PhD student Si Chen study visit to University of Helsinki

The PhD student Teo Kien Yung (University of Tartu) visited KIT to advance understanding of nitrogen cycling in tropical peat soils using fresh Malaysian peat samples. The work focused on comparing analytical methods through soil core ring incubation, MIMS techniques, and 15N isotope labeling. The visit also included methodological exchanges between TROPI and KIT.

Figure: Teo working at KIT. Credit: E. Wangari

The PhD student Teo Kien Yung (University of Tartu) visited KIT to advance understanding of nitrogen cycling in tropical peat soils using fresh Malaysian peat samples collected in July 2025. The work focused on comparing analytical methods through soil core ring incubation, gross nitrification and ammonification measurements, pH and gravimetric analysis, and membrane inlet mass spectrometry (MIMS). Under the guidance of researchers at KIT, Teo gained hands-on experience in 15N isotope labeling, colorimetric analysis, and MIMS techniques, which offer efficient alternatives to conventional IRMS. The visit also included methodological exchanges between TROPI and KIT, discussions on helium-incubation systems for N2 and N2O flux quantification, and participation in seminars to broaden expertise and networking. Most laboratory work was successfully completed, with data analysis and microbial studies continuing at the University of Tartu. In addition to Teo, Assoc Prof. Mikk Espenberg and Dr. Mohit Masta visited KIT, showcasing a strong collaboration between the teams of UT and KIT.