Sulfur Speciation in an Arable Soil as Affected by Sample Pretreatments and Sewage Sludge Application
文献类型：期刊论文
| 作者 | Luo, Lei ; Xu, Chuang ; Ma, Yibing ; Zheng, Lei ; Liu, Lijuan ; Lv, Jitao ; Zhang, Shuzhen |
| 刊名 | SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
 |
| 出版日期 | 2014 |
| 卷号 | 78期号:5页码:1615-1623 |
| ISSN号 | 0361-5995 |
| 中文摘要 | Sulfur speciation under the influence of sample pretreatment and sewage sludge (SS) application in a continuously SS-amended soil was assessed by wet-chemical fractionation and S K-edge XANES spectroscopy. Distinct differences in S speciation among the following pretreatments including fresh, air-drying, anoxic freeze-drying, oven-drying, and conditioning (incubation at room temperature and 75% of water holding capacity for 2 wk) were detected in both topsoils and subsoils. Air-drying significantly increased available S content but decreased C-bonded S content in the soils compared with anoxic freeze-drying. Oven-drying and conditioning pretreatments showed a similar effect on S fractions to air-drying in the soils but to a lesser extent. X-ray adsorption near-edge structure analysis showed that both reduced and intermediate organic S tended to decrease while oxidized S obviously increased in the air-dried samples. In contrast, the conditioning pretreatment facilitated the transformation of intermediate S into reduced organic S. Continuous application of SS significantly increased total soil S, C-bonded S, and residual S contents but decreased available S content in the topsoil. Meanwhile, XANES analysis indicated that reduced organic S was markedly increased (over 50% of total S) in the SS-amended topsoil. No obvious effect of the application of SS on S speciation in the subsoil was observed except for the facilitated transportation of S into lower depth. Overall, our results suggest that anoxic atmospheres during the entire pretreatment process from sampling to drying, grinding, and analysis is crucial for the accurate speciation analysis of S in soils, and the anoxic freeze-drying is, therefore, highly recommended. |
| WOS记录号 | WOS:000343164600013 |
| 公开日期 | 2015-03-24 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9468]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Luo, Lei,Xu, Chuang,Ma, Yibing,et al. Sulfur Speciation in an Arable Soil as Affected by Sample Pretreatments and Sewage Sludge Application[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2014,78(5):1615-1623. |
| APA | Luo, Lei.,Xu, Chuang.,Ma, Yibing.,Zheng, Lei.,Liu, Lijuan.,...&Zhang, Shuzhen.(2014).Sulfur Speciation in an Arable Soil as Affected by Sample Pretreatments and Sewage Sludge Application.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,78(5),1615-1623. |
| MLA | Luo, Lei,et al."Sulfur Speciation in an Arable Soil as Affected by Sample Pretreatments and Sewage Sludge Application".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 78.5(2014):1615-1623. |
入库方式： OAI收割
来源：生态环境研究中心
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