浙江农业学报

• 环境科学 • 上一篇    下一篇

不同外源溶解性有机质对黄壤中土霉素降解的影响

  

  1. (1 贵州省土壤肥料研究所,贵州 贵阳 550006;2 贵州大学 资源与环境工程学院,贵州 贵阳 550025;3 宜宾职业技术学院 校企合作办公室,四川 宜宾 644003;4 贵州民族大学 化学与环境科学学院,贵州 贵阳 550025)
  • 出版日期:2015-06-25 发布日期:2015-06-26

Effects of dissolved organic matter on the degradation of oxytetracycline on yellow soil

  1. (1 Guizhou Institute of Soil and Fertilizer, Guiyang 550006, China; 2 College of Resources and Environment Engineering, GuiZhou University, Guiyang 550025, China; 3 School\|Enterprise Office, Yibin Vocation and Technical College, Yibin 644003, China; 4 School of Chemistry and Environment Science, Guizhou Minzu University, Guiyang 550025, China)
  • Online:2015-06-25 Published:2015-06-26

摘要: 选择土霉素为模式药物,研究了不同浓度的外源溶解性有机物质(有机肥、腐殖酸、L\|苹果酸)对黄壤中土霉素降解的影响。结果表明,在加入有机肥、腐殖酸和L\|苹果酸后,无论黄壤是否灭菌,土霉素在黄壤中的降解速率都显著提高,半衰期明显缩短,并且其降解动态均符合一级动力学方程。

关键词: 溶解性有机质, 土霉素, 黄壤, 降解

Abstract: A soil cultural pot experiment was conducted to investigate the effects of dissolved organic matter (manure, humic acid and malic acid) on the degradation of oxytetracycline in yellow soil. It was shown that whether the soil was sterilized or not, the degradation rate of oxytetracycline increased significantly and the half\|life period turned shorter obviously after the addition of dissolved organic matter. The first order kinetics equation well fitted the degradation processes of oxytetracycline with different concentrations of dissolved organic matter.

Key words: dissolved organic matter, oxytetracycline, yellow soil, degradation