Physicochemical or geochemical

• Durand, M., Florkowski, C., George, P., Walmsley, T., Weinstein, P., Cole, J., (2004), Elevated trace element output in urine following acute volcanic gas exposure, Journal of Volcanology and Geothermal Research, 134(1-2), 139-148, 10.1016/j.jvolgeores.2004.01.007