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Sampling of glacial snow for pesticide analysis

Author: Thomas R StengleJames J LichtenbergCharles S HoustonUniversity of Massachusetts at Amherst. Department of Chemistry.University of Vermont. College of Medicine.All authors
Publisher: Raleigh, NC : U.S. Environmental Protection Agency, 1971.
Series: Water pollution control research series.
Edition/Format:   Print book : National government publication : EnglishView all editions and formats
Database:WorldCat
Summary:
Snow samples were taken from the plateau glacier of Mt. Logan, Y.T., Canada during an investigation intent on demonstrating the feasibility of taking such samples from high altitude snowfields for pesticide analysis and developing sampling techniques devoid of contamination. Samples were also taken at a depth of 15 m to determine whether DDT concentration varied with the age of the snow. Pesticide analyses were  Read more...
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Additional Physical Format: Online version:
Stengle, Thomas R.
Sampling of glacial snow for pesticide analysis.
Washington [U.S. Environmental Protection Agency]; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1971
(OCoLC)645888843
Material Type: Government publication, National government publication, Internet resource
Document Type: Book, Internet Resource
All Authors / Contributors: Thomas R Stengle; James J Lichtenberg; Charles S Houston; University of Massachusetts at Amherst. Department of Chemistry.; University of Vermont. College of Medicine.; United States. Environmental Protection Agency. Office of Research and Monitoring.
OCLC Number: 549123
Notes: "Report date February 1971."
Description: vi, 23 pages ; 28 cm.
Series Title: Water pollution control research series.
Responsibility: by Thomas R. Stengle, James J. Lichtenberg, Charles S. Houston.

Abstract:

Snow samples were taken from the plateau glacier of Mt. Logan, Y.T., Canada during an investigation intent on demonstrating the feasibility of taking such samples from high altitude snowfields for pesticide analysis and developing sampling techniques devoid of contamination. Samples were also taken at a depth of 15 m to determine whether DDT concentration varied with the age of the snow. Pesticide analyses were performed using vapor phase chromatographic techniques. DDT was not detected within the limit of detectability (5 ng/l). Over half the samples were contaminated with PCB's which raised the detectability limit to 10-50 ng/1. The PCB contamination is believed to have come from the sampling auger, as an analysis of rinsings from it seemed to confirm. A sample taken from a depth of 1.5-2.5 m was acidified with distilled nitric acid, when thawed, and analyzed for 19 elements simultaleously using a direct reading emission spectrometer. Four elements were detected: boron at 4 ng/ml, cadmium at 9 ng/ml, chromium at 2 ng/ml, and iron at 47 ng/ml. The high levels of cadmium and especially iron suggest contamination from the alloy steels of the auger.

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Primary Entity

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