About: http://webisa.webdatacommons.org/80796202

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, the oxidizers and heavy metal ions, such as Hg, Cu, Ag may interfere with the determinations.
http://www.w3.org/ns/prov#wasQuotedFrom	scielo.cl