Dual column analysis of VOCs, haloacetic acids, and phenols using nitrogen carrier gas
1.Introduction
In a previous report, an application was presented that utilizes a dual-column configuration, connecting two types of GC column to MS. This configuration was developed with the objective of enhancing work efficiency. While the dual column connection eliminates the need for column switching, it also increases the carrier gas flow rate, which can lead to a reduction in sensitivity. The use of helium as the carrier gas mitigates this decline, while the employment of alternative gases can result in a substantial reduction in sensitivity.
In this study, we utilized nitrogen as an alternative carrier gas and concurrently connected a column for VOCs and a column for haloacetic acids and phenols. We then proceeded to assess the applicability of this approach in water quality analysis. The evaluation was based on performance indicators such as detection sensitivity, calibration curve linearity, and reproducibility.