As the name implies, GC uses a carrier gas in the separation, this plays the part of the mobile phase (Figure 1 (1)). The carrier gas transports the sample molecules through the GC system, ideally ...

LCGC International spoke to Phil Marriott and Humberto Bizzo about a recent paper they published identifying the incorrect use of retention indices in gas chromatography and how this problem can be ...

Inverse gas chromatography, also known as IGC, is a gas phase technique that was developed over forty years ago to inspect the bulk and surface properties of fibrous and particulate materials. Until ...

Steps to Calculate Retention Time: 1. Prepare your chromatographic system: Set up your HPLC (High-Performance Liquid Chromatography) or GC (Gas Chromatography) apparatus according to your experimental ...

While PFAS were detected in nearly every sample, only two samples were above the EPA guidelines at the time for PFOA and PFOS. If the new proposed limits were law back then, 27 water systems, or ...

Summary Gas chromatography is a chromatographic method that uses gas as a mobile phase. The sample flows through the gas system and is gasified before finally entering a chromatographic column filled ...

The Orbitrap GC-MS used in this study adopts the full scan mode, which simplifies the optimization of gas chromatography-mass spectrometry parameters, saves the sample preparation time of the ...

The 2-ketones (C4-C9) were used to calculate the retention index (RI) of the volatile compounds as an external reference. The volatile compounds were identified by comparing their RI values using the ...

Solid adsorbent gas chromatography (GC) columns, such as porous layer open tubular (PLOT) columns, are the best option for GC analysis of C1–C5 hydrocarbons, but water can affect retention and ...