|
|||||
|
|
| 基于烧失量指数评估滨海沉积物中有机质特征 | |
| 引用本文： | Narong TOUCH,Tadashi HIBINO,Hiroki TAKATA,Satoshi YAMAJI. 基于烧失量指数评估滨海沉积物中有机质特征[J]. 土壤圈, 2017, 27(5): 978-984. DOI: 10.1016/S1002-0160(17)60487-9 |
| 作者姓名： | Narong TOUCH Tadashi HIBINO Hiroki TAKATA Satoshi YAMAJI |
| 作者单位： | Coastal Engineering Laboratory, Department of Civil and Environmental Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashihiroshima-Shi, Hiroshima 739-8527 Japan,Coastal Engineering Laboratory, Department of Civil and Environmental Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashihiroshima-Shi, Hiroshima 739-8527 Japan,Coastal Engineering Laboratory, Department of Civil and Environmental Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashihiroshima-Shi, Hiroshima 739-8527 Japan,Coastal Engineering Laboratory, Department of Civil and Environmental Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashihiroshima-Shi, Hiroshima 739-8527 Japan |
| 基金项目： | The authors gratefully acknowledge the Grantin-Aid for Science Research from the Japan Soci-ety for the Promotion of Science (Nos. 26820204 and 26630229). The constructive comments of anonymous reviewers are also appreciated. |
| 摘 要： | Understanding organic matter characteristics(e.g., amount and state) of sediments is necessary for evaluating both the sediment and water environments; however, methods that have been proposed to investigate these characteristics are relatively expensive. This study attempted to evaluate the organic matter characteristics of littoral sediments by employing solely the loss on ignition(LOI)method, which is the most economical and accessible method in developing countries. Different types of sediments were first oven dried at 100℃ and then continuously burned at 200, 300, 400, 500, and 600℃ for 4 h at each temperature. The mass LOI at each temperature was calculated and compared with the 100℃ oven-dried weight. Our results suggested that the mass LOI across the temperature range of 200–300℃(LOI_(200-300)):mass LOI at 600℃(LOI_(600)) ratio(LOI_(200-300)/LOI_(600)) could represent different types of sediments as well as the organic matter:organic C ratio. Compared with the sediments unaffected by wastewater, the sediments that were more influenced by the inflow of domestic wastewater had a higher LOI_(200-300)/LOI_(600). Interestingly, LOI_(200-300)/LOI_(600) could also represent changes in the organic matter characteristics as a function of organic matter decomposition in sediments. In conclusion, the organic matter characteristics of littoral sediments could be evaluated using solely the LOI method, particularly with LOI_(200-300)/LOI_(600). |
| 关 键 词： | C loss decomposition mass loss on ignition organic matter state sediment type |
| 收稿时间： | 2017-03-30 |
| 修稿时间： | 2017-09-02 |
Loss on ignition-based indices for evaluating organic matter characteristics of littoral sediments |
|
| Narong TOUCH,Tadashi HIBINO,Hiroki TAKATA and Satoshi YAMAJI. Loss on ignition-based indices for evaluating organic matter characteristics of littoral sediments[J]. Pedosphere, 2017, 27(5): 978-984. DOI: 10.1016/S1002-0160(17)60487-9 | |
| Authors: | Narong TOUCH Tadashi HIBINO Hiroki TAKATA Satoshi YAMAJI |
| Affiliation: | Coastal Engineering Laboratory, Department of Civil and Environmental Engineering, Hiroshima University, Kagamiyama 1-4-1,Higashihiroshima-Shi, Hiroshima 739-8527 Japan |
| Abstract: | Understanding organic matter characteristics (e.g.,amount and state) of sediments is necessary for evaluating both the sediment and water environments;however,methods that have been proposed to investigate these characteristics are relatively expensive.This study attempted to evaluate the organic matter characteristics of littoral sediments by employing solely the loss on ignition (LOI)method,which is the most economical and accessible method in developing countries.Different types of sediments were first oven dried at 100 ℃ and then continuously burned at 200,300,400,500,and 600 ℃ for 4 h at each temperature.The mass LOI at each temperature was calculated and compared with the 100 ℃ oven-dried weight.Our results suggested that the mass LOI across the temperature range of 200 300 ℃ (LOI200-300):mass LOI at 600 ℃ (LOI600) ratio (LOI200-300/LOI600) could represent different types of sediments as well as the organic matter:organic C ratio.Compared with the sediments unaffected by wastewater,the sediments that were more influenced by the inflow of domestic wastewater had a higher LOI200-300/LOI600.Interestingly,LOI200-300/LOI600 could also represent changes in the organic matter characteristics as a function of organic matter decomposition in sediments.In conclusion,the organic matter characteristics of littoral sediments could be evaluated using solely the LOI method,particularly with LOI200-300/LOI600. |
| Keywords: | C loss decomposition mass loss on ignition organic matter state sediment type |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《土壤圈》浏览原始摘要信息 | |
| 点击此处可从《土壤圈》下载全文 | |