Author:
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Category :
Languages : en
Pages :
Book Description
The Geophysical Institute at the University of Alaska Fairbanks offers the full text of the October 22, 1999 article entitled "Mercury Found in Fish of Southwest Alaska," written by Ned Rozell. The university presents the article as part of the Alaska Science Forum. Fish in southwest Alaska have been found to contain high levels of mercury. Fish eat plankton and algae, which ingest mercury from the air or minerals in the water.
Mercury Found in Fish of Southwest Alaska
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The Geophysical Institute at the University of Alaska Fairbanks offers the full text of the October 22, 1999 article entitled "Mercury Found in Fish of Southwest Alaska," written by Ned Rozell. The university presents the article as part of the Alaska Science Forum. Fish in southwest Alaska have been found to contain high levels of mercury. Fish eat plankton and algae, which ingest mercury from the air or minerals in the water.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The Geophysical Institute at the University of Alaska Fairbanks offers the full text of the October 22, 1999 article entitled "Mercury Found in Fish of Southwest Alaska," written by Ned Rozell. The university presents the article as part of the Alaska Science Forum. Fish in southwest Alaska have been found to contain high levels of mercury. Fish eat plankton and algae, which ingest mercury from the air or minerals in the water.
Assessment of Total Mercury and Methyl Mercury in Selected Subsistence Fish in Western Alaska
Author: Xiaoming Zhang
Publisher:
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Category : Fishes
Languages : en
Pages : 236
Book Description
"Total Hg (THg) and methylmercury (MeHg) were examined in muscle and liver samples of salmon species (Chinook: Oncorhynchus tshawytscha; Chum: O. keta; Sockeye: O. nerka; Coho: O. kisutch) and freshwater fish species (Pike: Esox lucius; Grayling: Thymallus arcticus; Whitefish: Caregonus nelsoni) collected in 1999 and 2000 from the Western Alaska rivers (Yukon, Kuskokwim, Nushagak and Kvichak). The THg in salmon muscles has a mean value of 62 ng/g (ww). In Pike muscles, THg has a mean value of 879 ng/g. The mean concentrations of THg in Grayling and Whitefish muscle are 153 ng/g and 32 ng/g respectively. In salmon muscle and liver the MeHg levels constitute 77% and 62% of the THg levels, respectively. In Pike muscle the MeHg levels constitute 100% of the THg levels. A significant correlation between Hg levels and fish length was found. Calculated consumption limits indicate that children may consume 0.05-1.5 kg of fish per month, depending on the species consumed. The study suggests that, from 1979 to 1998, nearly 21 kg of MeHg was transported by Sockeye salmon to the Alaskan rivers of the Bering Sea east coast"--Leaf 3.
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 236
Book Description
"Total Hg (THg) and methylmercury (MeHg) were examined in muscle and liver samples of salmon species (Chinook: Oncorhynchus tshawytscha; Chum: O. keta; Sockeye: O. nerka; Coho: O. kisutch) and freshwater fish species (Pike: Esox lucius; Grayling: Thymallus arcticus; Whitefish: Caregonus nelsoni) collected in 1999 and 2000 from the Western Alaska rivers (Yukon, Kuskokwim, Nushagak and Kvichak). The THg in salmon muscles has a mean value of 62 ng/g (ww). In Pike muscles, THg has a mean value of 879 ng/g. The mean concentrations of THg in Grayling and Whitefish muscle are 153 ng/g and 32 ng/g respectively. In salmon muscle and liver the MeHg levels constitute 77% and 62% of the THg levels, respectively. In Pike muscle the MeHg levels constitute 100% of the THg levels. A significant correlation between Hg levels and fish length was found. Calculated consumption limits indicate that children may consume 0.05-1.5 kg of fish per month, depending on the species consumed. The study suggests that, from 1979 to 1998, nearly 21 kg of MeHg was transported by Sockeye salmon to the Alaskan rivers of the Bering Sea east coast"--Leaf 3.
U.S. Geological Survey Circular
Author:
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Category : Geology
Languages : en
Pages : 580
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 580
Book Description
U.S. Geological Survey Bulletin
Author:
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Category : Geology
Languages : en
Pages : 176
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 176
Book Description
Environmental Studies of Mineral Deposits in Alaska
Author: John E. Gray
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Category : Metals
Languages : en
Pages : 48
Book Description
Short articles summarize environmental geochemical studies of metallic mineral deposits in Alaska, including massive sulfide, gold, mercury, chromium, and uranium mines and deposits. The studies report metal and acid concentrations in samples collected around such mines and deposits, and evaluate environmental effects of the deposits. The articles are written in a style intended to reach a general audience.
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 48
Book Description
Short articles summarize environmental geochemical studies of metallic mineral deposits in Alaska, including massive sulfide, gold, mercury, chromium, and uranium mines and deposits. The studies report metal and acid concentrations in samples collected around such mines and deposits, and evaluate environmental effects of the deposits. The articles are written in a style intended to reach a general audience.
Effects of Mercury Pollution on Halibut and the Alaska Fishery
Author: United States. Congress. Senate. Committee on Commerce. Subcommittee on Oceans and Atmosphere
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Category : Fishes
Languages : en
Pages : 74
Book Description
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 74
Book Description
Geologic Studies in Alaska by the U.S. Geological Survey During ...
Author:
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ISBN:
Category : Geology
Languages : en
Pages : 340
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 340
Book Description
U.S. Geological Survey Professional Paper
Author:
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ISBN:
Category :
Languages : en
Pages : 296
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 296
Book Description
Geologic Studies in Alaska by the U.S. Geological Survey, 1995
Author:
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Category : Geology
Languages : en
Pages : 340
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 340
Book Description
U.S. Geological Survey Bulletin
Author: Norman John Silberling
Publisher:
ISBN:
Category : Animals, Fossil
Languages : en
Pages : 294
Book Description
Publisher:
ISBN:
Category : Animals, Fossil
Languages : en
Pages : 294
Book Description