[Determination of caffeine and sodium benzoate contents in caffeine and sodium benzoate injection by P-matrix method].
The contents of caffeine and sodium benzoate injection may be determined by P-matrix method without separation of its components. BSAIC language is used for programming. The average recovery of caffeine is 100.0% and that of sodium benzoate is 99.95%. The variation coefficient of caffeine is 0.40% and that of sodium benzoate is 0.65%. On the basis of recovery rate and data observed it is concluded that this method is accurate, reliable, simple and rapid as compared with the standard pharmacopoeia regulations.
Huang
X
X
Department of Analytical Chemistry, Hebei Medical University, 050017 Shijiazhunag.
Wang
Y
Y
Hou
H
H
Zhang
Z
Z
Liu
W
W
D002110:Caffeine / Q000008:administration & dosage* / Q000032:analysis*; D007267:Injections; D011381:Programming Languages; D015203:Reproducibility of Results; D020160:Sodium Benzoate / Q000008:administration & dosage* / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet / Q000706:statistics & numerical data
D002110:Caffeine; D020160:Sodium Benzoate