摘要
用黄河兰州段水体天然颗粒、人工贫有机质颗粒、伊利石、高岭土、针铁矿作为模拟悬浮颗粒物,采用批量平衡法研究了菲在不同成分颗粒物上的吸附行为,探讨了黄河中上游水体悬浮颗粒物的各种成分对疏水性有机污染物吸附的能力与机理。研究认为,菲在天然颗粒物及粘土矿物颗粒表面的吸附等温线为“S”形,能较好地符合Freundlich方程。粒径相同的不同类型颗粒物对菲的吸附能力大小依次为:粘土矿物>人工贫有机质颗粒>针铁矿>天然颗粒物。对于低有机质含量的兰州黄河颗粒物而言,NOM对菲吸附的贡献较低;溶剂化作用可被用来解释菲在天然颗粒及粘土颗粒表面的吸附行为。
Sorption ability and mechanism of different components of suspended solids in Lanzhou section of the Yellow River were studied. Under the experimental condition, the sorption of phenanthrene on suspended particles could be well described by Freudlich equation; sorption ability of various kinds of the particles with the same size differed. The effects of natural organic matter(NOM) on particles with respect to phenanthrene sorption were slighter.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2006年第4期1-3,共3页
Environmental Science & Technology
基金
国家自然科学基金委与黄河水利委员会共同资助的国家重点基金项目<黄河兰州段典型污染物迁移转化规律和承纳水平研究>资助(50239060)
关键词
菲
黄河兰州段
天然颗粒物
粘土矿物
针铁矿
天然有机质
phenanthrene
Lanzhou section of the Yellow River
natural particles
clay goethite
natural organic matter(NOM)
