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中文摘要：
有机污染物进入土壤后,随着其与土壤颗粒接触时间的延长,生物可利用性明显下降,发生老化现象,存在锁定行为.国内外已经广泛开展了与土壤中有机污染物老化相关的研究,但对老化的概念和内涵却没有明确界定,造成了理解上的偏差.基于目前国内外学者对老化的理解和认识,在明确生物可利用性的基础上,阐述了老化的概念及内涵,并对其进行了清晰的界定,同时对国内外现存的相关概念进行了区分.这些探讨将为相关研究的深入开展奠定基础,为土壤中有机污染物的环境化学行为与生物修复研究提供理论支持.
英文摘要：
With the increasing time of contacting with soil particles, organic contaminants decreased their bioavailability apparently, i. e. , sequestrated in soil, and aging happened. Relevant studies were carried out extensively, but the conception and connotation of ＂aging＂ weren＇ t defined clearly, inducing the discrepancy on its understanding. After summarizing the understandings of relevant researchers at home and abroad, and based on our cognition on bioavailability, the conception and meaning of ＂aging＂ for organic contaminants in soil were expounded explicitly, with the other conceptions distinguished, which would be helpful to the studies related, and to those of the environmental chemical behaviors and bioremediation of organic contaminants in soil.
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