 Other Measurements

11.8

 Determination of Algistatic and Algicidal Effects

11.8.5

Analytical Methodology

12

Acceptability of Test

13

Calculation

14

Report

15

Keywords

16


1.6 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 and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 7.

Details

ICS-code 07.100.20
Nederlandse titel Standard Guide for Conducting Static Toxicity Tests with Microalgae
Engelse titel Standard Guide for Conducting Static Toxicity Tests with Microalgae

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