Complex mixture quantification without calibration using gas chromatography and a comprehensive carbon reactor in...

Area of Science:

• Analytical Chemistry
• Chemical Engineering

Background:

• Quantifying complex carbon mixtures is challenging due to time-intensive calibration.
• Flame ionization detectors (FID) offer wide linear range but variable response for certain compounds.
• Existing methods require extensive calibration, limiting efficiency.

Purpose of the Study:

• To evaluate a Polyarc microreactor unit for normalizing carbon response in FID analysis.
• To assess the potential for calibration-free quantification of complex mixtures.
• To improve workflow efficiency and throughput in chemical analysis.

Main Methods:

• Utilized a commercial Polyarc microreactor unit placed before a flame ionization detector.
• Investigated the conversion of all carbon atoms to methane for uniform detection.
• Analyzed n-alkane, terpene, and polymer mixtures to validate the system.

Main Results:

• Achieved accurate quantification of complex mixtures without prior calibration.
• Demonstrated the system's capability to analyze samples with complex physical or structural properties.
• Confirmed reliable quantification across a wide concentration range.

Conclusions:

• The methanizer-FID system effectively normalizes carbon response, enabling calibration-free analysis.
• This approach significantly simplifies workflows and increases analytical throughput.
• The technology is suitable for diverse applications involving complex organic mixtures.