Analytical methods for the determination in soil of herbicides used in forestry by GC-NPD and GC/MS
Analysis of several herbicides used to control weeds in forestry (simazine, hexazinone, pendimethalin, and thiazopyr) has been performed by GC-NPD and GC/MS. A method based on the extraction of soil samples in small columns has been used for the determination of these compounds in soil. Acetone/water (9010) was used for the extraction of all four compounds, and ethyl acetate can be used when the determination of hexazinone is not required. The recoveries through the method were always >80%, and the detection limit was <0.01 ppm for GC-NPD and GC/MS. Soil samples from experimental fields, taken at different times after treatment from the plow layer, were analyzed according to this method, and values similar to those obtained by a conventional method using mechanical shaking extraction were obtained.
| Main Authors: | , , , |
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| Format: | artículo biblioteca |
| Language: | English |
| Published: |
American Chemical Society
1998
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| Subjects: | Hexazinone, Pendimethalin, Simazine, Thiazopyr, Soil, Extraction, |
| Online Access: | http://hdl.handle.net/20.500.12792/3420 http://hdl.handle.net/10261/290448 |
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