Trends of polymer analysis by liquid chromatography.

Simulataneous Analysis of Trimethoprim and Sulphamethoxazole Drug Combinations in Dosage Forms by High Performance Liquid Chromatography

A sensitive high performance liquid chromathography (HPLC) analytical procedure was developed for the quantitive determination of trimethoprim (TM* and sulphamethoxazole (SM) in commercial dosage forms. C18 analytical column (stainless steel, 25 cm * 4.6 mm i.d.) was packed with 5-*m particles of the reversed phase material and used for assays. Mobile phase containing 0.025 M sodium phosphate...

Analysis of Polymer Additives and Impurities by Liquid Chromatography/Mass Spectrometry and Capillary Electrophoresis/Mass Spectrometry

The analysis of polymeric materials can be quite challenging because such samples are often of complex nature due to the presence of various groups of additives, compounding ingredients, and fillers. Of special importance are stabilizers that protect the material from degradation by thermal stress during manufacture or from environmental impact during use. Apart from intact stabilizers, the deg...

Toxicological Analysis: Liquid Chromatography

Coleman WM III (1992a) The volatile and semivolatile components of supercritical Suid and methylene chloride extracts of selected tobaccos. Journal of Essential Oil Research 4: 113. Coleman WM III (1992b) Automated purge-and-trapgas chromatography analysis of headspace volatiles from natural products. Journal of Chromatographic Science 30: 159. Coleman WM III (1996) A chromatographic study of t...

Identification and Analysis of the Migration of Primary Aromatic Amines from Flexible Food Packaging by High-performance Liquid Chromatography (HPLC)

Background and Objectives: Primary Aromatic Amines (PAAs) are contaminants that can migrate from food flexible packaging. The main origin of these compounds is polyurethane adhesives used in the laminating process of multilayer films. Residual aromatic di-isocyanates of the reaction of adhesive polymerization migrate into the food, and are hydrolyzed to PAAs by the moisture of food. 2,4- and 2,...

extraction and determination of nalidixic acid from tablet matrix by molecular imprinted polymer and determination by high performance liquid chromatography