某工业泄漏场地中苯胺与土壤及地下水的相互作用。
Interactions of aniline with soil and groundwater at an industrial spill site.
作者信息
Kosson D S, Byrne S V
机构信息
Department of Chemical and Biochemical Engineering, Rutgers University, Piscataway, New Jersey, USA.
出版信息
Environ Health Perspect. 1995 Jun;103 Suppl 5(Suppl 5):71-3. doi: 10.1289/ehp.95103s471.
The interactions of aniline with soil at an industrial spill site were investigated. Sorption of aniline to the soil was observed to occur through a two-step mechanism. The first step was an ion exchange process with the protonated amine serving as an organic cation. This step was influenced by solution pH and ionic composition. The second step was covalent bonding most likely with quinone moieties and oxidation with polymerization of aniline. The extent of covalent bonding was influenced by the presence of oxygen and redox potential. The majority of aniline that was bound to the soil did not readily desorb under a variety of abiotic conditions. However, aniline was released to a significant extent in the presence of denitrifying and methanogenic microbial activity. Aniline in aqueous solution was readily biodegradable under aerobic and denitrifying conditions. Soil-bound aniline was observed not to be biodegradable. This paper provides an overview of results.
对某工业泄漏场地中苯胺与土壤的相互作用进行了研究。观察到苯胺在土壤上的吸附通过两步机制发生。第一步是离子交换过程，质子化胺作为有机阳离子。这一步受溶液pH值和离子组成的影响。第二步是最有可能与醌部分形成共价键以及苯胺的氧化聚合。共价键的程度受氧的存在和氧化还原电位的影响。与土壤结合的大部分苯胺在各种非生物条件下不易解吸。然而，在反硝化和产甲烷微生物活动存在的情况下，苯胺会大量释放。水溶液中的苯胺在好氧和反硝化条件下易于生物降解。观察到与土壤结合的苯胺不可生物降解。本文概述了研究结果。
Zotero 插件