Unknown GC/MS peaks can be screened against a mass spectral library to help with tentative identification. In this video, I show how I use the TIC Library Search function in Agilent EnviroQuant with the NIST mass spectral library. I cover: • Opening the TIC Library Search function • Selecting the NIST library • Setting search and integration parameters • Running a library search across the chromatogram • Reviewing tentative compound identifications • Comparing match quality •

Your GC/MS calculation method controls how compounds are identified, quantified, calibrated, and evaluated. In this video, I walk through the key calculation-method parameters in Agilent EnviroQuant and show what I review when setting up or checking a method. I cover: • Compound identification settings • Internal standard assignments • Quantitation and qualifier ions • Retention-time parameters • Calibration levels and concentrations • Calibration curve and response-factor se

Clipping a GC column can shift retention times — but your GC/MS calculation method still contains the old values. In this video, I show how I update retention times in Agilent EnviroQuant after trimming a GC/MS capillary column. I walk through the actual software workflow: • Review the chromatogram after the column has been clipped • Check the new compound retention times • Load the appropriate quantitation/calculation method • Confirm compound identification • Open the calib