Introduction
使用新型的不需要活化的Nexus 固相萃取SPE小柱萃取高含糖食品中的农药

A solid phase extraction method has been
developed to analyze pesticides in a variety
of high sugar foods. This method uses a
minimum of organic solvents and no
halogenated solvents. Thirteen pesticides
were found to have reasonable recoveries
at ppb levels. The pesticides were spiked
into corn syrup, maple syrup, honey,
and grape jelly and quantified with a
standard in matrix to minimize signal
enhancement effects. The sample is
dissolved in water and loaded directly on
to a Varian Nexus SPE tube with no
pre-conditioning. After a water rinse the
analytes are eluted and analyzed using
GC-FPD for phosphated pesticides and
GC-ELCD for halogenated pesticides.