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比重計法とピペット法によって測定される微粒子の粒度分布の妥当性
https://nodai.repo.nii.ac.jp/records/520
https://nodai.repo.nii.ac.jp/records/5204468d308-cc31-462a-a2e1-c179e9cb90ba
名前 / ファイル | ライセンス | アクション |
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KJ00008890439.pdf (1.5 MB)
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Item type | [ELS]紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2013-12-16 | |||||
タイトル | ||||||
タイトル | 比重計法とピペット法によって測定される微粒子の粒度分布の妥当性 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Validity of Size Distribution of Fine Particles Measured by the Hydrometer and Pipette Methods | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ストークス抵抗則 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 比重計法 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ピペット法 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 粒径加積曲線 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 濃度依存性 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Stokes' law | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | pipette methods | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | hydrometer methods | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | size distribution | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | concentration dependence | |||||
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 | departmental bulletin paper | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00164184 | |||||
論文名よみ | ||||||
タイトル | ヒジュウケイ ホウ ト ピペット ホウ 二 ヨッテ ソクテイ サレル ビリュウシ ノ リュウド ブンプ ノ ダトウセイ | |||||
著者 |
中村, 貴彦
× 中村, 貴彦× 藤川 智紀× Nakamura, Takahiko× Fujikawa Tomonori |
|||||
著者所属(日) | ||||||
東京農業大学地域環境科学部生産環境工学科 | ||||||
著者所属(日) | ||||||
東京農業大学地域環境科学部生産環境工学科 | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Bioproduction and Environment Engineering, Faculty of Regional Environment Science, Tokyo University of Agriculture | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Bioproduction and Environment Engineering, Faculty of Regional Environment Science, Tokyo University of Agriculture | ||||||
記事種別(日) | ||||||
内容記述タイプ | Other | |||||
内容記述 | 論文 | |||||
記事種別(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article | |||||
抄録(日) | ||||||
内容記述タイプ | Other | |||||
内容記述 | 土粒子の粒度分析法には比重計法とピペット法がある。本研究の目的は2つの方法により得られる粒度分布の妥当性と,測定される粒径の意義について検討することである。ある粒度分布をもつ剛体球からなるモデル粒子群を用いて,懸濁液中のすべての粒子がストークス抵抗則を適用して沈降する過程を計算した。その結果,ピペット法で得られる粒度分布はモデル土壌の粒度分布に一致したことから,計算によって沈降状態を再現するシミュレーションの妥当性を示した。次に,このシミュレーションを用いて比重計法を行って粒度分布を得た結果,ピペット法及びモデル土壌の粒度分布が一致したことから,本研究で設定した有機物分解と分散が十分に行われており,流体力学的相互作用が無視できる場でのストークス沈降下では,ピペット法と比重計法とは同じ粒度分布を与えうること,また両者の積算通過質量分率の測定時の粒径は,ともにそのときの懸濁液中の最大粒径を測定していることが明らかとなった。さらに濃度依存性を取り入れたシミュレーションおよび実際の測定を行った結果,供試粒子濃度を稀薄にすることで,より実際に近い粒度分布を測定できる可能性があることが示唆された。 | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | There are two methods of analyzing size distribution of soil particles, the hydrometer method and the pipette method. The objective of this study is to investigate the validity of these two methods and the meaning of diameter measured by two methods. Using model spherical particles with no permeable rigid body, size distribution of these particles were calculated by simulation of sinking according to Stokes' law. A particle size distribution by this calculation process with the pippette method was the same as that by the real pippette method in principle. So this process was shown to be valid for the estimation of particle size distribution because the calculated distribution by the pipette method was in accordance with an already-known distribution of model particles. Also, simulated size distribution obtained by the hydrometer method corresponded to others, therefore, it was concluded that the hydrometer method and the pipette method provided good consistent results under full decomposition of organic matter, perfect dispersion of single particles and without hydrodynamic interaction. And the diameter corresponding to cumulative undersize measured in the two methods also indicated maximum size of particles in suspension. Furthermore, the authors found that using dilute suspension possibly brought about appropriate results of size distribution even if no Stokes' law condition was achieved through the experiment with varied concentration of suspension. | |||||
書誌情報 | 巻 58, 号 3, p. 125-132 | |||||
レポート・講演番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | E | |||||
表示順 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 2 | |||||
アクセション番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | KJ00008890439 |