About: http://webisa.webdatacommons.org/86241903

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	Three main obstacles are encountered: Firstly, in the apolar fraction, compounds such as waxes and alcohols show strong fragmentation, and no molecular ion is detected in GC???EI-MS making unequivocal identification difficult.
http://www.w3.org/ns/prov#wasQuotedFrom	spectroscopyonline.com