CAJ | 학술논문

北京近1／4区域土壤属于潮土，潮土对四环素类抗生素的吸附特性还鲜有报道。采用OECD Guideline 106的方法，研究土霉素在北京地区潮土上的吸附特性。结果表明，土霉素在潮土中的吸附动力学过程符合Elovich方程，土霉素初始浓度会影响吸附速率，2 mg／L时最大，10 mg／L时最小。吸附百分比随着初始浓度的升高，先增大后减小。温度和平均吸附速率呈负相关。实验浓度下，吸附等温线符合线性等温方程和Freundlich方程，吸附是自发的吸热反应。潮土对土霉素的吸附量和粉粒及黏粒含量之和呈正相关。土霉素在潮土中的吸附受初始浓度、温度、土壤性质等因素的影响，深入了解其作用机理，有助于防治土霉素污染，保护土壤安全。
북경근1／4구역토양속우조토，조토대사배소류항생소적흡부특성환선유보도。채용OECD Guideline 106적방법，연구토매소재북경지구조토상적흡부특성。결과표명，토매소재조토중적흡부동역학과정부합Elovich방정，토매소초시농도회영향흡부속솔，2 mg／L시최대，10 mg／L시최소。흡부백분비수착초시농도적승고，선증대후감소。온도화평균흡부속솔정부상관。실험농도하，흡부등온선부합선성등온방정화Freundlich방정，흡부시자발적흡열반응。조토대토매소적흡부량화분립급점립함량지화정정상관。토매소재조토중적흡부수초시농도、온도、토양성질등인소적영향，심입료해기작용궤리，유조우방치토매소오염，보호토양안전。
Nearly 25%of the total area in Beijing is fluvo-aquic soils,whose adsorption characteristics of tetra-cycline antibiotics have not been investigated.This research,with the help of OECD Guideline 106,investiga-ted the absorption characteristics of oxytetracycline in the fluvo-aquic soils in Beijing.Our research found that the adsorption kinetics of oxytetracycline in the fluvo-aquic soils is correspond to Elovich equation.The initial concentration of oxytetracycline will affect the adsorption rate.Absorption rate reaches the maximum when the concentration is 2 mg/L and the minimum when 10 mg/L.For absorption percentage,as initial concentration increases,the adsorption percentage first increases and then decreases.The relationship between temperature and average absorption rate is negatively correlated.In our experimental context,the adsorption isotherm is con-sistent with both linear adsorption isotherm equation and Freundlich isotherm equation.The adsorption is a spontaneous endothermic reaction.Fluvo-aquic soils adsorption capacity of oxytetracycline has a positive relation with the content of silt and clay.Adsorption of oxytetracycline on fluvo-aquic soils was affected by initial con-centration,temperature,and soil properties.It is helpful to control pollution of oxytetracycline and protect soils if the mechanisms are understood deeply.