Characterization of Water-soluble Organoarsenic Compounds in Marine Sponges Yukiho Yamaoka1*, Marvelisa L. Carmona2, Jose M. Oclarit2, Kazuo Jin3 and Yasuyuki Shibata4 Characterization of Water-soluble Organoarsenic Compounds in Marine Sponges Yuk. APPLIED ORGANOMETALLIC CHEMISTRY. 2006. 20. 545-548