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Metadata of the chapter that will be visualized onlineCountry Kingdom of Saudi Arabia Abstract Gas chromatography–mass spectrometry (GC–MS) has been widely 1.2.1 Standard analyti Pyrex ® Laboratory Glassware. Today more than 800 laboratory glassware

Quality control solutions of low, medium, and high concentration levels (5, 10, and 20 µg/mL caffeine, respectively) were prepared from the above standard stocks. For preparation of sample solution, an aliquot of energy drink was directly taken from the product container and diluted 30 to 50 times in methanol (10 µ g/mL, target concentration).

Chemo-Profiling of Illicit Amphetamine Tablets Seized from Jazan, Saudi Arabia, Using Gas Chromatography-Mass Spectrometry and Chemometric Techniques Hassan A. Alhazmi , 1 , 2 Waquar Ahsan , 2 Mohammed Al Bratty , 2 Asaad Khalid , 1 Shahnaz Sultana , 3 Asim Najmi , 2 Hafiz A. Makeen , 4 Ibraheem M. Attafi , 5 Farid M. Abualsail , 5 Mohammed A. Arishy , 5 and Ibrahim A. Khardali 5

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Zou and N. Li, “Simple and environmental friendly pro- cedure for the gas chromatographic-mass spectrometric de- termination of caffeine in beverages,” Journal of Chromatography A, vol. 1136, no. 1, pp. 106–110, 2006. [25]

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Analysis of aflatoxins in foods retailed in Saudi Arabia using immunoaffinity column cleanup and high-performance liquid chromatography-fluorescence detection Author links open overlay panel Nora Abdullah AlFaris a Jozaa Zaidan ALTamimi a Zeid A. ALOthman b Saad Fahad Al Qahtani b Saikh M. Wabaidur b Ayman A. Ghfar b Tahany Saleh Aldayel a