Nature of the HCl-soluble sulfate in the sequential extraction for sulfur speciation in soils
文献类型：期刊论文
| 作者 | Chen, B; Shan, XQ; Shen, DQ; Mou, SF |
| 刊名 | FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
 |
| 出版日期 | 1997 |
| 卷号 | 357期号:7页码:941-945 |
| 英文摘要 | Thirty soils collected from different regions of China were used to investigate the nature of HCl-soluble sulfate (HCl-S) and to evaluate the importance of HCl-S for sulfur speciation in soils. The soils were first extracted with NaH2PO4 solution to remove water-soluble and adsorbed sulfate, followed by extraction in 1 mol/l HCl at room temperature, minimizing the hydrolysis of organic sulfur into sulfate. Excellent linear correlations (r = 0.986) were found between the HCl-S and the carbonate contents in these soils, indicating HCl-S was mainly the carbonate-occluded inorganic sulfate in calcareous soils, averaging for 39% of total sulfur. However, the traditionally recog nized major form of soil sulfate (water-soluble and adsorbed sulfate) only account for 7.5% of total sulfur. The non-calcareous soils were also found to contain some of HCl-S (6.9% of total sulfur). Large errors will occur in the determination of ester sulfur if HCl-S is not subtracted from the HI-reducible sulfur, especially in calcareous soils and soils containing little organic matter, which was the common practice in sulfur speciation studies. The reasonableness of including HCl-S in the subtraction method to determine ester sulfur was further verified by the good correlations between ester sulfur and organic carbon content in the soils. |
| WOS记录号 | WOS:A1997WT96100030 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24352]  |
| 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 | Chen, B,Shan, XQ,Shen, DQ,et al. Nature of the HCl-soluble sulfate in the sequential extraction for sulfur speciation in soils[J]. FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY,1997,357(7):941-945. |
| APA | Chen, B,Shan, XQ,Shen, DQ,&Mou, SF.(1997).Nature of the HCl-soluble sulfate in the sequential extraction for sulfur speciation in soils.FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY,357(7),941-945. |
| MLA | Chen, B,et al."Nature of the HCl-soluble sulfate in the sequential extraction for sulfur speciation in soils".FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY 357.7(1997):941-945. |
入库方式： OAI收割
来源：生态环境研究中心
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