Persistent Organic Pollutants in the East Antarctic Atmosphere: Inter-Annual Observations from 2010 to 2015 Using High-Flow-Through Passive Sampling
| Autor: | Frank Wania, Sean J. Wild, Anders Bignert, Roger Allan Cropp, Pernilla Bohlin-Nizzetto, Sara Broomhall, Hayley Hung, Hang Xiao, Susan Bengtson Nash, Darryl William Hawker |
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| Rok vydání: | 2017 |
| Předmět: |
Pollutant
Air Pollutants Volatilisation 010504 meteorology & atmospheric sciences Atmosphere Sampling (statistics) Trifluralin Antarctic Regions General Chemistry 010501 environmental sciences Pesticide 01 natural sciences Polychlorinated Biphenyls Toxaphene chemistry.chemical_compound chemistry Environmental chemistry Hydrocarbons Chlorinated Environmental Chemistry Environmental science Pesticides Endosulfan 0105 earth and related environmental sciences Environmental Monitoring |
| Zdroj: | Environmental sciencetechnology. 51(23) |
| ISSN: | 1520-5851 |
| Popis: | In the first multiyear sampling effort for POPs in the eastern Antarctic atmosphere, 32 PCBs and 38 organochlorine pesticides were targeted in air collected with a high-flow-through passive sampler. Agricultural chemicals were found to dominate atmospheric profiles, in particular HCB and endosulfan-I, with average concentrations of 12 600 and 550 fg/m3, respectively. HCB showed higher concentrations in the austral summer, indicative of local, temperature-dependent volatilisation, while endosulfan-I appeared to show fresh, late-austral-summer input followed by temporally decreasing levels throughout the year. The current-use herbicide, trifluralin, and the legacy pesticides mirex and toxaphene, were detected in Antarctic air for the first time. Trifluralin was observed at low but increasing levels over the five-year period. Its detection in the Antarctic atmosphere provides evidence of its persistence and long-range environmental transport capability. While a time frame of five years exceeds the duration o... |
| Databáze: | OpenAIRE |
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