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On the use of coprostanol to identify source of nitrate pollution in groundwater
http://hdl.handle.net/10069/37585
http://hdl.handle.net/10069/3758579ac5aa1-bd56-4ac0-9b14-d6ce156eada6
名前 / ファイル | ライセンス | アクション |
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JHydro550_663.pdf (1.3 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-08-01 | |||||
タイトル | ||||||
タイトル | On the use of coprostanol to identify source of nitrate pollution in groundwater | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Coprostanol | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Groundwater | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Nitrate pollution | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Stable isotopes | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Nakagawa, Kei
× Nakagawa, Kei× Amano, Hiroki× Takao, Yuji× Hosono, Takahiro× Berndtsson, Ronny |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Investigation of contaminant sources is indispensable for developing effective countermeasures against nitrate (NO3 ?) pollution in groundwater. Known major nitrogen (N) sources are chemical fertilizers, livestock waste, and domestic wastewater. In general, scatter diagrams of δ18O and δ15N from NO3 ? can be used to identify these pollution sources. However, this method can be difficult to use for chemical fertilizers and livestock waste sources due to the overlap of δ18O and δ15N ranges. In this study, we propose to use coprostanol as an indicator for the source of pollution. Coprostanol can be used as a fecal contamination indicator because it is a major fecal sterol formed by the conversion of cholesterol by intestinal bacteria in the gut of higher animals. The proposed method was applied to investigate NO3 ? pollution sources for groundwater in Shimabara, Nagasaki, Japan. Groundwater samples were collected at 33 locations from March 2013 to November 2015. These data were used to quantify relationships between NO3-N, δ15N-NO3 ?, δ18O-NO3 ?, and coprostanol. The results show that coprostanol has a potential for source identification of nitrate pollution. For lower coprostanol concentrations (<30 ng L?1) in the nitrate-polluted group, fertilizer is likely to be the predominant source of NO3 ?. However, higher concentration coprostanol samples in the nitrate-polluted group can be related to pollution from livestock waste. Thus, when conventional diagrams of isotopic ratios cannot distinguish pollution sources, coprostanol may be a useful tool. | |||||
書誌情報 |
Journal of Hydrology 巻 550, p. 663-668, 発行日 2017-07 |
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出版者 | ||||||
出版者 | Elsevier B.V. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00221694 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.jhydrol.2017.05.038 | |||||
権利 | ||||||
権利情報 | c 2017 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Journal of Hydrology, 550, pp.663-668; 2017 |