Dual-line Gas Analysis Using a Nexis GC-2060 Gas Chromatograph with a GI-30 Auto Gas Injector and BID and TCD Detectors

User Benefits

- The Nexis GC-2060 can be equipped with two GI-30 units, enabling automated gas analysis for two sample lines on a single GC. - The combination of TCD and BID detectors enables analysis of a wide range of sample concentrations. - Using the GI-30 auto gas injector enables automated gas-sample introduction with high repeatability.

Introduction

Gas analysis is performed across a wide range of fields, including resource and energy applications and environmental applications. Typical target analytes include inorganic gases such as H₂, N₂, CO, and CO₂, as well as light hydrocarbon gases such as CH₄. Because concentration ranges and matrices vary depending on the sample, detection sensitivity and separation performance must be optimized to meet the measurement objective. Both BID and TCD detectors can detect all compounds except carrier gases (BID cannot detect Ne). The BID is a Shimadzu-developed detector that enables highly sensitive analysis of low-level components at the ppm level and simultaneous analysis of multiple compounds, including H₂. In contrast, the TCD provides stable analysis even at high concentrations on the order of percent, and it also has a short time from startup to analysis readiness. Using both detectors together allows a single GC system to cover a wide concentration range from low to high. This article describes dual-line gas analysis using a Nexis GC-2060 equipped with both a BID and a TCD, combined with automated sample introduction using the GI-30 auto gas injector. By combining a BID and a TCD, samples across a broad concentration range can be measured. In addition, automated introduction of gas samples using the GI-30 improves repeatability in continuous analysis and enhances operational efficiency.

April 7, 2026 GMT