Fingerprinting aliphatic hydrocarbon pollutants over agricultural lands surrounding Tehran oil refinery

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• 作者：Javad Bayat ; Seyed Hossein Hashemi…
• 关键词：Aliphatic hydrocarbon pollutants ; Soil pollution ; Agricultural lands ; Source identification
• 刊名：Environmental Monitoring and Assessment
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：188
• 期：11
• 全文大小：1,559 KB
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment
  Monitoring, Environmental Analysis and Environmental Ecotoxicology
  Ecology
  Atmospheric Protection, Air Quality Control and Air Pollution
  Environmental Management
  
• 出版者：Springer Netherlands
• ISSN：1573-2959
• 卷排序：188

文摘

The analysis of aliphatic hydrocarbons, which are composed of n-alkanes as well as branched and cyclic alkanes, can be used to distinguish between the sources of hydrocarbon contamination. In this study, the concentration of aliphatic hydrocarbons, soil pH, and organic matter in agricultural soils located south of Tehran were monitored. Eighty-three soil samples were taken from two depth ranges of 0–30 and 30–60 cm. The results showed that aliphatic compounds ranged from 0.22–68.11 mg kg−1 at the top to 0.33–53.18 mg kg−1 at subsoil. The amount of hydrocarbons increases from the northern parts toward the south, and hydrocarbon pollutants originated from both petroleum and non-petroleum sources. Higher concentrations of aliphatic compounds in the southern parts indicated that, aside from the practice of irrigating with untreated wastewater, leakage from oil refinery storage tanks possibly contributed to soil pollution. The results also showed that several sources have polluted the agricultural soils. It is necessary to develop a new local pollution criterion as a diagnostic index that includes not only hydrocarbons but also other parameters such as heavy metal content in both soil and untreated wastewater, surface runoff, and other irrigation water resources to determine the exact origin of pollution.