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Barrett, Pamela M; Neumann, Rebecca B; Gawel, James E (2017): Aqueous arsenic, oxygen, temperature, and plankton arsenic content in urban lakes in the Puget Sound lowland from September 2015 to August 2016. PANGAEA,, Supplement to: Barrett, Pamela M; Hull, Erin A; King, C E; Burkart, Kenneth; Ott, K A; Ryan, J N; Gawel, James E; Neumann, Rebecca B (2018): Increased exposure of plankton to arsenic in contaminated weakly-stratified lakes. Science of the Total Environment, 625, 1606-1614,

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Angle Lake, Lake Killarney, North Lake, Steel Lake (western WA) were sampled monthly or bi-monthly from September 2015 to August 2016. Water column temperature and dissolved oxygen profiles were measured using a multi-parameter water quality probe (In-Situ smarTROLL MP) at approximately the deepest point in each lake. A peristaltic pump with acid-washed tubing was used to collect filtered (0.45 µm Geotech cartridge filter) water samples into acid-washed polypropylene bottles that were acidified with trace metal grade nitric acid (1% v/v). Phytoplankton (20-153 micron) and zooplankton (>153 micron) tow samples were filtered onto 5 µm polycarbonate membrane filters then subjected to a microwave-assisted (CEM MARS 5) total digestion protocol (modified EPA method 3015). Aqueous arsenic concentrations in water samples and plankton digestion solutions were determined by ICP-MS on an Agilent 7900 at the University of Washington Tacoma.
Median Latitude: 47.360861 * Median Longitude: -122.292197 * South-bound Latitude: 47.285400 * West-bound Longitude: -122.302200 * North-bound Latitude: 47.427540 * East-bound Longitude: -122.287140
Date/Time Start: 2015-09-01T00:00:00 * Date/Time End: 2016-08-30T00:00:00
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