• Because of this difference, delivery of beta-HCH to the Canada Basin has lagged alpha-HCH by perhaps a decade or longer and the highest concentrations during the late 1980s and mid-1990s were observed in marginal seas rather than in the high Arctic.
• Ã€ cause de cette diffÃ©rence, le transfert du bÃªta-HCH dans le bassin Canada Ã©tait dÃ©calÃ© d'une dÃ©cennie ou plus par rapport Ã celui de l'alpha-HCH et, vers la fin des annÃ©es 1980 et le milieu des annÃ©es 1990, on a observÃ© les plus fortes concentrations dans les mers bordiÃ¨res, plutÃ´t qu'en ExtrÃªme-Arctique.