About: http://webisa.webdatacommons.org/66590368

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	Emphasis is on impurities, by-products, contaminants and other artifacts.
http://www.w3.org/ns/prov#wasQuotedFrom	elsevier.com