scholarly journals Determination of thermodynamic parameters of morpholinium 2-(5-(pyridinyl)-1,2,4-triazole-3-ylthio)acetate and its impurities in conditions of reverse phase chromatography

2020 ◽  
Vol 0 (3) ◽  
Author(s):  
B. O. Varynskyi
Keyword(s):  
Thermodynamic Parameters ◽  
Reverse Phase ◽  
Reverse Phase Chromatography

Liquid Chromatographic Determination of Methiocarb in Technical and Formulated Products: Collaborative Study

1984 ◽  
Vol 67 (3) ◽  
pp. 492-493
Author(s):  
Stephen C Slahck ◽  
◽  
A A Carlstrom ◽  
L T Chenery ◽  
N D Ellis ◽  
...  
Keyword(s):  
Coefficient Of Variation ◽  
Collaborative Study ◽  
Internal Standard ◽  
Chromatographic Determination ◽  
Reverse Phase ◽  
Reverse Phase Chromatography ◽  
Wettable Powder ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic

Abstract An LC method for the determination of methiocarb in methiocarb technical and formulated products has been subjected to a collaborative study with 9 participating collaborators. Formulations are extracted with acetonitrile and analyzed by reverse phase chromatography, with acetophenone as an internal standard. Collaborators were furnished samples of technical, 75% wettable powder, 75% seed treater, 75% concentrate, and 50% hopper box treater. Coefficient of variation values obtained on the 5 samples were 0.71, 0.83, 0.62, 1.57, and 0.82%, respectively. The method has been adopted official first action.

Liquid Chromatographic Determination of Aminocarb in Technical and Formulated Products: Collaborative Study

1985 ◽  
Vol 68 (3) ◽  
pp. 567-569 ◽  
Author(s):  
Stephen C Slahck
Keyword(s):  
Collaborative Study ◽  
Internal Standard ◽  
Chromatographic Determination ◽  
Reverse Phase ◽  
Reverse Phase Chromatography ◽  
Coefficients Of Variation ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic

Abstract An LC method for determination of aminocarb (Matacil™) in aminocarb technical and formulated products has been developed and subjected to a collaborative study with 10 participating collaborators. Formulations are extracted with tetrahydrofuran-buffer (60 + 40) and analyzed by reverse phase chromatography, with n-butyrophenone as internal standard. Collaborators were furnished with standards and samples of technical and 180 oil flowable products for analysis. Coefficients of variation obtained on these samples were 0.72 and 1.7%, respectively. The method has been adopted official first action.

scholarly journals Determination of Meloxicam in Egg Whites and Yolks Using Reverse Phase Chromatography

2017 ◽  
Vol 55 (6) ◽  
pp. 610-616 ◽  
Author(s):  
Sherry Cox ◽  
Joan Bailey ◽  
Molly White ◽  
Kristen Gordon ◽  
Marcy Souza
Keyword(s):  
Reverse Phase ◽  
Reverse Phase Chromatography

Liquid Chromatographic Method for Determination of Oxythioquinox in Technical and Formulated Products: Collaborative Study

1986 ◽  
Vol 69 (3) ◽  
pp. 490-492
Author(s):  
Stephen C Slahck ◽  
◽  
L B Aaron ◽  
O O Bennett ◽  
R M Elliott ◽  
...  
Keyword(s):  
Chromatographic Method ◽  
Collaborative Study ◽  
Internal Standard ◽  
Reverse Phase ◽  
Reverse Phase Chromatography ◽  
Coefficients Of Variation ◽  
Liquid Chromatographic Method ◽  
Liquid Chromatographic

Abstract A liquid chromatographic method for determination of oxythioquinox (Morestan®) in oxythioquinox technical and formulated products has been developed and collaboratively studied in 14 laboratories. Samples are dissolved in chloroform containing n-valerophenone as an internal standard, diluted with acetonitrile, and analyzed by reverse phase chromatography. Collaborators analyzed blind duplicate samples of oxythioquinox technical and 25 WP. Coefficients of variation were 1.06 and 1.72% for the technical and 25 WP samples, respectively. The method has been adopted official first action.

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