K. Furukawa¹⁾, Y. Maruyama²⁾, T. Kimura²⁾, M. Abe³⁾, S. Watanabe³⁾
1) Center for Instrumental Analysis, Institute for Research Promotion, Niigata University, 2) Graduate School of Science and Technology, Niigata University, 3) Faculty of Science, Niigata University