Haloacetic Acids in Canadian Lake Waters and Precipitation
Haloacetic acids (HAAs) were measured in lake water and precipitation in distinct geographical areas of Canada with the objective of determining prevailing levels and source regions of these phytotoxins. This included surface water samples from the Great Lakes and four lakes in widely separated geog...
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| Veröffentlicht in: | Environmental science & technology 2000-10, Vol.34 (20), p.4266-4272 |
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| container_title | Environmental science & technology |
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| creator | Scott, Brian F MacTavish, David Spencer, Christine Strachan, William M. J Muir, Derek C. G |
| description | Haloacetic acids (HAAs) were measured in lake water and precipitation in distinct geographical areas of Canada with the objective of determining prevailing levels and source regions of these phytotoxins. This included surface water samples from the Great Lakes and four lakes in widely separated geographical areas of Canada. These lakes had levels dependent on the degree of isolation from human activity, with the more isolated lakes having HAA concentration generally of |
| doi_str_mv | 10.1021/es9908523 |
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J ; Muir, Derek C. G</creator><creatorcontrib>Scott, Brian F ; MacTavish, David ; Spencer, Christine ; Strachan, William M. J ; Muir, Derek C. G</creatorcontrib><description>Haloacetic acids (HAAs) were measured in lake water and precipitation in distinct geographical areas of Canada with the objective of determining prevailing levels and source regions of these phytotoxins. This included surface water samples from the Great Lakes and four lakes in widely separated geographical areas of Canada. These lakes had levels dependent on the degree of isolation from human activity, with the more isolated lakes having HAA concentration generally of <100 ng/L. Surface water from Lake Superior was sampled at 11 sites during two separate cruises. This lake had HAA levels of <100 ng/L except for dichloroacetic acid which generally was the most abundant of all the HAAs. Two sites from each of the other Great Lakes were sampled, one close to the inflow of the lake and the other close to the outflow. These HAA concentrations were generally 10 times greater than in Lake Superior. For precipitation, the HAA levels were variable (<10−to 2400 ng/L) in daily event samples from seven sites situated across Canada. Five-day back-trajectories indicated that the sources of the air masses govern the types and amounts of HAAs in the precipitation. Urban centers appear to be sources of HAAs, particularly trifluoroacetic acid (TFA). The average daily event precipitation fluxes of TFA were reasonably constant across Canada, except for samples from the station in the Northwest Territories, but those of the chloroacetic acids increased from west to east.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/es9908523</identifier><identifier>CODEN: ESTHAG</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Acid rain ; Acids ; Applied sciences ; Atmospheric pollution ; Continental surface waters ; Dispersed sources and other ; Earth sciences ; Earth, ocean, space ; Engineering and environment geology. Geothermics ; Exact sciences and technology ; haloacetic acids ; Lakes ; Natural water pollution ; North America, Great Lakes ; Pollution ; Pollution sources. Measurement results ; Pollution, environment geology ; Water pollution ; Water treatment and pollution</subject><ispartof>Environmental science & technology, 2000-10, Vol.34 (20), p.4266-4272</ispartof><rights>Copyright © 2000 American Chemical Society</rights><rights>2001 INIST-CNRS</rights><rights>Copyright American Chemical Society Oct 15, 2000</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a412t-f268dd00f607e513ae653d0f15cd78ff2a712f0aea0c94255cc0185e1c8572173</citedby><cites>FETCH-LOGICAL-a412t-f268dd00f607e513ae653d0f15cd78ff2a712f0aea0c94255cc0185e1c8572173</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/es9908523$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/es9908523$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,780,784,2765,27076,27924,27925,56738,56788</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=831044$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Scott, Brian F</creatorcontrib><creatorcontrib>MacTavish, David</creatorcontrib><creatorcontrib>Spencer, Christine</creatorcontrib><creatorcontrib>Strachan, William M. J</creatorcontrib><creatorcontrib>Muir, Derek C. G</creatorcontrib><title>Haloacetic Acids in Canadian Lake Waters and Precipitation</title><title>Environmental science & technology</title><addtitle>Environ. Sci. Technol</addtitle><description>Haloacetic acids (HAAs) were measured in lake water and precipitation in distinct geographical areas of Canada with the objective of determining prevailing levels and source regions of these phytotoxins. This included surface water samples from the Great Lakes and four lakes in widely separated geographical areas of Canada. These lakes had levels dependent on the degree of isolation from human activity, with the more isolated lakes having HAA concentration generally of <100 ng/L. Surface water from Lake Superior was sampled at 11 sites during two separate cruises. This