Sharp drop in ‘forever chemicals’ in seabird eggs hailed as win for regulation
GS3अर्थव्यवस्था · विज्ञान-तकनीक · पर्यावरण · सुरक्षा· Biotechnology & health research· Prelims·
चर्चा में क्यों
Environment and Climate Change Canada researchers reported a significant drop in 'forever chemicals' (Pfas) in northern gannet eggs, attributed to increased regulatory scrutiny on 3M and EPA-led phase-out agreements.
पृष्ठभूमि
The study observed a 74% drop in Pfos levels and significant reductions in PFHxS compounds in northern gannet eggs. These levels peaked in the late 1990s and early 2000s. The decline is linked to regulatory actions against 3M and agreements with the US Environmental Protection Agency.
प्रीलिम्स के लिए तथ्य
- पर्यावरणNorthern gannets are the avian species used to monitor Pfas levels in this study.
- तथ्यPfos levels in northern gannet eggs dropped by 74% since the peak in the late 1990s and early 2000s.
- संस्थाThe US Environmental Protection Agency (EPA) entered into agreements with chemical makers to phase out certain Pfas.
मेन्स के लिए
Q. Discuss the challenges in regulating persistent organic pollutants like Pfas and the implications of 'regrettable substitution' where newer chemical generations pose emerging environmental risks.
उत्तर के आयाम
- Regulatory lag: Difficulty in monitoring and banning newer generations of Pfas as they replace phased-out compounds
- Bioaccumulation risks: Persistence of 'forever chemicals' in marine food chains and avian reproductive health
- Corporate accountability: Balancing industrial chemical production with stringent environmental safety standards
कीवर्ड: Persistent Organic Pollutants · Bioaccumulation · Regulatory Scrutiny · Environmental Toxicology · Regrettable Substitution
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