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Toho University

2 ARTICLES PUBLISHED IN JoVE

Environment

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on ¹⁴NH₄⁺/¹⁵NH₄⁺ Analyses via Sequential Conversion to N₂O

Megumi Kuroiwa¹, Keitaro Fukushima^2,3, Kazuma Hashimoto², Yukiko Senga⁴, Tsubasa Sato⁴, Chie Katsuyama⁵, Yuichi Suwa¹

¹Department of Biological Sciences, Faculty of Science and Engineering, Chuo University, ²Faculty & Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, ³Center for Ecological Research, Kyoto University, ⁴Department of Chemistry, Faculty of Science, Toho University, ⁵Graduate School of Integrated Arts and Sciences, Hiroshima University

A series of methods to determine the potential DNRA rate based on ¹⁴NH₄⁺/¹⁵NH₄⁺ analyses is provided in detail. NH₄⁺ is converted into N₂O via several steps and analyzed using quadrupole gas chromatography–mass spectrometry.

Chemistry

Design, Synthesis, and Photochemical Properties of Clickable Caged Compounds

Akinobu Z. Suzuki¹, Yukiko Shiraishi¹, Hanami Aoki¹, Hirona Sasaki¹, Rei Watahiki¹, Toshiaki Furuta¹

¹Department of Biomolecular Science, Faculty of Science, Toho University

A protocol for the synthesis and measurement of the photochemical properties of modular caged compounds with clickable moieties is presented.