The Arsenic Content of Sprayed Apples

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Abstract
Individual analyses of 47 apples from trees sprayed according to the standard schedule comprising 5 applications of lead arsenate (4 Ibs. to 150 gals.) at Yonkers, New York, during the season of 1926, gave an average of .173 mg. of arsenic trioxide per kg. of fruit and a maximum of .704 mg. per kg. The quantity allowed by the Royal Commission on Arsenical Poisoning in 1903, was 1.429 mg. per kg. of foodstuffs. There was between 17.85 and 19.51 inches of rainfall from the time the first spray was applied until the date the fruit was picked. Analyses of cider (50 cc.) and jelly (30 g.) made from apples from this experiment, showed arsenic in such minute quantities that the determinations did not differ from the blanks of the reagents by any measurable amounts.

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