磺胺类抗生素对土壤脱氢酶的影响

Effects of Sulfonamides on the Enzyme Activities of the Soil

摘要: 磺胺类抗生素因其价低、稳定性良好等特质被广泛使用于医疗、养殖等行业，进而进入生态环境中，其在土壤中很容易发生迁移转化。因此本实验探究了磺胺甲基嘧啶(SM1)、磺胺甲恶唑(SMZ)及磺胺噻唑(ST)在单一及联合作用下对蚯蚓培养中心土壤及主体土壤中脱氢酶活性的影响。结果表明，不同浓度单一及联合磺胺类抗生素对蚯蚓培养中心土壤及主体土壤中脱氢化酶(DHA)活性皆有诱导作用。由此可见，可以用蚯蚓培养中心土壤及主体土壤中脱氢化酶活性变化来表征土壤磺胺类抗生素的污染状况。

Abstract: Sulfonamide antibiotics are widely used in medical, aquaculture and other industries due to their low price and good stability, then entering the ecological environment. Sulfonamide is easy to migrate and transform in the soil. Therefore, this experiment uses earthworms as indicator organisms to explore the dehydrogenase activity of sulfamethazine (SM1), sulfamethoxazole (SMZ) and sulfathiazole (ST) in the soil of the earthworm culture center and bulk soil under single and combined mode. The results showed that the dehydrogenase (DHA) activities in the soil of the earthworm culture center and bulk soil were induced by different concentrations of single and combined sulfonamides. It can be seen that the changes in dehydrogenase activity in the soil of the earthworm culture center and bulk soil could be used to indicate the sulfonamide pollution of soil.