Abstract
In order to use the linear temperature programmed retention index (LTRI) for the negative ion chemical ionization (NCI) mode in which n-alkanes cannot be detected, LTRIs were newly defined using homologous series of pentafluorobenzyl and hexafluoroisopropyl esters. The method for converting LTRI based on n-alkanes to the new LTRIs was also developed and applied to PCB and chlorinated pesticide analysis. The results demonstrated that the LTRI databases, which were developed based on n-alkanes, could be utilized for NCI analysis.
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