Definition: A plot of ion current vs. retention time obtained from a chromatography experiment with mass detection. The base peak intensity chromatogram represents the intensity of the most intense ...

After the last peak is recorded, switch the knob back to the LOAD position and remove the syringe. Watch the video: Caffeine Analysis Using HPLC. Choose from the following chromatograms to complete ...

This time it will be a shooting star show. The Lyrid meteor shower will peak in 2024 starting late Sunday night on April 21 and last through dawn on Monday April 22. The Lyrids, one of the oldest ...

In elution chromatography, the peak maximum would obviously have to stay below the concentration limit, and thus the average concentration of the peak volume would be quite low. However ...

Typical chromatogram of pantoprazole oral liquid stored at 2-8 °C. Peak 1 = pantoprazole (15 µg/mL), peak 2 = ethylparaben internal standard (20 µg/ml). Chromatograms of pantoprazole after ...

I am a chemical engineer covering the energy sector. Following my previous article -- Peak Demand? No, A New Gasoline Demand Record-- I received some interesting feedback from readers. It quickly ...

Sometimes a scientist needs to figure out what is in a certain mixture of substances. One way they can do this is to use a process called chromatography. In the activity below, you can try ...

Chromatography is a technique used to separate soluble substances that have been mixed together. It’s normally used to separate coloured mixtures, like food colourings. We are going to use ...

The GC-MS experiment of extracts from hops is attached. However, comparison of our GC-MS chromatograms with ones in the literature shows many missing peaks due to issues in instrument sensitivity. In ...

The alkane calibration mixture, when run by GC, produced a chromatogram with regular peaks correlating with each respective component. The retention time indices for the four specific hydrocarbons ...