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抗生素与粘土矿物及有机粘土衍生物的竞争缔合作为控制其在环境中寿命的手段

Competitive Association of Antibiotics with a Clay Mineral and Organoclay Derivatives as a Control of Their Lifetimes in the Environment.

作者信息

De Oliveira Tiago, Fernandez Elodie, Fougère Laëtitia, Destandau Emilie, Boussafir Mohammed, Sohmiya Minoru, Sugahara Yoshiyuki, Guégan Régis

机构信息

Institut des Sciences de la Terre d'Orléans, UMR 7327, CNRS-Université d'Orléans, 1A Rue de la Férollerie, 45071 Orléans Cedex 2, France.

Institut de Chimie Organique et Analytique, UMR 7311, CNRS-Université d'Orléans, Rue de Chartres, 45067 Orléans Cedex 2, France.

出版信息

ACS Omega. 2018 Nov 30;3(11):15332-15342. doi: 10.1021/acsomega.8b02049. Epub 2018 Nov 12.

DOI:10.1021/acsomega.8b02049
PMID:30556002
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6289540/
Abstract

A Na-smectite clay mineral (Na-Mt) was exchanged with two concentrations of benzyldimethyltetradecyl ammonium chloride cationic surfactant up to one time the cation exchange capacity. Nonionic organoclay was prepared with polyoxyethylene (20) oleyl ether (Brij-O20) nonionic surfactant at one concentration. The resulting organoclays displayed lateral layer organization of the surfactants within their interlayer space.. The adsorption properties of these organoclays and the starting raw clay mineral were evaluated for three extensively used antibiotic pharmaceutical products: the amoxicillin (AMX), the sulfamethoxazole (SMX), and the trimethoprim (TRI), recognized as recalcitrant compounds to conventional water treatments and to display a complex behavior for different pH and temperature experimental conditions. Besides showing short half-life time with possible degradation by UV radiation, these antibiotics associated with mineral phases cause serious environmental issues of which the toxic effect can be exacerbated in the presence of other chemical compounds. From the set of data obtained by complementary techniques: UV and Fourier transform infrared spectroscopy, high-performance liquid chromatography coupled with mass spectrometry, and X-ray diffraction, it appears that the nonionic organoclay shows its versatility for the adsorption of individual molecules as well as a pool of antibiotics. The mixing of the three antibiotics showing different electric charged species (cations, anions, and zwitterions) mimics the natural context drives to a deep modification of the adsorption behavior onto the different materials that can act as possible carrier mineral phases in aquatic environment. These competition effects can be measured through the significant decrease of the Freundlich constants for AMX in the presence of other molecules (or electrolytes), whereas TRI and SMX, by their possible association, create a synergistic effect that favors their adsorption on the whole layered materials.

摘要

一种钠蒙脱石粘土矿物（钠蒙脱石）与两种浓度的苄基二甲基十四烷基氯化铵阳离子表面活性剂进行交换，交换量最高达到阳离子交换容量的一倍。用聚氧乙烯（20）油醚（Brij - O20）非离子表面活性剂在一种浓度下制备了非离子有机粘土。所得有机粘土在其层间空间内显示出表面活性剂的横向层状结构。对这三种广泛使用的抗生素药物产品评估了这些有机粘土和起始原料粘土矿物的吸附性能：阿莫西林（AMX）、磺胺甲恶唑（SMX）和甲氧苄啶（TRI），它们被认为是常规水处理难以去除的化合物，并且在不同的pH和温度实验条件下表现出复杂的行为。除了显示出短半衰期且可能被紫外线辐射降解外，这些与矿物相相关的抗生素会引发严重的环境问题，在存在其他化合物的情况下，其毒性作用可能会加剧。从通过互补技术获得的数据集：紫外和傅里叶变换红外光谱、高效液相色谱 - 质谱联用以及X射线衍射来看，非离子有机粘土显示出其对单个分子以及一组抗生素吸附的多功能性。三种显示不同带电种类（阳离子、阴离子和两性离子）的抗生素混合模拟了自然环境，导致对不同材料吸附行为的深度改变，这些材料可能在水生环境中充当载体矿物相。这些竞争效应可以通过在存在其他分子（或电解质）时AMX的弗伦德利希常数显著降低来衡量，而TRI和SMX通过它们可能的缔合产生协同效应，有利于它们在整个层状材料上的吸附。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0044/6646771/58f85116288c/ao-2018-020498_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0044/6646771/01e41df3e73d/ao-2018-020498_0010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0044/6646771/81df80952451/ao-2018-020498_0011.jpg
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Adsorption of diclofenac onto organoclays: Effects of surfactant and environmental (pH and temperature) conditions.
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J Hazard Mater. 2017 Feb 5;323(Pt A):558-566. doi: 10.1016/j.jhazmat.2016.05.001. Epub 2016 May 3.
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Organic Contaminants in Chinese Sewage Sludge: A Meta-Analysis of the Literature of the Past 30 Years.中国污水污泥中的有机污染物：过去 30 年文献的荟萃分析。
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Sandwich organization of non-ionic surfactant liquid crystalline phases as induced by large inorganic K4Nb6O17 nanosheets.由大型无机K4Nb6O17纳米片诱导形成的非离子表面活性剂液晶相的三明治结构。
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