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Fluoride Accumulation by Forage: Continuous vs. Intermittent Exposures to Hydrogen Fluoride
Author(s) -
MacLean D. C.,
Schneider R. E.
Publication year - 1973
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.2134/jeq1973.00472425000200040023x
Subject(s) - fumigation , fluoride , forage , phleum , hydrogen fluoride , red clover , environmental chemistry , chemistry , zoology , pollutant , livestock , agronomy , toxicology , environmental science , biology , ecology , inorganic chemistry , organic chemistry
The pattern of fumigation with gaseous HF markedly affects the rate and amount of F accumulated by timothy ( Phleum pratense L.) and red clover ( Trifolium pratense L.) plants. F accumulation was greater after continuous fumigations than when the same HF dose was provided in alternate 48‐hour exposures. The importance of the intermittent nature of exposures in addition to the pollutant concentration and duration of exposure in governing F accumulation suggests that pollution abatement action to protect livestock from ingested F should be based on the F content of forage rather than the concentration of airborne fluorides.