Maintaining Sensitivity and Reproducibility with the JetCleanJetCleanSelfSelf--Cleaning Cleaning Ion Source for Pesticides in Food Ion Source for Pesticides in Food and FeedFeed

摘要

Approximately 170 various pesticides were analyzed in Organic Honey on the 7010 Series Triple Quadrupole GC/MS using standard and JetClean source in the Acquire and Clean mode, utilizing carefully introduced hydrogen flow. The JetClean control is included in the MassHunter software with easy setup and operation. The chromatographic peak shape and baseline was improved using the Jetclean source particularly for the late eluting compounds. The calibration resulted very comparable R~2 values by both source, while the MDLs obtained at 1.25 pg level resulted lower values using the JetClean source. The %RSDs were comparable at higher, 2.5pg/μl level. The results indicate that the JetClean source meets and exceed the performance delivered by the standard source. Further study is undergoing to identify how the source maintenance period is extended when JetClean is applied compared to the standard source.