WebGas chromatography-mass spectroscopy (GC-MS) is one of the so-called hyphenated analytical techniques. As the name implies, it is actually two techniques that are … Webghost peaks contamination baseline Related Ghost peaks and sudden baseline shifts karrun over 2 years ago 5975C MSD and 7890 GC. I am fairly new to GC-MS and am …
Source of Ghost and Carryover Peaks in GC - Articles - GC …
WebGC-MS conditions are used, mass spectral databases can be utilized to identify the compound from inspection of the mass spectrum.[6, 7] ... Peaks for the molecular/parent ion (m/z = 46) and the fragmentation ions (also listed … WebNov 10, 2024 · Peak splitting is when a single compound is shown in the chromatogram as two peaks usually unresolved, or one of the peaks is a shoulder. Other chromatographic problems are identified in Basic Troubleshooting for GC Systems . Regular maintenance of your instrument in accordance with the recommended maintenance schedule will reduce … shepherd house newent
Troubleshooting Chromatographic Contamination …
WebMay 17, 2024 · - masking the analyte peaks and/or appearing as ghost peaks in the chromatogram - making the baseline noisy - fouling the system and the column, requiring frequent maintenance and replacement of parts. To minimize contamination: - High-purity solvents, water and reagents should be used for the preparation of mobile phases. WebJul 29, 2012 · Identify the primary ion of these interfering peaks (i guess 207 or 281 m/z) and if your analyte has a lower mass simply put the upper limit at 200 m/z. If your analyte has higher mass we'll think about it. Davide Balbo from Italy. Re: Mysterious ghost peaks with Varian GCMS. tans. WebJul 10, 2012 · Typical GC–MS chromatograms obtained using Septum A (sans sample injection) at increasing IP temperatures 100, 150, 200 and 250°C are shown in Figure 3. … spreegas lauchhammer