科研之友
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摘要
Polycyclic aromatic hydrocarbons occur in an environment as organic mixtures resulting from anthropogenic and natural pyrolysis of organic compounds during fossil fuel utilization, forest fires and chemical manufacture. Several of them have been classify as human carcinogens. According to effects of these compounds on human health, this study is necessary in Iraq. In this study, sixteen polycyclic aromatic hydrocarbons 2-6 fused aromatic rings determined and compared. Water samples from fourteen sites taken monthly. The variations for the concentrations of sixteen polycyclic aromatic hydrocarbons in surface water monitored for one year. Study starts from November 2011 to October 2012. The analysis performed by HPLC technique with UV-visible detector. Selected samples taken from fourteen sites on the both banks of the Shatt Al-Hilla river. Extraction method in this survey was done by solid phase extraction. The results showed high variations in concentrations of polycyclic aromatic hydrocarbons compound from site to site and from month to month depending on human activities per site and month. Benzo[a] pyrene was the highest concentration reaching (601.81) ppb in site six in November 2011. The summation of all polycyclic aromatic hydrocarbons samples for fourteen sites during twelve months were 13115.52 ppb. Among all these compounds, Fluorene recorded the maximum cumulative value of 1690.608 ppb, where as the minimum value amongst all polycyclic aromatic hydrocarbons compounds on cumulative term was for acenaphthene, which was 300.102 ppb.
- 出版日期2014-5
