Portable GC with photoionization detection for hexanal analysis in animal feed
A portable gas chromatograph using carbon dioxide as a carrier gas and photoionization detection (PID) is being developed for detecting hexanal in animal feed. This robust instrument aims to optimize sample introduction and rapid separation of hexanal for accurate analysis.
Overview
This project focuses on developing a portable gas chromatograph (GC) with photoionization detection (PID) for the headspace analysis of hexanal in animal feed. Hexanal is an important indicator of spoilage in food products, and its accurate detection is crucial for quality control in the feed industry. This innovative instrument uses carbon dioxide as a carrier gas, enhancing its portability and flexibility, making it suitable for field applications.
Technical specifications
The GC system is designed to offer robust performance with excellent detectability of carbonyl compounds due to the reliability of PID. A Soda Stream CO2 cylinder is interfaced with a commercial GC instrument, enabling portability. The system employs a 30 m cyanopropyl phenylmethyl polysiloxane capillary column known for favorable interactions with carbonyl compounds, facilitating rapid isothermal separation at 100 °C. A digital temperature programmable magnetic stirring hotplate is used for static headspace analysis, while dynamic headspace methods such as purge and trap are explored for sample preparation. Optimization efforts focus on headspace method development and rapid GC separation of hexanal from the internal standard, isobutyl butyrate, with attention to analytical figures of merit like limit of quantification, linearity, and reproducibility.
Technology readiness level
The technology is at a readiness level of 2, indicating that the basic principles have been observed and reported, and further research is underway to optimize the system for practical application and validation in real-world scenarios.
About Miami University, Ohio
Miami University is a comprehensive public research university in Oxford, Ohio, known for a strong undergraduate focus alongside applied, collaborative research. Industry engagement centers on co-ops and internships, industry-sponsored capstone design, and open maker and prototyping spaces that support rapid iteration with faculty and student teams. Proximity to Cincinnati and Dayton puts partners near Fortune 500 headquarters, advanced manufacturing suppliers, and a dense logistics network, enabling frequent site visits and efficient scale-up. Research is supported by competitive federal and state funding, including awards from the National Science Foundation and the National Institutes of Health. A dedicated technology transfer office supports IP, licensing, and startup formation, linking companies to regional commercialization resources.
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