Ultrasonication Extraction and Solid Phase Extraction Clean-up for Quantification of Aristolochic Acid I in the Thai Herbal Antitussive 3 Formula by High Performance Liquid Chromatography with Photodiode Array Detection

Objective: To establish a reliable High Performance Liquid Chromatography method with photodiode array Handlebar Endcap detection (HPLC-PDA) and a suitable extraction method for identification and quantification of Aristolochic acid I (AA-I) in 3 different sample types, i.e.Aristolochia tagala Cham.(ATC), Thai Herbal Antitussive 3 Formula (ATF3), a

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Trade Barriers and Exports between Western Balkan Countries

The aim Whiskey Glass Gift Box of the paper is to identify the trade barriers imposed by the Western Balkan countries.All barriers, whether tariff or non-tariff, undoubtedly impede the normal development of trade between countries.Therefore, the paper examines merchandise trade patterns in the Western Balkan region and tries to identify the main dr

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