Analyses of Sprayed Apples for Lead and Arsenic

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In continuation of work on arsenical residues, apples grown at Yonkers, New York, that had received the standard spray schedule comprising 5 applications of lead arsenate (4 lbs. to 150 gals.), during the season of 1927, showed on analysis an average of 0.912 mg. of metallic lead per kg. of fruit and a maximum of 1.80 mg. per kg. The arsenic trioxide found in the samples averaged 0.099 mg. per kp,. of fruit with a maximum of 0.193 mg. per kg., this maximum being considerably below the limit adopted by the Royal Commission on Arsenical Poisoning in 1903 (1.429 mg. per kg.). There were 33.24 inches of rainfall from the time the first spray was app1:ed until the date the fruit was picked.

Document Type: Research Article

Publication date: February 1, 1928

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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