Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Collaborative Study of a Gas Chromatographic Method for Ronnel in Feeds
View through CrossRef
Abstract
A GLC method (flame ionization detector) for ronnel in cattle feeds at levels of 0.038, 0.041, and 0.055% was studied by 11 collaborators. The method involves extraction of ronnel by shaking with acetone followed by direct chromatographic measurement. The method is simple and rapid (no cleanup required), measures true ronnel, and is free from interferences present in the UV methods previously studied. Agreement between laboratories was satisfactory; coefficients of variation were 11.0, 12.0, and 7.2%. Ronnel recoveries were 81.1, 93.5, and 98.0%. Low recovery from the first sample may be due to ronnel hydrolysis or binding during storage (sample was 8 months old). The Associate Keferee recommends that the method be adopted as official first action.
Title: Collaborative Study of a Gas Chromatographic Method for Ronnel in Feeds
Description:
Abstract
A GLC method (flame ionization detector) for ronnel in cattle feeds at levels of 0.
038, 0.
041, and 0.
055% was studied by 11 collaborators.
The method involves extraction of ronnel by shaking with acetone followed by direct chromatographic measurement.
The method is simple and rapid (no cleanup required), measures true ronnel, and is free from interferences present in the UV methods previously studied.
Agreement between laboratories was satisfactory; coefficients of variation were 11.
0, 12.
0, and 7.
2%.
Ronnel recoveries were 81.
1, 93.
5, and 98.
0%.
Low recovery from the first sample may be due to ronnel hydrolysis or binding during storage (sample was 8 months old).
The Associate Keferee recommends that the method be adopted as official first action.
Related Results
Methods for Determining Ronnel in Feeds and Mineral Mixtures
Methods for Determining Ronnel in Feeds and Mineral Mixtures
Abstract
The official first action GLC method (electron capture detector) for ronnel in feeds, 38.126–38.129, is rapid and dependable but has been found to give low ...
Collaborative Study of Methods for Determination of Ronnel in Feeds and Mineral Mixtures
Collaborative Study of Methods for Determination of Ronnel in Feeds and Mineral Mixtures
Abstract
A GLC method (electron capture detector) for ronnel in cattle feeds at the 0.040% level and a UV method for ronnel in mineral mixtures (1–40% ronnel) were s...
Ultraviolet Spectrophotometric and Gas Chromatographic
Methods for Ronnel in Feeds
Ultraviolet Spectrophotometric and Gas Chromatographic
Methods for Ronnel in Feeds
Abstract
Two new methods for ronnel in feeds at levels of 0.035-0.60% ronnel were developed and studied by 10 collaborators. Methods involve extraction of the sample...
In Vitro Digestibility and Fermentation Kinetics of Agricultural By-product used as feed for Sheep in Trinidad, West Indies
In Vitro Digestibility and Fermentation Kinetics of Agricultural By-product used as feed for Sheep in Trinidad, West Indies
Abstract
The objective of this study was to determine the in vitro digestibility and gas production of agro-industrial by-products fed to sheep. This was done to determine ...
MON-015 Two Cases of Potential Oral Desmopressin Malabsorption Secondary to Concurrent Tube Feeds Administration in Patients with AVP-D (Arginine Vasopressin Deficiency)
MON-015 Two Cases of Potential Oral Desmopressin Malabsorption Secondary to Concurrent Tube Feeds Administration in Patients with AVP-D (Arginine Vasopressin Deficiency)
Abstract
Disclosure: G. Arora: None. V. Perugu: None. A.T. Drincic: None.
Introduction: AVP-D is an endocrine disorder characterized by non-osmo...
Ultraviolet Spectrophotometric Method for Ronnel in Feeds
Ultraviolet Spectrophotometric Method for Ronnel in Feeds
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...
Ultraviolet Spectrophotometric Method for Ronnel in Feeds
Ultraviolet Spectrophotometric Method for Ronnel in Feeds
Abstract
The ultraviolet spectrophotometric method for Ronnel in feed mixtures, presented at the 1963 AOAC meeting, was studied further at levels of 0.015–0.6% Ronne...
Manager Of Supply Planning And Projects
Manager Of Supply Planning And Projects
Abstract
The Southern California Gas Company is responsible for providing gas service to 12 million southern Californians. SoCal Gas, like other major gas distrib...