About: http://webisa.webdatacommons.org/434919832

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	However, after a period between 5 and 50 minutes, there was a complete removal of the dark color, which occurs faster (5???10???min) when the larger concentrations of Fe2+ were employed.
http://www.w3.org/ns/prov#wasQuotedFrom	hindawi.com