干旱区生态环境知识资源中心(Arid): 多环芳烃菲在不同土壤及其组分中的吸附特征研究

Arid

	多环芳烃菲在不同土壤及其组分中的吸附特征研究
其他题名	Adsorption Characteristics of Polycyclic Aromatic Hydrocarbon Phenanthrene on Typical Soils and Their Components
	许端平 1; 陈洪 1; 曹云者 2; 谷庆宝 2; 王宛华 2; 李发生 2
来源期刊	农业环境科学学报
ISSN	1672-2043
出版年	2005
卷号	24 期号:4 页码:625-629
中文摘要	选择江西红壤、北京潮土、黑龙江黑土、新疆灰漠土及从这些土壤样品中提取的胡敏酸与矿物质为吸附剂,研究其对多环芳烃菲的吸附,并对这些胡敏酸及矿物质进行了红外光谱分析.结果表明,吸附等温线经拟合后均符合Freundlich模型,说明这些吸附属多种吸附点同时作用,每种吸附位点表现不同的吸附自由能及位点总剩余度.在试验条件下,几种土壤对菲的吸附能力大小排序为:黑龙江黑土＞江西红壤＞新疆灰漠土＞北京潮土,吸附能力与土壤有机质含量成正相关关系;不同来源胡敏酸吸附能力不同,其大小排序为:灰漠土胡敏酸＞潮土胡敏酸＞红壤胡敏酸＞黑土胡敏酸,吸附能力可能与其中某些基团的含量不同有关,也有可能与胡敏酸的骨架有关,如骨架中的苯环可能会与菲中的平面苯环pi电子重迭而形成共轭:土壤矿物质吸附能力大小顺序为:红壤矿物质＞黑土矿物质＞潮土矿物质＞灰漠土矿物质.经红外谱图分析,江西红壤矿物质为高岭石型,北京潮土、黑龙江黑土及新疆灰漠土矿物质属蒙脱土型,说明高岭石型土壤矿物质吸附能力大于蒙脱土型土壤矿物质.
英文摘要	A Test with four kinds of typical soils in China, humic acids (HAs) and mineral components isolated from the soil sam-ples were chosen lo adsorb phctianthrenc from water. The soils were krusnozem collected from Jiangxi, fluvo-aquic soil collected from Beijing, phaoozem collected from lleilongjiang and grey desert soil collected from Xinjiang, respectively. The humic acids and mineral were analyzed using Fourier transform infrared spectroscopy (FTIR). Under the experiment condition, all the isotherms (inform I’Yeundlich model, which means that the adsorption may be caused by recombination action of many kinds of adsorption points, every point has different free energy and total redundancy. The non-linearity of isotherms suggests that the ad-sorption of phenauthrone on HAs may lake place on the condensed domains. The adsorption capacities of soil samples are corre-lated wilh the contents of soil organic matter (SOM); humic acids from different soils change in adsmption amount, which may be caused by the contents of Home groups that constitute the macromolecules. On the other hand, it may be caused by the overlap of ir-eleclroiiH in the aromatic structure of HAs and the planar aromatic rings of PAH molecules. The adsorption amount of phenan-threne on mineral components from krasnozem is the largest and that from phaeozem is smaller while that from grey desert soil is the smallest. From FTIR spectra, the result can be reached that mineral components from krasnozem are mainly kaolinites while those from fluvo-aquic soil, phaeozem and grey desert soil are mainly montmorillonites, which means that the adsorption capacity of kaolinites is larger than lhat of montmorillonites.
中文关键词	土壤 ; 胡敏酸 ; 多环芳烃 ; 菲 ; 吸附 ; 红外光谱
英文关键词	soil humic acids PAHs phenanthrene adsorption FTIR
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:2015578
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206477
作者单位	1.(北京)中国矿业大学(北京校区)化学与环境工程学院, 北京 100083, 中国; 2.中国环境科学研究院, 北京 100012, 中国
推荐引用方式 GB/T 7714	许端平,陈洪,曹云者,等. 多环芳烃菲在不同土壤及其组分中的吸附特征研究[J],2005,24(4):625-629.
APA	许端平,陈洪,曹云者,谷庆宝,王宛华,&李发生.(2005).多环芳烃菲在不同土壤及其组分中的吸附特征研究.农业环境科学学报,24(4),625-629.
MLA	许端平,et al."多环芳烃菲在不同土壤及其组分中的吸附特征研究".农业环境科学学报 24.4(2005):625-629.