Gas Analysis Using a Brevis GC-2050 Gas Chromatograph with a GI-30 Auto Gas Injector and TCD and BID Detectors

User Benefits

- The updated TCD detector has a shorter stabilization time and is suitable for analyzing high-concentration components. - Shimadzu's unique BID detector can simultaneously analyze principal compounds including H₂ and also detect low-concentration components. - The combination of TCD and BID detectors allows for analyzing a wide range of sample concentrations. - The newly introduced GI-30 automatic gas injector enables automatic and reproducible analysis of gas samples.

Introduction

GC is used to analyze gases in a wide range of fields, such as natural resources/energy and environmental testing. Typical components analyzed include inorganic gases like H₂, CO, and CO₂, and lower hydrocarbons starting with CH₄. When analyzing these components with GC, either the TCD or BID detector can be selected as the detector. Both TCD and BID detectors can detect all compounds except for carrier gases (the BID cannot detect Ne). TCD detectors are characterized by their ability to analyze high-concentration components reliably and its short stabilization time. In contrast, BID detectors are unique detectors, only offered by Shimadzu, that can detect low-concentration components that are difficult to detect with TCD detectors and can simultaneously analyze a variety of compounds including H₂. This article describes using a Brevis GC-2050 system equipped with TCD and BID detectors to analyze gases with a GI-30 automatic gas injector. Using the GI-30, gas samples can be automatically injected into the GC unit, enabling reproducible continuous analysis. In addition, since the GI-30 can be used in conjunction with an AOC-30 series autoinjector or other units, gas samples and liquid samples can be efficiently analyzed with a single GC unit. This article also examines the analysis process flow and reproducibility when using the GI-30.

March 4, 2025 GMT