Sulfur Speciation in an Arable Soil as Affected by Sample Pretreatments and Sewage Sludge Application
Luo, L; Xu, C; Ma, YB; Zheng, L; Liu, LJ; Lv, JT; Zhang, SZ;郑雷; Liu LJ(刘利娟)
刊名SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
2014
卷号78期号:5页码:1615-1623
学科分类Agriculture
DOI10.2136/sssaj2013.11.0506
英文摘要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.
收录类别SCI
WOS记录号WOS:000343164600013
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225376
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
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Luo, L,Xu, C,Ma, YB,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, L.,Xu, C.,Ma, YB.,Zheng, L.,Liu, LJ.,...&刘利娟.(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, L,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.
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