LC-MS Analysis of Low Molecular Weight Carbonyl Compounds as 2,4-Dinitrophenylhydrazones Using Negative Ion Mode Electronspray Ionization Mass Spectrometry

Akio Yasuhara¹, Yuuka Tanaka¹, Miyuki Makishima², Shigeru Suzuki² and Takayuki Shibamoto^3*

¹Environmental Safety Center, Tokyo University of Science, 12-1 Funagawara-machi, Ichigaya, Shinjuku, Tokyo 162-0826, Japan, E-mail: tshibamoto@ucdavis.edu

²National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan, E-mail: tshibamoto@ucdavis.edu

³Department of Environmental Toxicology, University of California, Davis, California 95616, USA, E-mail: tshibamoto@ucdavis.edu

^*Corresponding Author: Takayuki Shibamoto, Department of Environmental Toxicology, University of California, Davis, California 95616, USA, Tel: 530 752- 4523, Fax: 530 752-3394 Email: