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Ultraviolet Spectrophotometric Method for Ronnel in Feeds
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Abstract
The ultraviolet spectrophotometric method for ronnel in feeds, adopted as official, first action at the 78th Annual Meeting (1964), was studied at levels of 0.015–5.5% ronnel by 9 collaborators on 4 feed samples. The study was to confirm the 1964 work and to test the accuracy and reproducibility of a Dowex 2-X8 ion exchange resin separation of ronnel from its decomposition product, 2,4,5-trichlorophenol. When an aliquot of the extract was passed through the Dowex column, 2,4,5-TCP remained, while ronnel passed through. Collaborators obtained satisfactory results; therefore, the Associate Referee recommends adoption of the new method and repeal of the earlier method.
Title: Ultraviolet Spectrophotometric Method for Ronnel in Feeds
Description:
Abstract
The ultraviolet spectrophotometric method for ronnel in feeds, adopted as official, first action at the 78th Annual Meeting (1964), was studied at levels of 0.
015–5.
5% ronnel by 9 collaborators on 4 feed samples.
The study was to confirm the 1964 work and to test the accuracy and reproducibility of a Dowex 2-X8 ion exchange resin separation of ronnel from its decomposition product, 2,4,5-trichlorophenol.
When an aliquot of the extract was passed through the Dowex column, 2,4,5-TCP remained, while ronnel passed through.
Collaborators obtained satisfactory results; therefore, the Associate Referee recommends adoption of the new method and repeal of the earlier method.
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Ultraviolet Spectrophotometric Method for Ronnel in Feeds
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Abstract
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