PESTICIDE RESIDUES IN FOOD - 1983
Sponsored jointly by FAO and WHO
Data and recommendations of the joint meeting
of the FAO Panel of Experts on Pesticide Residues
in Food and the Environment and the
WHO Expert Group on Pesticide Residues
Geneva, 5 - 14 December 1983
Food and Agriculture Organization of the United Nations
The Codex Committee on Pesticide Residues requested the Meeting
to reconsider the definition of the residue. The original data
submitted to the 1973 Meeting1 and some additional data were studied
and the relevant information is summarized in this re-evaluation.
RESIDUES RESULTING FROM SUPERVISED TRIALS
The residue data summarized in FAO/WHO 1973 indicates that the
oxygen analogue either is not detectable or its concentration is lower
than 10 percent of the total residue.
Methods used for the determination of residues in French beans,
cauliflower and kohlrabi and cotton seed were suitable for determining
the oxygen analogue separately. No residue was detectable. The other
results were obtained with colorimetric methods, which measured the
total residue. The low level of oxygen analogue in crops examined and
the findings of the members of the Codex Ad Hoc Working Group on
Methods of Analysis lead to the conclusion that the oxygen analogue of
azinphos-ethyl does not contribute significantly to the total residue.
The Meeting concluded that the metabolites can be excluded from
the definition of the residue. The maximum residue limits refer to the
parent compound alone. The new definition does not alter the limits
1 See Annex 2 for FAO and WHO documentation.