Environmental Quality Research. The Phytotoxicity of Missile Exhaust Products: Short Term Exposures of Plants to HCL, HF and Al(2)03.
Annual rept. no. 2, 16 Jun 74-31 May 75,
CALIFORNIA UNIV IRVINE
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Eight species of ornamentals and three garden plants were selected in order to determine the range of phytotoxic responses to hydrogen chloride, hydrogen fluoride and alumina particles. The experimental plants were grown in a greenhouse or growth chambers or growth chambers under controlled conditions. Two exposure chambers were constructed to accomodate the exposure of plants to both gaseous and particulate pollutants. Methods and equipment for the generation, dispensing and monitoring of pollutants were established. Plants of various age levels from each species were exposed to the missile products at various concentrations for periods of 10 or 20 minutes each. Plants received a single exposure for phytotoxic range-finding studies as well as multiple exposure to determine cumulative effects of toxicants. Growth conditions such as temperature, relative humidity and light intensity which could affect plant responses were also under investigation. The exposed plants were evaluated 24 to 48 hours after exposure and injury symptoms were recorded.
- Air Pollution and Control