Gas-liquid chromatographic determination of XXXX in Mason jar lids and home canned foods.

@entity212 @entity211 @entity48023 @entity17058
A method was developed for the determination of @entity211 ( @entity212 ) in the seals and enamel of Mason lids. After extraction with acidic @entity17058 and methylation, the resulting pentachloroanisole was determined by gas-liquid chromatography (GLC) with electron capture detection (EC). Three of the 9 brands of lids examined contained @entity212 . Levels were as high as 198 micrograms/lid. Recoverires from fortified samples ranged from 92 to 103%. Six fruits and vegetables were canned by home canning techniques, using lids shown to contain @entity212 . @entity212 in these foods was determined by a procedure specifying extraction with acidic @entity17058 and gel permeation chromatography cleanup. Extracts were methylated and determined by GLC-EC. @entity212 was found in all the canned foods. Levels were as high as 16 micrograms/qt. Recoveries from foods fortified with @entity212 ranged from 85 to 94%. The presence of @entity212 was confirmed by GLC-mass spectrometric determination of the derivative, @entity48023 .
