Understanding the response factors of a GC detector
Defines the key response parameters of a GC detector, dynamic range, minimum detectable sensitivity, linear range, and response, plus the noise types that affect them.
Gas Chromatography
Browse all Gas Chromatography articles, guides, and protocols.
Selecting a suitable detector for Gas Chromatographic analysis
Gas Chromatography offers a wide range of detectors to meet your analysis. This article will help you decide the right detector for Gas Chromatographic analysis.
Influence of changes in operational conditions on Gas Chromatograms
Covers how fluctuations in gas chromatography operating conditions can cause unexpected peaks, retention time shifts, or peak shape distortions.
Improve reproducibility of syringe injections for GC analysis
Tips for improving reproducibility of manual syringe injections in gas chromatography, covering syringe selection and technique for better precision.
Simple steps to minimize Column bleed from GC columns
Explains what causes GC column bleed, thermal breakdown of the stationary phase near its temperature limit, and steps like conditioning and oxygen traps to minimize it.
Sampling of Gases for analysis by Gas Chromatography
Explains spot, continuous, and grab sampling methods, including evacuated bulbs and gas-tight bags, for collecting gas samples for GC analysis.
Benefits offered by automated injection in Gas Chromatography
Compares manual syringe injection with autosamplers and gas sampling valves in gas chromatography, highlighting reproducibility and unattended operation.
How to minimize retention time drifts in Gas Chromatography?
Explains what causes retention time drift in gas chromatography, including carrier gas flow changes, leaks, and stationary phase damage.
Tips on improving accuracy and precision of Gas Chromatographic injections
Offers practical tips for consistent manual syringe technique in GC injections, covering inspection, temperature equilibration, rinsing, and timing to improve accuracy.
Certificate Course on Gas Chromatography now available!
Announces Lab Training's self-paced online certificate course on Gas Chromatography, following its HPLC and AAS courses, with registration details.
Troubleshooting Tips for Gas Chromatographic Syringe
Covers corrective actions for the most common GC syringe problems, blockage, bent or broken needles and plungers, and trapped air bubbles, to restore accurate injection.
Recommendations for switching from Gas cylinders to Laboratory gas generators
Compares laboratory gas generators to rented gas cylinders for supplying GC carrier gases, weighing cost, convenience, safety, and environmental benefits.
What is Multi- dimensional GC?
Explains how multi-dimensional GC uses two columns, via comprehensive or heart-cutting transfer, to resolve complex mixtures a single column cannot separate.
How to prevent damage to Capillary GC columns
Covers the causes of capillary GC column damage, breakage, heat, oxygen exposure, chemical attack, and contamination, and how to prevent and reverse each.
Benefits of Automated replacement of GC liners
Explains how automated liner exchange systems replace contaminated GC injector liners mid-sequence, saving time versus manual cleaning or replacement.
Types of Liners and their Selection
Explains how GC inlet liner design, packed, unpacked, or baffled, should be matched to split, splitless, direct, or PTV injection techniques for reliable sample transfer.
Sample Injection Techniques for Capillary Column Gas Chromatography
Compares splitless, split, direct, and on-column injection techniques for capillary GC, explaining how each affects sample transfer, sensitivity, and peak shape.
Minimization of influence of random fluctuations in operating conditions in GC analysis
Covers causes of random fluctuations in GC operating conditions, from gas quality and leaks to injection reproducibility and temperature drift.
Why very long capillary GC columns are not preferred?
Explains why capillary GC columns are typically kept within 15 to 60 meters, since longer columns bring diminishing gains alongside cost and bleed.
Sample Injection Practices in Gas Chromatography
The accuracy and precision of your results will largely depend on reproducibility of injection volumes. Read more about Injection Practices in Gas Chromatography.
How Gas Chromatography can contribute to your career prospects?
Gas chromatography is an established and popular technique used for separation of components of a mixture of gases or liquids and help quantify them.
Gas Chromatographic response
A chromatographic detector serves to identify and quantify the sample components as they reach it in a sequence after separation in the chromatographic column.
chromatographic calculations
A typical chromatogram comprises of several peaks varying in size. The height of each peak is in proportion to the amount of the particular component present in the sample mixture injected into the chromatograph.
Importance of Colour Coding for Gas Cylinders in Laboratories
It is important for all laboratories to prominently display colour code charts in workplace, in gas storage space so as to familiarise the workers with hazards of gases.