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首页> 外文期刊>Journal of Environmental Science and Health >Occurrence and distribution of polycyclic aromatic hydrocarbons in the Egyptian aquatic environment
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Occurrence and distribution of polycyclic aromatic hydrocarbons in the Egyptian aquatic environment

机译：埃及水生环境中多环芳烃的发生与分布

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摘要

Persistent organic pollutants (POPs) such as polycyclic aromatic hydrocarbons (PAHs) are of great concern due to their persistence, bioaccumulation and toxic effects. In this study, water samples were collected during 2007-2008 from two catchment areas that represent two different models of the aquatic environment in Egypt (Rosetta branch as fresh water and El-Moheet drain as untreated/treated waste water). The distribution of 16 PAHs included in the US Environmental Protection Agency's (EPA) priority pollutant list was analyzed by gas chromatography/mass spectrometry (GC/MS). Total PAH concentrations varied from 242 to 732 ng/L in fresh water from the Rosetta branch with a mean value of 408 ng/L; and for waste water the concentrations were in the range 894 to 1979 ng/L with a mean value of 1476 ng/L. The PAH profiles were dominated by low molecular weight PAHs (two- and three-ring components) in all collected water samples. The origin of PAHs in both waste water and fresh water in these study areas may be from oil or sewage contamination. The total PAHs concentrations of untreated waste water decreased along the treatment process by about 30% at the Zenein waste water treatment plant. The levels of PAHs in waste water are relatively high, although lower than locations with known problems.
机译：持久性有机污染物（POPs），例如多环芳烃（PAHs），由于其持久性，生物蓄积性和毒性作用而备受关注。在这项研究中，在2007年至2008年期间从代表两个水生环境的两个集水区收集了水样（Rosetta分支为淡水，El-Moheet排水为未处理/处理过的废水）。通过气相色谱/质谱（GC / MS）分析了美国环境保护署（EPA）优先污染物清单中包括的16种多环芳烃的分布。罗塞塔支流淡水中的PAH总浓度从242到732 ng / L不等，平均值为408 ng / L。对于废水，浓度范围为894至1979 ng / L，平均值为1476 ng / L。在所有收集的水样中，PAH谱以低分子量PAH（二环和三环组分）为主。在这些研究区域，废水和淡水中的PAHs可能来自石油或污水污染。在Zenein废水处理厂，未处理废水的总PAHs浓度在处理过程中降低了约30％。废水中的PAHs含量相对较高，尽管低于存在已知问题的位置。

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