<報文>輸入レモンに残留する2,4-Dの測定

概要

論文の詳細を見る
It had been well known that imported citrus fruits were treated with OPP and TBZ in order to protect from mold. Recently we heard imported lemons were also treated with 2, 4-D（2,4-Dichlorophenoxyacetic acid）. So we measured 2,4-D in lemons by the GC/MS-SIM method as follows. Surface of lemons（10g）were sliced and soaked in methanol（5ml） and formic acid （1ml）more than 24 hours. Extract solutions （2ml） were added concentrated sulfuric acid （5μl）for esterification, and benzene（1ml）for extract 2, 4-D methyl estel. The layers of benzene were analyzed by GC/MS-SIM（m.u. 233.985 and 235.982）. We baught 53 samples of lemons in Tokyo area from Jul. 1990 to Dec. 1991 and anallyzed. 2,4 -D was detected from 39 samples （mostly Sunkist brand imported from USA）, but not detected from 3 samples which indicated Japanese products.
横浜国立大学の論文