土壤无机矿物对抗生素的吸附机理研究进展

摘要

Antibiotics have been widely introduced into the environment.Their sorption/desorption behaviors control their transport,transformation and fate in the environment.Both soil organic matter and inorganic mineral have strong sorption to antibiotics.In this review,sorption mechanisms of antibiotic in inorganic minerals were focused on.The surface properties and structures of mineral（such as S—OH and 2∶1 and 1∶1）and the types of functional groups（such as —OH,—CHO,and — COOH）were highlighted.Ionic exchange and hydrophobic effect play a dominant role in the antibiotic adsorption in inorganic minerals.The effect of pH,ionic strength,and dissolved organic matter in antibiotics sorption were discussed,and viewpoints regarding antibiotics sorption were compared.Future research directions were also discussed.%抗生素作为一类离子型有机污染物被大量引入环境,对动物及人类的潜在危害已经不可忽视。吸附/解吸则主要控制着抗生素的环境迁移、转化与归宿,土壤有机质与无机矿物对抗生素具有同等强吸附能力,本文侧重介绍土壤无机矿物对抗生素的吸附机理,从无机矿物表面特性（如S—OH）和结构组成（如2∶1型、1∶1型）,以及抗生素母体携带官能团的量和种类（如—OH、—CHO、—COOH）等方面来阐述无机矿物对抗生素的吸附机理,认为离子交换与亲水作用对无机矿物吸附抗生素起主导作用。还讨论了环境中pH值、离子强度和溶解有机质对无机矿物吸附抗生素的影响。并比较研究者在观点上异同点,对将来研究方向提几点建议。