lake had HAA levels of <100 ng/L except for dichloroacetic acid which generally was the most abundant of all the HAAs. Two sites from each of the other Great Lakes were sampled, one close to the inflow of the lake and the other close to the outflow. These HAA concentrations were generally 10 times greater than in Lake Superior. For precipitation, the HAA levels were variable (<10−to 2400 ng/L) in daily event samples from seven sites situated across Canada. Five-day back-trajectories indicated that the sources of the air masses govern the types and amounts of HAAs in the precipitation. Urban centers appear to be sources of HAAs, particularly trifluoroacetic acid (TFA). The average daily event precipitation fluxes of TFA were reasonably constant across Canada, except for samples from the station in the Northwest Territories, but those of the chloroacetic acids increased from west to east.</description><subject>Acid rain</subject><subject>Acids</subject><subject>Applied sciences</subject><subject>Atmospheric pollution</subject><subject>Continental surface waters</subject><subject>Dispersed sources and other</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Engineering and environment geology. Geothermics</subject><subject>Exact sciences and technology</subject><subject>haloacetic acids</subject><subject>Lakes</subject><subject>Natural water pollution</subject><subject>North America, Great Lakes</subject><subject>Pollution</subject><subject>Pollution sources. Measurement results</subject><subject>Pollution, environment geology</subject><subject>Water pollution</subject><subject>Water treatment and pollution</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNqFkEtLLDEQRoMoOD4W_oPGyxVctFYlk07m7mTwPT7Q8YGbUKQTiLbdY9ID-u9tHZkLunBVizp1qupjbANhB4HjrkuDAWjJxQLroeSQSy1xkfUAUOQDUdwvs5WUHgGAC9A99u-Iqoasa4PN9mwoUxbqbEg1lYHqbERPLruj1sWUUV1ml9HZMAkttaGp19iSpyq59a-6ym4O9sfDo3x0cXg83Bvl1Efe5p4XuiwBfAHKSRTkCilK8ChtqbT3nBRyD-QI7KDPpbQWUEuHVkvFUYlVtjXzTmLzMnWpNc8hWVdVVLtmmgxq0KKQ_d9BpTSCwA7c_AY-NtNYd0-YLhUUIPsftu0ZZGOTUnTeTGJ4pvhmEMxH1maedcf--RJSslT5SLUNaT6gBcKnMZ9RIbXudd6l-GQKJZQ048trc3Y7fpCn51fmpOP_zniy6f-FP7e_A1TDlc0</recordid><startdate>20001015</startdate><enddate>20001015</enddate><creator>Scott, Brian F</creator><creator>MacTavish, David</creator><creator>Spencer, Christine</creator><creator>Strachan, William M. 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Measurement results</topic><topic>Pollution, environment geology</topic><topic>Water pollution</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Scott, Brian F</creatorcontrib><creatorcontrib>MacTavish, David</creatorcontrib><creatorcontrib>Spencer, Christine</creatorcontrib><creatorcontrib>Strachan, William M. J</creatorcontrib><creatorcontrib>Muir, Derek C. 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J</au><au>Muir, Derek C. G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Haloacetic Acids in Canadian Lake Waters and Precipitation</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2000-10-15</date><risdate>2000</risdate><volume>34</volume><issue>20</issue><spage>4266</spage><epage>4272</epage><pages>4266-4272</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>Haloacetic acids (HAAs) were measured in lake water and precipitation in distinct geographical areas of Canada with the objective of determining prevailing levels and source regions of these phytotoxins. This included surface water samples from the Great Lakes and four lakes in widely separated geographical areas of Canada. These lakes had levels dependent on the degree of isolation from human activity, with the more isolated lakes having HAA concentration generally of <100 ng/L. Surface water from Lake Superior was sampled at 11 sites during two separate cruises. This lake had HAA levels of <100 ng/L except for dichloroacetic acid which generally was the most abundant of all the HAAs. Two sites from each of the other Great Lakes were sampled, one close to the inflow of the lake and the other close to the outflow. These HAA concentrations were generally 10 times greater than in Lake Superior. For precipitation, the HAA levels were variable (<10−to 2400 ng/L) in daily event samples from seven sites situated across Canada. Five-day back-trajectories indicated that the sources of the air masses govern the types and amounts of HAAs in the precipitation. Urban centers appear to be sources of HAAs, particularly trifluoroacetic acid (TFA). The average daily event precipitation fluxes of TFA were reasonably constant across Canada, except for samples from the station in the Northwest Territories, but those of the chloroacetic acids increased from west to east.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><doi>10.1021/es9908523</doi><tpages>7</tpages></addata></record> |
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| source | American Chemical Society Journals |
| subjects | Acid rain Acids Applied sciences Atmospheric pollution Continental surface waters Dispersed sources and other Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Exact sciences and technology haloacetic acids Lakes Natural water pollution North America, Great Lakes Pollution Pollution sources. Measurement results Pollution, environment geology Water pollution Water treatment and pollution |
| title | Haloacetic Acids in Canadian Lake Waters and Precipitation |
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