About: http://webisa.webdatacommons.org/44449365

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	Heavy metals such as copper and mercury almost completely inhibit cyanide reaction with ninhydrin, whereas zinc, silver and cadmium are less aggressive.
http://www.w3.org/ns/prov#wasQuotedFrom	scielo.cl