Physicochemical or geochemical

• Robinson, B., Kim, N., Marchetti, M., Moni, C., Schroeter, L., Van Den Dijssel, C., Milne, G., Clothier, B., (2006), Arsenic hyperaccumulation by aquatic macrophytes in the Taupo Volcanic Zone, New Zealand, Environmental and Experimental Botany, 58, 206-215, 10.1016/j.envexpbot.2005.08.004