PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • INTRODUCTION As a result of growing industrial activity, many chemicals such as heavy metals, organic compounds and synthetic materials pose serious environmental contamination problems, resulting in ecosystem deterioration.1,2 Chromium is considered a heavy metal and a cause of wastewater treatment problems.
http://www.w3.org/ns/prov#wasQuotedFrom
  • scielo.br