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浑河沿岸污灌区地下水中PAHs分布特征研究

张跃进 朱书全 肖 汝 王 娟 李发生

张跃进, 朱书全, 肖 汝, 王 娟, 李发生. 浑河沿岸污灌区地下水中PAHs分布特征研究[J]. 环境科学研究, 2007, 20(1): 7-11.
引用本文: 张跃进, 朱书全, 肖 汝, 王 娟, 李发生. 浑河沿岸污灌区地下水中PAHs分布特征研究[J]. 环境科学研究, 2007, 20(1): 7-11.
ZHANG Yue-jin, ZHU Shu-quan, XIAO Ru, WANG Juan, LI Fa-she. Study on Distribution of PAHs in Groundwater in Irrigation Area along the Hunhe River in Liaoning Province[J]. Research of Environmental Sciences, 2007, 20(1): 7-11.
Citation: ZHANG Yue-jin, ZHU Shu-quan, XIAO Ru, WANG Juan, LI Fa-she. Study on Distribution of PAHs in Groundwater in Irrigation Area along the Hunhe River in Liaoning Province[J]. Research of Environmental Sciences, 2007, 20(1): 7-11.

浑河沿岸污灌区地下水中PAHs分布特征研究

基金项目: 国家重点基础研究发展计划(973)项目(2004CB418501)

Study on Distribution of PAHs in Groundwater in Irrigation Area along the Hunhe River in Liaoning Province

  • 摘要: 在浑河沿岸沈抚、浑蒲污灌区采集23个地下水样,采用固相萃取-气相色谱/氢火焰检测器(SPE-GC/FID)方法,对美国环境保护局(USEPA)优先控制的16种多环芳烃(PAHs)进行定量分析.结果表明,该区域地下水受到PAHs严重污染,苯并[a]蒽(BaA)、苯并[k]荧蒽(BkF)检出率分别为100%和82.6%.土壤剖面研究结果表明,BaA和BkF在土壤中的垂直分布比较均匀,显示其在土壤中具有很强的迁移能力.研究发现其原因在于BaA和BkF的沉积物-水分配系数(Koc)较大,其对数值lg Koc分别为5.30和5.74,在土壤-地下水粗分散系统中,容易吸附于大颗粒胶体有机质上,形成悬浮液、乳浊液或者泡沫等,并在布朗运动力推动之下发生迁移.

     

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  • 刊出日期:  2007-02-25

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