Record Display for the EPA National Library Catalog

RECORD NUMBER: 395 OF 502

Main Title Sampling of glacial snow for pesticide analysis /
Author Stengle, Thomas R.,
Other Authors
Author Title of a Work
Lichtenberg, James J.,
Houston, Charles S.,
Publisher United States Environmental Protection Agency, Office of Research and Monitoring,
Year Published 1971
Report Number EPA 16020-GAG-02/71; W7110675; EPAWQO-16020-GAG-02/71
OCLC Number 00549123
Subjects Pesticides--Environmental aspects ; Snow--Analysis ; DDT (Insecticide) ; Yukon ; Yukon Territory
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101N3TJ.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD  EPA 16020-GAG-02-71 Headquarters Library/Washington,DC 05/12/2014
EJEM  TD427.P35S74 1971 OCSPP Chemical Library/Washington,DC 06/30/2006
ELBD ARCHIVE EPA 16020-GAG-02-71 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 16020-GAG-02-71 repository copy AWBERC Library/Cincinnati,OH 02/24/2020
Collation vi, 23 pages : figures, tables ; 28 cm
Notes
"February 1971." Includes bibliographical references (page 23).
Contents Notes
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.