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5. Conclusions
The results described in this article show that industrial effluents from the surface treatment sector, while complying with current regulations, are characterized by metal polycontamination, which is highly variable over time. The toxicity of these discharges towards the bio-indicators Daphnia magna and Lactuca sativa depends on the chemistry of each discharge. The results also show that a reduction in the pollutant load of the discharges results in a concomitant reduction in the toxicity of the discharges, thus demonstrating the existence of a relationship between "chemical efficiency" and "reduction of environmental impacts". It therefore makes sense to combine the two different but complementary approaches of chemical analysis and ecotoxicology.
The authors would like to thank the Agence de l'Eau (NIRHOFEX and...
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Bibliography
Standards and norms
- Exigences générales concernant la compétence des laboratoires d'étalonnage et d'essais. - ISO/IEC-17025 - 2017
- Water quality – Determination of mobility inhibition of Daphnia magna – acute toxicity test. - ISO 6341 - 2012
- Water quality – Determination of the long-term toxicity of substances to Daphnia magna Straus. - ISO 10706 - 2000
- Water quality – Protocol for initial evaluation of method performance...
Regulations
Directive 2000/60/EC establishing a framework for Community action in the field of water policy, OJ of the European Communities, L 327, 22.12.2000, p. 1.
Directive 2006/118/EC on the protection of groundwater against pollution and deterioration, OJ of the European Communities, L 372, 12.12.2006, p. 19.
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