Biogeochemistry of Pb in the Northeastern subarctic Pacific Ocean and the Beaufort Sea of the Arctic Ocean ...
Using a method which simultaneously concentrates and isolates Pb from seawater, a total of 208 samples collected using trace-metal clean techniques were determined for dissolved Pb concentration in the subarctic Northeast Pacific and the Canada Basin of the southwestern Arctic Ocean. The analytical...
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| Format: | Text |
| Language: | English |
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University of British Columbia
2012
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| Online Access: | https://dx.doi.org/10.14288/1.0053486 https://doi.library.ubc.ca/10.14288/1.0053486 |
| Summary: | Using a method which simultaneously concentrates and isolates Pb from seawater, a total of 208 samples collected using trace-metal clean techniques were determined for dissolved Pb concentration in the subarctic Northeast Pacific and the Canada Basin of the southwestern Arctic Ocean. The analytical method found good agreement between determined values and consensus values of several seawater standards. Concentration in seawater was generally dictated by proximity to pollution sources which appeared to provide Pb via aeolian deposition and by proximity to primary productivity or freshly precipitated mineral phases which scavenged Pb to lower levels than expected based on previous research. Over the entire dataset, concentration ranged from 1.8 pmol/kg to 81.3 pmol/kg, with the highest values occurring just below the permanent mixed layer in the northeast Pacific and was of unknown origin. The lowest level was found in the Pacific water mass of the southern Beaufort Sea, which may be the result of interactions ... |
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