Liquid chromatographic determination of total homocysteine in blood plasma with photometric detection

2004 ◽  
Vol 800 (1-2) ◽  
pp. 275-280 ◽  
Author(s):  
Alexander A Zhloba ◽  
Eduard L Blashko
Keyword(s):  
Blood Plasma ◽  
Chromatographic Determination ◽  
Photometric Detection ◽  
Liquid Chromatographic Determination ◽  
Total Homocysteine ◽  
Liquid Chromatographic ◽  
In Blood Plasma

Liquid Chromatographic Determination of Diazepam in Tablets: Collaborative Study

1985 ◽  
Vol 68 (3) ◽  
pp. 545-546
Author(s):  
Michael Tsougros
Keyword(s):  
Collaborative Study ◽  
Internal Standard ◽  
Chromatographic Determination ◽  
Reverse Phase ◽  
Photometric Detection ◽  
Liquid Chromatographic Method ◽  
Liquid Chromatographic Determination ◽  
The Mean ◽  
Liquid Chromatographic

Abstract A stability indicating liquid chromatographic method for the determination of diazepam in tablets was collaboratively studied by 6 laboratories. The method uses a Cig reverse phase column, a methanolwater mobile phase, p-tolualdehyde as the internal standard, and photometric detection at 254 nm. The collaborators were supplied with a synthetic tablet powder and 3 commercial tablet samples. The mean recovery of diazepam from the synthetic tablet powder was 100.2%. For all samples analyzed, the coefficient of variation was < 1.5%. The method has been adopted official first action.

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