Adaptation of Glass Columns for Clean-up in Rp-hplc Determination of Aflatoxins with Post-column Derivatisation with Bromine and Fluorescence Detection
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Application of Narrow-Bore HPLC Columns in Rapid Determination of Sildenafil Citrate in Its Pharmaceutical Dosage Forms
A special type of silica-based columns has been recently introduced into the market which is called narrow-bore columns. They have lower internal volume than the standard high-performance liquid chromatography (HPLC) columns and thus reduce the solvent consumption by almost 80%. A simple, accurate and environmentally friendly reversed phase- HPLC (RP-HPLC method) which could be used in ...
متن کاملApplication of Narrow-Bore HPLC Columns in Rapid Determination of Sildenafil Citrate in Its Pharmaceutical Dosage Forms
A special type of silica-based columns has been recently introduced into the market which is called narrow-bore columns. They have lower internal volume than the standard high-performance liquid chromatography (HPLC) columns and thus reduce the solvent consumption by almost 80%. A simple, accurate and environmentally friendly reversed phase- HPLC (RP-HPLC method) which could be used in ...
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Background & Aims: In this study, using a liquid-liquid microextraction method for pre-concentration trace amounts of aflatoxins, the amount of Aflatoxins B1 and B2 in powdered milk was determined. Determination of aflatoxins was done by using high-performance liquid chromatography coupled with fluorescent detector. Method: Samples were extracted by immunoaffinity column (IAC) clean-up, and the...
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Introduction: Aflatoxins (AFs) are a group of mycotoxins created as metabolic items for the most part by three types of Aspergillus including Aspergillus flavus, Aspergillus parasiticus and the uncommon Aspergillus nomius. Eighteen aflatoxins have been identified up to now, but only six of them have been found in food and feed. Methods: The occurrence of aflatoxins in 32 samples of roasted red...
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A solid-phase extraction (SPE) method for sample clean-up and preconcentration followed by reversed-phase high-performance liquid chromatography (RP-HPLC) with uv detection is reported for determination of polycyclic aromatic hydrocarbons (PAHs) in the caspian seawater. A good resolution was obtained using acetonitrile:water (40:60) as mobile-phase for separation of these compounds. The eff...
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