A report on the increasing usage of chemicals in water treatment, particularly the use of coagulants and flocculants. (BB)

Reviews the current state of information on the significance of phosphate as a water pollutant and the relationship between phosphorus loads and water quality. Areas that need additional research are discussed. (Author/BB)

A direct aqueous injection (DAI) technique was compared with the purge method for chloroform measurement in drinking water. The DAI method gave consistently higher values for chloroform than the purge method. The results indicated the need for caution in the interpretation of chloroform and other trihalomethane values generated by DAI. (Author/MA)

Current use of chlorination technology to disinfect water supplies can cause the production of undesirable products, among them chloroform and chlorobenzene. Alternatives to this methodology include the use of ozone, chlorine dioxide, and bromine chloride in place of chlorine. Presently, the methods are feasible in developed countries only. (MA)

This method of image enchancement and real-time imput of 3-D microscopic objects into an optical pattern recognition system is designed to identify and count diatoms as a means of water pollution assessment. The method consists of directing a low-power laser beam into a microscope to produce a coherent image of the specimen. (Author/BB)

This article relates the historical origins of the EPA's Priority Pollutants list and the development of the Priority Pollutant Protocol. Then, it summarizes the status of the current analytical procedures in their present and still-developing forms. (BB)

Integrated Exposure Assessment Monitoring is the coordination of environmental (air, water, land, and crops) monitoring networks to collect systematically pollutant exposure data for a specific receptor, usually man. (Author/BB)

Describes a recently developed technique for the rapid and simple detection of organophosphorus inhibitors in water using paper impregnated with cholinesterase. (JR)

Describes the use of modeling techniques to contribute to the basic knowledge of ecologic science, and in solving problems of biological production, resource-use planning and management, and environmental quality. (JR)

The highlights of a symposium held in October, 1977 spotlight some problems and solutions. Topics include wastes from coal technologies, radioactive wastes, and industrial and agricultural wastes. (BB)

The conference reported on here placed the greatest emphasis on the nature of man and his relationship with his surroundings. The major conclusion reached was that man's options are limited and his future bleak unless the earth's resources are better managed and more equitably shared. (Author/BB)