« Previous AbstractApplication of Volatile Organic Compound Analysis in a Nutritional Intervention Study: Differential Responses during Five Hours Following Consumption of a High- and a Low-Fat Dairy Drink    Next Abstract"Hybrid Analytical Platform Based on Field-Asymmetric Ion Mobility Spectrometry, Infrared Sensing, and Luminescence-Based Oxygen Sensing for Exhaled Breath Analysis" »

Environ Sci Technol

Title:		Atmospheric deposition of current-use and historic-use pesticides in snow at national parks in the western United States
Author(s):		Hageman KJ; Simonich SL; Campbell DH; Wilson GR; Landers DH;
Address:		"Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, USA"
Journal Title:		Environ Sci Technol
Year:		2006
Volume:		40
Issue:		10
Page Number:		3174 - 3180
DOI:		10.1021/es060157c
ISSN/ISBN:		0013-936X (Print) 0013-936X (Linking)
Abstract:		"The United States (U.S.) National Park Service has initiated research on the atmospheric deposition and fate of semi-volatile organic compounds in its alpine, sub-Arctic, and Arctic ecosystems in the Western U.S. Results for the analysis of pesticides in seasonal snowpack samples collected in spring 2003 from seven national parks are presented herein. From a target analyte list of 47 pesticides and degradation products, the most frequently detected current-use pesticides were dacthal, chlorpyrifos, endosulfan, and gamma-hexachlorocyclohexane, whereas the mostfrequently detected historic-use pesticides were dieldrin, alpha-hexachlorocyclohexane, chlordane, and hexachlorobenzene. Correlation analysis with latitude, temperature, elevation, particulate matter, and two indicators of regional pesticide use reveal that regional current and historic agricultural practices are largely responsible for the distribution of pesticides in the national parks in this study. Pesticide deposition in the Alaskan parks is attributed to long-range transport because there are no significant regional pesticide sources. The percentage of total pesticide concentration due to regional transport (%RT) was calculated for the other parks. %RT was highest at parks with higher regional cropland intensity and for pesticides with lower vapor pressures and shorter half-lives in air"
Keywords:		Agriculture *Air Movements Air Pollutants/*analysis/toxicity Arctic Regions Chemical Precipitation Ecosystem *Environmental Monitoring Pesticides/*analysis/toxicity Recreation Snow/*chemistry United States;
Notes:		"MedlineHageman, Kimberly J Simonich, Staci L Campbell, Donald H Wilson, Glenn R Landers, Dixon H eng P30ES00210/ES/NIEHS NIH HHS/ Research Support, N.I.H., Extramural Research Support, U.S. Gov't, Non-P.H.S. 2006/06/06 Environ Sci Technol. 2006 May 15; 40(10):3174-80. doi: 10.1021/es060157c"