There are many detectors that can be utilized in Gas Chromatography; different sensors will provide unique kinds of selectivity. A non-selective detector responds to all substances except that the carrier gas, a selective detector responds to a range of substances with a common chemical or physical characteristic, and a particular sensor reacts to a single chemical compound. All the portable GCs in EQUIPCO’s rental pool are the Selective Detector kind or the Particular Detector type. Gas chromatographs are used in a wide variety of applications such as:

  • Hazardous waste sites
  • Clean-up of spills
  • Protecting workers from toxic vapors
  • Terrorist chemical attacks

How Does a GC Work?

Gas Chromatography involves a sample being vaporized and possibly sample-drawn through an internal pump or injected onto the head of the GC column. The sample is transported through the column from the flow of an inert gas like carbon dioxide or nitrogen. The pillar is generally packed with a finely divided, Inert, strong support material coated with liquid stationary phase. The sample Compounds adhere to the interior walls of this column and since the column is heated The chemicals are released and transported to the detection chamber PID type Sensor in most EQUIPCO GC’s in which the molecules are ionized, causing them to release an electron and form a positive ion. Ions from the sample are pushed in 1 direction by a bias electrode and gathered in a collecting electrode. The ion current is then amplified and converted into digital meter readout in parts-per-billion ppb or parts-per-million ppm. The GC Can identify The particular compound based on the quantity of time that elapsed after the sample Was taken and the heat cycle started, to the sensor responding to a chemical.

The RF of various substances really differ hence the necessity to otherwise figure them out and this Decision should be based on the individual material and what is hplc. Various detectors should also not be used since they will show a different reaction to the same compound. That is why it is important to utilize a particular sensor in Calculation of a specific component in order to enable accurate standards. The RF in HPLC analysis has had a great impact in the making of pharmaceutical Drugs because different medication components and impurities get to be satisfactorily separated.

The process entails monitoring and evaluation of the summit area of each component. To acquire the RRF, one must split the response factor of the impurity by that of the active pharmaceutical ingredient RFimpurity/RFAPI. It follows that the true response factor could be obtained via a quantitative analysis of this API and impurity standard. To get accurate RRF, the slope of this area concentration must be calculated in addition to the impurity standard.