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L A Halper

Publications and source records attributed to L A Halper.

5 recordsLinked to original sources

Toxic air pollution across a state line: implications for the siting of resource recovery facilities.

Massive volumes of solid waste are produced in the United States. Options for disposal are limited. Incineration and recycling are frequently proposed solutions. However, incinerators and waste recovery facilities, such as scrap smelters, generate hazardous air pollutants and toxic ash. Their potential hazards to health have not been adequately assessed. To illustrate the policy issues surrounding waste incineration and resource recycling, we examine the case of U.S. Metals, a scrap metals recovery plant in Carteret, New Jersey. This plant emitted 20 kilograms of dioxin in its 25 years of operation. It also released 86 tons of lead annually; nearby air lead levels were repeatedly in violation of standards. Construction of a tall stack caused export of toxic emissions from the plant to Staten Island, New York; high concentrations of lead were documented in surface soil on Staten Island. Because neither the State of New Jersey nor the U.S. Environmental Protection Agency were willing to regulate emissions from the plant, New York, the downwind state, was forced to sue U.S. Metals in federal court. The suit resulted ultimately in closing the plant. The case illustrates the difficulties in regulating pollution across state lines, a difficulty compounded by the abdication of responsibility by state and federal agencies. Further, the episode appears paradigmatic of a disturbing trend by state and local governments to locate waste combustion facilities at sites which will resolve problems of solid waste by encouraging export of airborne pollutants across regulatory boundaries.

Air Pollutants↗

Binding of specific ATP citrate lyase and fatty acid synthetase antibodies to heavy populations of rat liver polysomes.

The polysome fractions involved in the synthesis of the rat-liver inducible lipogenic enzymes, ATP citrate lyase and fatty acid synthetase, were identified by their binding of radioiodinated specific antibodies to enzyme. Both of these populations of specific polysomes were shown to be markedly heavier than specific polysomes involved in albumin synthesis. The quanity of antibody bound to the lipogenic enzyme-related polysomes was markedly affected by the dietary status of the animal. A dietary regimen which induced ipogenesis resulted in a tenfold increase in the hepatic activities of these enzymes found in normally fed animals. The radioactivity bound to hepatic polysomes of induced rats was likewise greater than tenfole higher, presumably reflecting an increase in the number of polysomes active in enzyme synthesis. The fasting state resulted in lower hepatic enzyme activity than normal and correspondingly less binding of ATP citrate lyase and fatty acid synthetase antibodies to the heavy polysomes of the sucrose gradient.

ATP Citrate (pro-S)-Lyase↗