Microcosm Experiments Reveal the Impact of pH Decline on the Marine Arsenic Cycling
To confirm the pH dominantly regulates oxidation and demethylation in marine arsenic metabolism, we performed a controlled incubation using coastal seawater from Xiamen, Fujian. The pH was adjusted to 8.0, 7.5, and 7.0 with an initial addition of 10 ppb As (V).