Quantitative models for predicting adsorption of oxytetracycline, ciprofloxacin and sulfamerazine to swine manures with contrasting properties

文献类型： 外文期刊

第一作者： Cheng, Dengmiao

作者： Cheng, Dengmiao;Feng, Yao;Liu, Yuanwang;Li, Zhaojun;Li, Jinpeng;Xue, Jianming;Xue, Jianming

作者机构：

关键词： Oxytetracycline; Ciprofloxacin; Sulfamerazine; Swine manure; Distribution coefficient

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2018 年 634 卷

页码：

收录情况： SCI

摘要： Understanding antibiotic adsorption in livestock manures is crucial to assess the fate and risk of antibiotics in the environment. In this study, three quantitativemodels developed with swinemanure-water distribution coefficients (LgK(d)) for oxytetracycline (OTC), ciprofloxacin (CIP) and sulfamerazine (SM1) in swine manures. Physicochemical parameters (n = 12) of the swine manure were used as independent variables using partial least-squares (PLSs) analysis. The cumulative cross-validated regression coefficients (Q(cum)(2)) values, standard deviations (SDs) and external validation coefficient (Q(ext)(2)) ranged from0.761 to 0.868, 0.027 to 0.064, and 0.743 to 0.827 for the threemodels; as such, internal and external predictability of the models were strong. The pH, soluble organic carbon (SOC) and nitrogen (SON), and Ca were important explanatory variables for the OTC-Model, pH, SOC, and SON for the CIPmodel, and pH, total organic nitrogen (TON), and SOC for the SM1-model. The high VIPs (variable importance in the projections) of pH (1.178-1.396), SOC (0.968-1.034), and SON (0.822 and 0.865) established these physicochemical parameters as likely being dominant (associatively) in affecting transport of antibiotics in swine manures. (C) 2018 Elsevier B.V. All rights reserved.

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