Vol. 17 No. 1 (2001)

Research Articles

• Antimicrobial Triterpenes and Sterols from Pseuderanthemum bicolor

  Consolacion Y. Ragasa, Josefina Yumul, Jerome Ganzon, John A. Rideouf

  1-4

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• Development of Quality Assurance Methods for Medicinal Plants Using Gas Chromatography Analysis

  Fabian M. Dayrit, Marites J. Pasuelo

  5-11

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• Analvsis of Organophosphorus Pesticides in Water by Graphitized Carbon Black Extraction and Gas Chromatouraphy-Mass Spectrometry

  Ma. Pythias Espino, Diana S. Aga, Mihn H. Nguyen, Heinz Singer, Michael Berg, Stephan Müller

  13-18

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• Miniature PH Sensor Based on Electropolymerized Polyaniline

  Karen S. Santiago, Christina A. Binag

  19-25

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• The Teaching of Analytical Chemistry in the Philippines

  Fortunato Sevilla III, Christina A. Binag

  27-33

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