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[The luminescent bacteria test for clean water legislation]
Schriftenreihe Des Vereins Fur Wasser-, Boden- Und Lufthygiene
|January 1, 1992
Summary
The luminescent bacteria test uses Photobacterium phosphoreum to detect toxicity by measuring light inhibition. Standardization of this bioassay is crucial for accurate wastewater monitoring and regulatory compliance.
Area of Science:
- Environmental Microbiology
- Ecotoxicology
- Biotechnology
Context:
- Luminescent bacteria, specifically Photobacterium phosphoreum, offer a sensitive bioassay for toxicity assessment.
- The luminescence inhibition test, a type of luminescent bacteria test, utilizes light output as a direct measure of metabolic disruption.
- Standardization is essential as toxicant effects are influenced by test duration and temperature.
Purpose:
- To highlight the necessity of standardizing luminescent bacteria test methods.
- To describe the standardized procedure for luminescent bacteria testing (DIN 38,412, part 34) using various bacterial preparations.
- To discuss the application of this bioassay in wastewater analysis and regulatory frameworks.
Summary:
- The luminescent bacteria test measures the inhibition of light produced by Photobacterium phosphoreum to assess toxicity.
- A standardized procedure (DIN 38,412, part 34) has been established for using fresh, freeze-dried, or liquid-dried bacteria.
- Results from wastewater analyses demonstrate the test's wide applicability and its role in regulatory compliance.
Impact:
- The standardized luminescent bacteria test is incorporated into German wastewater regulations (WHG, AbwAG, RAV) for monitoring treatment efficiency and discharges.
- This bioassay serves as a key component in a battery of ecotoxicological tests for environmental protection.
- Standardization ensures reliable and comparable data for evaluating the technological level of wastewater treatment and routine monitoring.