<http://webisa.webdatacommons.org/prov/100645439>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/141426252> .
<http://webisa.webdatacommons.org/prov/426827237>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/141426252> .
<http://webisa.webdatacommons.org/141426252>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<unl.edu> .
<http://webisa.webdatacommons.org/141426252>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/141426252>	<http://www.w3.org/ns/prov#value>	"Hydrogen sulfide concentrations exceeding 6 ppm can be removed by injecting an oxidizing chemical such as household bleach or potassium permanganate to change hydrogen sulfide gas to solid particles of sulfur." .