土壤性质对抗生素吸附的影响  

Effects of Soil Properties on Sorption of Antibiotics

作　　者：王丽平[1,2] 章明奎[1,2] 

机构地区：[1]浙江大学环境与资源学院资源科学系,浙江杭州310029 [2]浙江省亚热带土壤与植物营养重点研究实验室,浙江杭州310029

出　　处：《土壤通报》2009年第2期420-423,共4页Chinese Journal of Soil Science

基　　金：教育部博士学科点专项科研基金(20060335018)项目资助

摘　　要：抗生素可通过施用动物粪便等方式进入农业土壤,其去向及其对土壤微生物等的影响与土壤对其的吸附强弱密切相关。为了解抗生素进入不同类型土壤后的吸附情况,为预测抗生素在土壤中的行为提供依据,本文选择了泰乐菌素和磺胺二甲嘧啶2种抗生素,研究了它们在26个理化性质相差较大的土壤中的吸附情况。结果表明,土壤对抗生素的吸附强度因土壤类型和抗生素种类的不同可有很大的变化。土壤对泰乐菌素的吸附明显高于对磺胺二甲嘧啶的吸附;土壤对泰乐菌素吸附的Kd值主要与粘粒和氧化铁含量有关,而对磺胺二甲嘧啶的吸附主要与土壤有机质和氧化铁含量相关。Soil en;eironments may be exposed to pharmaceutical antibiotics due to the application of animal manure to agricultural land. The fate and effects of the antibiotics in soils are governed by sorption. Thus, laboratory studies were conducted to characterize the sorption of two typical antibiotic compounds （Tylosin,C46H77NO17 and Sulfadimidine, C12H14N4O2S） using 26 soils with various physical and chemical properties. The results showed that adsorption behaviors were related with species of antibiotics and soil properties. The extent of the soil sorption of tylosin was much higher than that of sulfadimidine. The sorption of tylosin was mainly related with soil texture and oxide iron content, while that of sulfadimidine was controlled by soil organic matter and oxide iron content.

关 键 词：抗生素 吸附 影响因素 

分 类 号：X592[环境科学与工程—环境工程]