Optimization of the supercritical fluid extraction parameters for diazinon, carbosulfan and quinalphos from eggplant, yard long beans and purity detection of marketed brands of diazinon / [MS Thesis] Vegetables 547.593 OPT Thesis (MS)--Department of Applied Chemistry and Chemical Technology, University of Dhaka, Session 2004-05. Includes bibliographical references. Dhaka : University of Dhaka, 2009. 2009. 2009 Text [8]70 p. : eng