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Pesticide residues on fruit. VI. —Lead and arsenic residues on apples
Author(s) -
Tew R. P.,
Sillibourne J. M.
Publication year - 1964
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740151004
Subject(s) - arsenic , pesticide residue , fungicide , pesticide , arsenate , residue (chemistry) , chemistry , ripening , lead (geology) , horticulture , food science , agronomy , biology , biochemistry , paleontology , organic chemistry
Further residue studies, including the measurement of lead, have confirmed previous findings that harvest residues of lead and arsenic from biologically effective programmes of lead arsenate sprays, applied by hand lance to bush trees, may exceed official limits at least on the earlier ripening varieties of apple. Residues on apples from standard trees sprayed by automatic machine with the same amount of insecticide plus a fungicide were much lower and varied considerably from the top to the bottom of the trees. The analytical results have shown that lead and arsenic residues are roughly in the ratio in which the elements are present in lead arsenate (3 : I) and have also revealed the order of tree to tree variation in harvest residues.