A potential formation route for CHOS compounds in dissolved organic matter

Autor(es)

Melendez-Perez, Jose J. ^[1] ; Martinez-Mejia, Monica J. ^[1] ; Barcellos, Roberto L. ^[2] ; Fetter-Filho, Antonio F. H. ^[3] ; Eberlin, Marcos Nogueira ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Inst Chem, PC 6154, BR-13083970 Campinas, SP - Brazil

^[2] Fed Univ Pernambuco UFPE, Dept Oceanog, BR-50740550 Recife, PE - Brazil

^[3] Fed Univ Santa Catarina UFSC, Dept Geol, BR-88040900 Florianopolis, SC - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MARINE CHEMISTRY; v. 202, p. 67-72, MAY 20 2018.
• Citações Web of Science: 2

Resumo

Sulfur polyoxygenated organic compounds (CHOS compounds) had been detected in dissolved organic matter (DOM) from several aquatic systems around the world but the knowledge of its origin and geochemical behavior is still scarce. Previous studies have reported correlations between the content of CHOS compounds in DOM and the sulfide concentration in aquatic systems. We therefore performed a set of laboratorial experiments aiming to better understand the role of DOM in the sulfur cycle and we found that CHOS compounds can be formed in aquatic systems by the addition of sulfide/bisulfide ions to lignin-like CHO compounds. We also show that sediments act as heterogeneous catalysts that facilitate the formation of CHOS compounds. (AU)

• Processo FAPESP: 13/15644-0 - Emprego de técnicas de espectrometria de massas de ultra alta resolução e exatidão em orgânica marinha: caracterização da matéria orgânica dissolvida no sistema Estuarino-Lagunar de Cananéia-Iguape e comparação com outros ambientes do estado de São Paulo
• Beneficiário: Jose Javier Melendez Perez
• Modalidade de apoio: Bolsas no Brasil - Doutorado