| Abstract: | Pesticides, in minute quantities, may affect the regimen of streams, and because they may concentrate in sediments, aquatic organisms, and edible aquatic foods, their detection and their measurement in the parts-per-trillion range are considered essential.
In 1964 the U.S. Geological Survey at Menlo Park, Calif., began research on methods for monitoring pesticides in water. Two systems were selected--electron-capture gas chromatography and microcoulometric-titration gas chromatography. Studies on these systems are now in progress. This report provides current information on the development and application of an electron-capture gas chromatographic procedure. This method is a convenient and extremely sensitive procedure for the detection and measurement of organic pesticides having high electron affinities, notably the chlorinated organic pesticides. The electron-affinity detector is extremely sensitive to these substances but it is not as sensitive to many other compounds. By this method, the chlorinated organic pesticide may be determined on a sample of convenient size in concentrations as low as the parts-per-trillion range. To insure greater accuracy in the identifications, the pesticides reported were separated and identified by their retention times on two different types of gas chromatographic columns. |
| Genre: | USGS Numbered Series |
| ProdID: | 2068 |
| Citation Author: | Lamar, William L.; Goerlitz, Donald F.; Law, LeRoy M. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iii, 12 p. ;24 cm. |
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| Citation Publisher: | U.S. G.P.O., |
| Citation Series: | Water Supply Paper |
| Citation Series Code: | WSP |
| Citation Series Number: | 1817-B |
| Citation Search Results Text: | Identification and measurement of chlorinated organic pesticides in water by electron-capture gas chromatography; 1965; WSP; 1817-B; Lamar, William L.; Goerlitz, Donald F.; Law, LeRoy M. |
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| Citation Year: | 1965 |
| Type: | citation/reference |
| Text: | Identification and measurement of chlorinated organic pesticides in water by electron-capture gas chromatography; 1965; WSP; 1817-B; Lamar, William L.; Goerlitz, Donald F.; Law, LeRoy M. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/wsp/1817b/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/wsp/1817b/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. G.P.O., |
