【摘要】 基于过氧化氢（H₂O₂）的芬顿或类芬顿试剂被广泛应用于有机污染土壤的修复,但其对土壤基本性质及微生物群落的影响研究较少。本文以H₂O₂和不同的芬顿体系为研究对象,系统考察了H₂O₂、V₂O₃/H₂O₂、柠檬酸铁/H₂O₂体系对土壤有机质、铵态氮、硝态氮及微生物的影响。结果表明:H₂O₂在土壤中快速被分解,同时伴随着土壤有机质含量的显著下降和铵态氮含量的显著升高,土壤硝态氮含量变化不明显。高通量测序分析发现,H₂O₂和芬顿试剂显著降低了土壤微生物的多样性。更多还原

【Abstract】 Hydrogen peroxide-based Fenton or Fenton-like reactions have been used extensively for the remediation of organic pollutants in the contaminated sites. However, the effects of H₂O₂ or Fenton reactions on soil properties and microbial communities are not fully understood. In this study, the effects of H₂O₂ and different Fenton reagents including H₂O₂, H₂O₂/V_2O3 and H₂O₂/citrate chelated ferric on soil properties and microbial communities were studied. The results showed that H₂O₂ was decomposed quickly in soil accompanied with obvious degradation of soil organic matter（SOM）, dramatic increase of soil ammonium nitrogen, and slight change of soil nitrate nitrogen. High-throughput sequencing was used to analyze microbial multi-samples and biome structure in soil, and it was found that H₂O₂ and Fenton reagents significantly reduced soil microbial diversity.更多还原