High School

Select the correct order of the GC components:

A. Column, Recorder, Carrier Gas, Flow Controller, Detector

B. Recorder, Carrier Gas, Column, Detector, Injector port

C. Injector port, Carrier Gas, Detector, Recorder

D. Carrier Gas, Column Oven, Flow Controller, Detector

E. Carrier Gas, Flow Controller, Column, Detector, Recorder

Answer :

Carrier Gas, Flow Controller, Column, Detector, Recorder

First we have a cylinder containing the
carrier gas. From there, the carrier gas goes to the flow controller, which determines
how much carrier gas we are entering into the column (it doesn’t let more gas
pass through). Then, the carrier gas enters the column, which is the most
important part of the device. The sample enters the column from another place:
the injector. Then, the sample and the carrier gas go together across the
column. The interactions between the sample and the column will determine how
fast each sample component goes through the column, and so: which component
gets out earlier. So, at the end, you will have isolated each substance. Then,
each one passes (alone) through the detector, which measures something about
the sample – this information will let you know which substance it is. Finally,
the recorder provides you with the information the detector has found.
Nowadays, the recorder is a computer. In the “stone age” they just used a rudimentary
printer.


The correct order of the GC components is Carrier Gas, Injector port, Column, Detector, Recorder, which follows the sample pathway from injection to detection and recording in gas chromatography.

The correct order of the GC components is:

Carrier Gas

Injector port

Column

Detector

Recorder

In gas chromatography (GC), the sample is injected into a gaseous mobile phase referred to as the carrier gas. This mobile phase carries the sample through the column, which is often located in a column oven. The column's role is to separate the sample's components, which happens due to their varying abilities to partition between the mobile phase and the stationary phase. As the separated components exit the column, they are detected by a detector. Finally, the data is collected and recorded using a recorder.