A Comparison of Modern and Preindustrial Levels of Mercury in the Teeth of Beluga in the Mackenzie Delta, Northwest Territories, and Walrus at Igloolik, Nunavut, Canada

  title={A Comparison of Modern and Preindustrial Levels of Mercury in the Teeth of Beluga in the Mackenzie Delta, Northwest Territories, and Walrus at Igloolik, Nunavut, Canada},
  author={P. M. Outridge and Keith A. Hobson and Roger McNeely and Arthur S. Dyke},
Mercury (Hg) concentrations were compared in modern and preindustrial teeth of belugas ( Delphinapterus leucas ) and walrus ( Odobenus rosmarus rosmarus ) at sites in the Canadian Arctic so that the relative amounts of natural and anthropogenic Hg in modern animals could be estimated. Mercury levels in the teeth of Beaufort Sea belugas captured in the Mackenzie Delta, Northwest Territories, in 1993 were significantly (p = 0.0001) higher than those in archeological samples dated A.D. 1450-1650… 

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