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Abstract
Samples from three cultivated soils and one from a roadside, all in Ontario, were found to contain <1 to 68 ppb of 1,2‐Benzanthracene (BA). Two plots subjected to stubble (residue of wheat crop) burning annually for 15 years did not contain significant amounts of BA, although polyaromatic hydrocarbons, including BA, result from pyrolysis of most organic matter.