Determination of point of zero charge of natural organic materials Bakatula, Elisee Nsimba ; Richard, Dominique ; Neculita, Carmen Mihaela ; Zagury, Gerald J. Abstract Publication: Environmental Science and Pollution Research Pub Date: March 2018 DOI: 10.1007/s11356-017-1115-7 Bibcode: 2018ESPR...25.7823B