Muhammed Yousuf S

4 Questions 1 Answers 0 Followers

Questions related from Muhammed Yousuf S

How to Perform Derivatization of Organic Compounds When Loading Samples on an Empty Glass Tube in TD-GC/MS?

I am working with thermal desorption gas chromatography-mass spectrometry (TD-GC/MS) and need to derivatize organic compounds before analysis. However, I am unsure about the best approach for...

10 March 2025 7,285 1 View

GC-MS calibrated for 16 EPA PAHs. Last 3 compounds show poor linearity. Response decreases. How to improve?

I have calibrated my GC-MS for 16 EPA PAHs using available methods. However, the last three compounds (Indeno[1,2,3-c,d]pyrene, Dibenzo[a,h]anthracene, and Benzo[g,h,i,]perylene) are not showing...

14 May 2024 5,056 2 View

How to Convert µg/mL standards to ng/m³ for PAH analysis in air via GC-MS?

Researchers typically use micrograms per milliliter (µg/mL) standards to calibrate gas chromatography-mass spectrometry (GC-MS) instruments for the analysis of polycyclic aromatic hydrocarbons...

13 May 2024 6,331 5 View

How can we ensure all sample concentrations fall within the calibration range in GC-MS? What guidelines help to get the correct range of standards?

Is there a rule for ensuring that all sample concentrations fall within the calibration range when using GC-MS? Specifically, how can we determine the appropriate calibration range of standards to...

01 January 1970 2,237 2 View