About: http://webisa.webdatacommons.org/60315503

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	This is necessary because the nitric acid is a strong oxidizing agent and will inhibit the reduction and precipitation of metallic gold upon addition of the reducing agent.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com