Reflected light holographic microscopy of moving objects

A holographic system that images front-illuminated, fast-moving microscopic objects is described. Focused micrographs can be generated under circumstances when ordinary microscopy (due to object movements) and transilluminated holographic microscopy (due to object opaqueness) cannot be used. Details of the experimental arrangements, easy-to-use working formulae for obtaining optimum image reproduction, and results from the application of the system to studies of droplet and solid particle suspensions in liquids are presented.     

State-of-the art of selective detection and identification of I-, Br-, Cl-, and F-containing compounds in gas chromatography and liquid chromatography

This review article presents an overview of halogen-specific detection in gas chromatography (GC) and liquid chromatography (LC). Attention is primarily focused on the use of plasma emission spectroscopy and plasma mass spectrometry as detectors, but other halogen-selective detection principles are also mentioned. Different instrumental configurations are discussed both with respect to technical set-up and performance, the principal reasons for halogen-selective detection are highlighted, and recent applications are reviewed from areas such as environmental chemistry, petroleum characterization, and drug analysis.