Hello. I am setting up a new development method for analyzing toxic chemicals.
Ion sources
Ion sources
Overcoming N-nitrosamine analysis challenges with mass spectrometry and chromatography solutions
N-nitrosamine analysis has raised significant concerns in the pharmaceutical industry since 2018, when these potential carcinogens were found in several angiotensin II receptor blockers (sartans). Subsequent discoveries in ranitidine and some slow-release metformin medications prompted widespread product recalls. The industry has implemented stricter manufacturing requirements and intensified efforts to evaluate and control N-nitrosamine contamination. To meet stringent regulatory requirements, it is essential to develop effective chromatography and mass spectrometry (MS) methods for N-nitrosamine analysis. This blog addresses the challenges associated with detecting N-nitrosodimethylamine (NDMA) in metformin drug products.
General question on SCIEX 7500
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Easy switching of sources and LC flow regimes on the ZenoTOF 7600 system
This series of videos outlines how a user can easily switch sources and operate the system in different LC flow regimes.
Using Scheduled Ionization to reduce system ion load for proteomics data acquisition
When analyzing highly complex samples from biological matrices, there can be significant amounts of material that elute in the wash cycle of the LC run, depending on the up-front sample preparation used. The Scheduled Ionization mode, available in both SCIEX OS...
Adapting a SCIEX high flow source for microflow LC
To set up a SCIEX high flow source for microflow LC (Turbo V ion source, DuoSpray source or IonDrive Turbo V ion source), first you must replace the wider bore electrodes with more narrow bore hybrid electrodes. Note with the OptiFlow Turbo V ion sources, there are...
Automatic calibration in minutes for microflow LC with the OptiFlow source on ZenoTOF 7600 system
The OptiFlow ion source for the SCIEX ZenoTOF 7600 system is equipped with an ESI calibration probe for automatic calibration during microflow experiments (diagram below). The ESI probe is installed orthogonal to the microflow probe in the OptiFlow source and...
Guidance for source tuning on the OptiFlow Pro ion source
The OptiFlow Pro ion source is the fourth generation of source in the Turbo V ion source family. Fundamental to this family of sources is the orthogonal spray design with V heater configuration, which focuses heat in the optimal spot to achieve high sensitivity...