Accumulation of sodium azide in copper or lead plumbing can result in the formation of copper or lead azide and an eventual explosion. Presents procedures to dispose of azide wastes. (GS)

This training manual presents material on the theoretical concepts involved in the methods listed in the Federal Register as approved for determination of trace metals. Emphasis is on laboratory operations. This course is intended for chemists and technicians with little or no experience in analytical methods for trace metals. Students should have…

Discussed are a brief explanation of the function of the vortex tube and some applications for the chemistry laboratory. It is a useful and inexpensive solution to many small-scale laboratory heating and cooling applications. (RH)

Although various methods are used to study solution chemistry, relationships between them are generally not self-evident, and the theory and procedure underlying each technique are frequently learned and memorized separately. Therefore, all of these methods are classified within a unified framework that clearly demonstrates relationships and…

Describes a method by which teachers can either produce their own silver of "technical" quality or recycle silver chloride residues to recover the silver for similar reuse. Procedures used are outlined and economics of the method are discussed. (JN)

A previous part (Analytical Chemistry; v57 n9 p1057A) discussed the theoretical aspects of diode ultraviolet-visual (UV-VIS) spectroscopy. This part describes the applications of diode arrays in analytical chemistry, also considering spectroelectrochemistry, high performance liquid chromatography (HPLC), HPLC data processing, stopped flow, and…

Background information, procedures used, and typical results obtained are provided for an experiment which: (1) examines the effect of residence time on conversion in a tubular flow reactor; and (2) compares the experimental conversions with those obtained from plug-flow and laminar-flow reactor models. (JN)

Reviews various spectroscopic techniques currently used to analyze real physical surfaces that bound two actual phases. Problems inherent in analyzing these surfaces and possible approaches that may be taken are considered. (JN)

Discusses some chemical hazards and precautions that should be taken. (RH)

Describes techniques for the preparation of simple soaps and detergents that can be used, by students, to investigate their properties and the differences between the two classes of compounds. (AL)

Recommends that teacher and student be provided with the broadest possible spectrum of meaningful and feasible experiments in which the comfort of the experimental animal is protected by the design of the experiment. (BR)