Sorption of sulfadiazine on Brazilian soils

被引：69

作者：

Doretto, Keity Margareth ^{[1
]}

Rath, Susanne ^{[1
]}

机构：

[1] Univ Estadual Campinas, Dept Analyt Chem, Inst Chem, BR-13084971 Campinas, SP, Brazil

来源：

CHEMOSPHERE | 2013年 / 90卷 / 06期

基金：

巴西圣保罗研究基金会;

关键词：

Batch experiments; Brazilian soils; Freundlich sorption isotherms; Antimicrobials; Sulfadiazine; SULFONAMIDE ANTIBIOTICS; ORGANIC CONTAMINANTS; DESORPTION; FATE; TRANSPORT; SULFADIMETHOXINE; PHARMACEUTICALS; TRANSFORMATION; HYSTERESIS; SEDIMENTS;

D O I：

10.1016/j.chemosphere.2012.10.084

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Antimicrobials, among them sulfonamides are widely used in veterinary medicine and can contaminate the environment. The degree to which antimicrobials adsorb onto soil particles varies widely, as does the mobility of these drugs. Sulfadiazine (SDZ) was used to study the adsorption-desorption in Brazilian soil-water systems, using batch equilibrium experiments. Sorption of SDZ was carried out using four types of soils. Adsorption and desorption data were well fitted with Freundlich isotherms in log form (r > 0.999) and (0.984 < r < 0.999), respectively. An adsorption-desorption hysteresis phenomenon was apparent in all soils ranging from 0.517 to 0.827. The experimental results indicate that the Freundlich sorption coefficient (K-F) values for SDZ ranged from 0.45 to 2.6 mu g(1-1/n) (cm(3))(1/n) g(-1). (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：2027 / 2034

页数：8

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