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Correspondence Exchange of Comments on the Simplex Algorithm Culminating in Quadratic Convergence and Error Estimation 1783 Steven Brumby, Research School of Chemistry, Australian National University, G.P.O. Box 4, ACT 2601, Australia and G. R. Phillips and Ε. Μ. Eyring*, Department of Chemistry, University of Utah, Salt Lake City, UT 84112
Technical Notes Construction of an Optically Transparent Thin-Layer-Electrode Cell for Use with Oxygen-Sensitive Species in Aqueous and Nonaqueous Solvents 1787 Matthew B. G. Pilkington, Barry A. Coles, and Richard G. Compton*, Physical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, England
Application of a Nested-Loop System for the Simultaneous Determination of Thorium and Uranium by Flow Injection Analysis 1789 José Luis Perez Pavon, Bernardo Moreno Cordero*, Jesus Hernandez Mondez, and Rosa Maria Isidro Agudo, Department of Analytical Chemistry, Bromatology and Food Sciences, University of Salamanca, Salamanca, Spain
Columbus, Ohio 43219-1837
(614) 237-3022 CIRCLE 122 ON READER SERVICE CARD
Heinrich Emanuel Merck Award for Analytical Chemistry 1990 In 1988 E. Merck, Darmstadt, has granted the Heinrich Emanuel Merck award for the first time. The award is endowed with DM 25,000 for the promotion of new developments in Analytical Chemistry, in particular for developing new methods in classical chemistry for sample preparation in trace analysis and their application in human environment. The next award will be granted in the scope of the European Conference on Analytical Chemistry which will take place in Vienna, August 1990. All young chemists up to the age of 45 are required to submit an original paper to the following adress; deadline will be the end of January 1990. Herrn Prof. Dr. Günther Tölg Institut für Spektrochemie und Angewandte Spektroskopie Postfach 1013 52 Bunsen-Kirchhoff-Str. 11 D-4600 Dortmund 1 The winner of this award will be chosen by an international jury of renowned analytical chemists. If you need more information please contact Prof. Dr. G. Tölg. E. Merck · Frankfurter Strasse 250 · D-6100 Darmstadt 1 CIRCLE 98 ON READER SERVICE CARD
On-Line Dilution Scheme for Liquid Chromatography
1791
Javier N. Oquendo* and Joseph A. Leone*, ARCO Oil and Gas Company, Research and Technical Services, Piano, TX 75075
