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CH3041
SEPARATION
SEPARATION 1) If there is a mixture of analytes then a separation is often needed to resolve all of them in the analysis.
2) If interfering compounds are present
then these must be separated out from the analyte.  If both the matrix & analyte are well characterised then  interfering cmpds may be predicted in advance. Otherwise trial analyses must be run, any interferences identified and a separation protocol developed.
 eg. pesticides in cane, must remove sugar 
 to identify trace amounts of a pesticide.