Garrido JL and Zapata M (1996) Ion-pair reversed-phase high-performance liquid chromatography of algal chlorophylls. Journal of Chromatography A 738: 285. Hodgson DA, Wright SW and Davies N (1997) Mass spectrometry and reverse phase HPLC techniques for the identiRcation of degraded fossil pigments in lake sediments and their application in palaeolimnology. Journal of Paleolimnology 18: 335. Jef...

purpose: to evaluate total plasma homocysteine level during the acute phase of central retinal vein occlusion (crvo) compared with a matched healthy group in iranian population, and determine whether hyperhomocysteinemia is also a risk factor for crvo. methods: a study group contains 54 patients presenting with crvo in recent one month, acute phase of the decease, was compared for fasting total...

Introduction Drug manufacturing control requires high level and intensive analytical and chemical support of all stages to ensure the drug's quality and safety. The pharmacopeia constitutes a collection of recommended procedures for analysis and specifications for the determination of pharmaceutical substances, excipients, and dosage forms that is intended to serve as source material for refere...

The manufacturing equipment in pharmaceutical industry, could be used in multiple and sharedproduction lines, therefore there is the possibility for the products components and active ingredients tointermix and pollute one another. In this purpose the cleaning methods are used, to reduce the residueslevels from the machinery surfaces and decrease the residues to acceptable level but these metho...

glichkeiten. Angewandte Chemie 105: 659; Angewandte Chemie, International Edition English 32: 629. Francuskiewicz F (1994) Polymer Fractionation (Springer Lab Manual). Heidelberg: Springer Verlag. GloK ckner G (1987) Polymer Characterization by Liquid Chromatography. Amsterdam: Elsevier. GloK ckner G (1991) Gradient HPLC of copolymers and chromatographic cross fractionation. Berlin: Springer Ve...

Temperature-Controlled Microchip Liquid Chromatography System Thesis by Victor Chi-Yuan Shih Doctor of Philosophy in Electrical Engineering California Institute of Technology High-performance liquid chromatography (HPLC) is one of the most important analytical tools heavily used in the fields of chemistry, biotechnology, pharmaceutics, and the food industry. The power of liquid chromatography c...

Determination of drug residues in food is of great importance due to their toxicity. Long-term exposure with low level of drug residues could be important, especially in children. Based on document study, oxytetracycline (OTC) is a prophylaxis and treatment agent for great number of diseases and possesses a broad spectrum activity against many pathogenic organisms and can be toxic or cause alle...

A method for estimation of volume of alkyl bonded phases for high performance liquid chromatography (HPLC) is presented. It is based on application of macromolecular probes, which are able to elute from the HPLC column without entering the bonded groups and thus to monitor their volume. The appropriate mathematical expression of results were looked for and it was concluded that the optimum repr...