- Excretion of hexachlorobenzene and metabolites in feces in a highly exposed human population. To-Figueras, J., Barrot, C., Sala, M., Otero, R., Silva, M., Ozalla, M.D., Herrero, C., Corbella, J., Grimalt, J., Sunyer, J. Environ. Health Perspect. (2000)