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GC-ECD Determination of Lindane and Its Impurity alpha-HCH in Pharmaceutical Products
(Springer Heidelberg, Heidelberg, 2010)
A method was developed to determine lindane (gamma-HCH), the widely used organochlorine pesticide, and its impurity alpha-HCH in bulk and pharmaceutical products (shampoo, gel and emulsion). The system was able to successfully ...
Factorial Design in Optimization of Chromatographic Separation of Ramipril and Its Impurities
(Springer Heidelberg, Heidelberg, 2010)
In this paper optimization of chromatographic retention of ramipril and its five impurities employing factorial design is presented. On the basis of preliminary experiments three factors were chosen as inputs (acetonitrile ...