期刊论文

Review of Researches on Bioavailability of Ionizable Organic Compounds in Environment

Liu, K.-L.

中文

生态与农村环境学报

1673-4831

2017

33

5

385-395

10.11934/j.issn.1673-4831.2017.05.001

41301568:国家自然科学基金 XCX1587:湖南农业大学大学生创新性实验计划

本校为第一且通讯机构

随着人工合成化合物的增加,可电离有机化合物（ionizable organic compounds,IOCs）所占比例越来越大。由于IOCs在环境pH范围内可能以分子或离子形式存在,其在环境中的生物有效性具有特殊性。主要从物理化学吸附和生物对IOCs的吸收2个过程综述环境中IOCs生物有效性的影响因素,环境介质吸附IOCs主要受环境pH的影响,通常中性分子比离子态分子更易被环境吸附。IOCs对生物的有效性主要取决于IOCs在环境中的电离程度和生物对其富集因子。根据离子障理论,中性分子相比于离子态分子更容易穿透细胞膜,一旦化合物进入生物膜内,IOCs是否具有生物有效性取决于细胞质内pH,细胞内部影响浓度与外界环境pH无关。...

With the development of the chemical industry, an increasing proportion of synthetic organic compounds detected today in the environment are ionizable. As ionizable organic compounds (IOCs) may exist in the form of molecules and/or ions in the environment, their bioavailabilities in the environment are site-specific. Factors affecting IOCs bioavailabilities in the environment mainly from the angle of their physicochemical adsorption and biological absorption are elaborated. IOCs adsorption to environmental media is mainly influenced by pH. Gene...