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Estimation of the anthropogenic U content in agricultural soil due to addition of phosphatic fertilizers
https://repo.qst.go.jp/records/69137
https://repo.qst.go.jp/records/6913736bcb5ca-7a5b-4fbf-ae47-b7fc0fcbaba5
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2007-10-25 | |||||
| タイトル | ||||||
| タイトル | Estimation of the anthropogenic U content in agricultural soil due to addition of phosphatic fertilizers | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Uchida, Shigeo
× Uchida, Shigeo× Tagami, Keiko× 内田 滋夫× 田上 恵子 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | U and Th concentrations are highly correlated with each other in rocks, non-agricultural field soil samples and river sediments so that their U/Th concentration ratios are almost the same (0.20-0.28). However, in agricultural fields, their U concentrations have been reported as relatively high1) possibly due to application of phosphatic fertilizers produced from phosphate rocks. To estimate the excess amount of U (Uess) originating from fertilizers, the natural U/Th ratio in non-agricultural fields would be useful because the fertilizers are known to be high in U content and low in Th content which makes the U/Th ratios much higher than in non-agricultural fields. In this study, we measured U and Th concentrations in 112 Japanese agricultural fields, and estimated Uess using the U/Th concentration ratios. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Eighth Conference of the East and Southeast Asian Federation of Soil Science Societies (ESAFS 8) | |||||
| 発表年月日 | ||||||
| 日付 | 2007-10-23 | |||||
| 日付タイプ | Issued | |||||
