Journal article
ANALYSIS OF FREE AND BOUND CHLOROPHENOXY ACIDS IN CEREALS
Extraction of the chlorophenoxy acids 2,4-D and dichlorprop in cereals has been examined by analyzing barley from spraying experiments. A procedure has been set up by combination of acid hydrolysis and enzymatic degradation followed by extraction and clean up on either silica gel or basic aluminum oxide.
The final determination is based on reaction with diazomethane and subsequently GLC with ECD. This procedure was compared with two different extraction procedures previously described in the literature. The one comparative procedure uses a mixture of 50% diethyl ether/hexane in presence of sulphuric acid and resulted in residues up to ten times lower than found after the combined acid hydrolysis/enzymatic degradation procedure.
In the second comparison a direct extraction was made with a mixture of 65% (v/v) acetonitrile in water. No differences were found between this and the combined acid hydrolysis/enzymatic degradation procedure.
| Language: | English |
|---|---|
| Publisher: | Springer-Verlag |
| Year: | 1975 |
| Pages: | 730-736 |
| ISSN: | 14320800 and 00074861 |
| Types: | Journal article |
| DOI: | 10.1007/BF01721944 |
2,4-Dichlorophenoxyacetic Acid Barley Grain Chromatography, Gas Diazomethane Edible Grain Environment Environment, general Filter Cake Forestry Hordeum Hydrolysis Methods Methylation Papain Sodium Hydrogen Carbonate Soil Science & Conservation Terrestrial Pollution Time Factors Waste Management/Waste Technology Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution dichlorprop
