Assertion: dissolved arsenic | /r/HasProperty | pentavalent increase
Facets:
value: with increasing ph
type: OTHER
Source sentences:
text: The concentration of arsenic in solution in sediment pore water and the fraction of the total dissolved arsenic that is pentavalent increase with increasing pH, providing further evidence that much of the nondetrital arsenic in the oxidized sediment layers is sorbed as arsenate to iron and manganese oxide surfaces .