Overlying water fluoride concentrations influence dissolved organic matter composition and migration from pore water in sediment via bacterial mechanisms.

ABSTRACT: Fluoride (F^-) is widespread in aquatic environments; however, it is not clear whether the fluctuation of F^- concentrations in overlying lake water affects the composition and migration of dissolved organic matter (DOM) from sediment. A case study was presented in Sand Lake, China, and an experiment was conducted to analyze the influence of different F^- concentrations in overlying water on DOM characteristics. Diffusion resulted in similarities in DOM components between overlying and pore waters, and bacterial activities and enzyme variation resulted in differences between them. Higher F^- concentrations in overlying water resulted in a higher pH of pore water, which favored the enrichment of protein-like substances. Higher F^- concentrat

SUBMITTER: Zhu X 

PROVIDER: S-EPMC9488004 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature