Atmospheric deposition of current-use and historic-use pesticides in snow at national parks in the western United States
Hageman KJ, Simonich SL, Campbell DH, Wilson GR, Landers DH. 2006. Atmospheric deposition of current-use and historic-use pesticides in snow at national parks in the western United States. Environmental Science & Technology. 40(10):3174–3180
There is growing evidence that pesticides and other semi-volatile organic compounds (SOCs) are accumulating in remote high-elevation and high-latitude ecosystems, according to literature. The objectives of the study were to quantify and document the distribution of pesticides in seasonal snowpack samples from seven national parks in the Western U.S, to investigate potential factors that may influence the distribution of pesticides in these parks, and to estimate the percentage of total concentration due to regional sources versus long-range sources for each of the most frequently detected current and historic use pesticides detected at each park. The current-use pesticides detected in seasonal snowpack samples at national parks in this study were dacthal (DCPA), chlorpyrifos, endosulfans (I and II), ç-hexachlorocyclohexane (lindane), trifluralin, and triallate. The presence of these in remote ecosystems implies that they are persistent enough to undergo transport to remote ecosystems in national parks, according to the researchers.
- Type
- Journal Article
- Authors
- Hageman, Kimberly; Simonich, Staci; Campbell, Donald; Wilson, Glenn; Landers, Dixon
- Units
- ARCN , ARD , DENA , GAAR , GLAC , MORA , NOAT , ROMO , SEKI
- Keywords
- AIRBIB, Alpine, ARD_Park-Air-Info_Collection, Atmospheric Deposition, Contaminants, Deposition, Pesticides, regional transport, seasonal snowpack, SOCs, subartic and arctic ecosystems, Toxics