... free metal ion, inorganic complexed metal and some weak organic complexed metals. Although the relationship between the free ion, [M2+], and [M'] can be determined for inorganic ion pairs ... of dissolved and labile Zn, DOC, UV absorbance and SUVA Dissolved organic carbon concentration was measured as non-purgeable organic carbon with a TOC analyzer (TOC-VCSH, Shimadzu, Japan). ... natural organic matter from different surface waters, Journal of Environmental Management, 80, 222-229. Ma H., Allen H. E. and Yin Y. (2001). Characterization of isolated fractions of dissolved organic...