T MATERIAL MAINLAND BASED ON THE COMPOSITION OF LIGNIN PHENOLS IN COASTAL WATER OF THE SPERMONDE ARCHIPELAGO, INDONESIA

Measurements of lignin-phenols monomers from mainland effluents are used to tracing riverine inputs and diagenesis processes of terrigenous dissolved organic carbon (DOC) to the riverine. The purpose of this study is to analyze the transport of mainland material on the west coast of South Sulawesi based on lignin phenols monomer composition, and bulk elemental (rasio C/N and stable isotope carbon values,  13C) on dissolved organic carbon material. Sea water samples were collected in October 2017 (dry season) and March 2018 (rainy season), from coastal waters of Tallo-Makassar river estuary and Pangkep. The monomer composition of lignin phenols () in the rainy season is higher (2.15-3.14) than in the dry season (1.02-1.63).  values (the sum of six lignin phenols, expresses as mg/100 mg organic carbon (OC) ranged from 0.050 to 0.142 in the dry season, and 0.417 to 0.491. Ratios of syringyl/vanillyl (S/V) and cinnamyl/vanillyl (C/V) ranged from 0.02 to 1.95 and 0.02 to 4.32, respectively. It is indicating the presence of non-woody angiosperm tissues. The high vanillic acid to vanillin (Ad/Al)v (0.02-0.87) and syringic acid to syringaldehyde (Ad/Al)s (0.01-0.54) ratios indicate highly degraded lignin materials.