| DOM对被动采样技术的影响与应用 |
| 摘要点击 1579 全文点击 817 投稿时间：2015-01-30 修订日期：2015-03-19 |
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| 中文关键词 多环芳烃 邻苯二甲酸酯 溶解性有机物 被动采样 风险评价 |
| 英文关键词 PAHs PAEs dissolved organic matter passive sampling risk assessment |
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| 中文摘要 |
| 主要研究了不同浓度的天然溶解性有机物(DOM)对单片膜被动采样技术的影响. 结果表明,DOM的存在会影响膜吸附有机污染物的能力:当lgKOW为3~5时,DOM对膜吸附有机物的影响较小; 当lgKOW>5.5时,DOM会显著增强膜的吸附能力. 同时,通过低密度聚乙烯膜(LDPE)被动采样技术对太子河流域3个表层沉积物的孔隙水进行多环芳烃类(PAHs)和邻苯二甲酸酯类(PAEs)监测. 结果表明,所选取的几种目标污染物在各监测点均有不同程度的检出. 最后,利用商值法对太子河流域的PAHs和PAEs进行生态风险评价. 结果表明,荧蒽超过水生生态基准值,其生态风险较大. |
| 英文摘要 |
| This paper studied the effects of different concentrations of natural dissolved organic matter (DOM) on the passive sampling technique. The results showed that the presence of DOM affected the organic pollutant adsorption ability of the membrane. For lgKOW 3-5, DOM had less impact on the adsorption of organic matter by the membrane; for lgKOW>5.5, DOM significantly increased the adsorption capacity of the membrane. Meanwhile, LDPE passive sampling technique was applied to monitor PAHs and PAEs in pore water of three surface sediments in Taizi River. All of the target pollutants were detected in varying degrees at each sampling point. Finally, the quotient method was used to assess the ecological risks of PAHs and PAEs. The results showed that fluoranthene exceeded the reference value of the aquatic ecosystem, meaning there was a big ecological risk. |
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