頁籤選單縮合
題 名 | Organic Waste Composts, a Serious Rare-Earth Source as Determined by Neutron Activation Analysis=利用中子活化分析法測定有機廢棄物堆肥中之稀土元素含量 |
---|---|
作 者 | Sroor,A.; El-Bahi,S. M.; Abdel-Haleem,A. S.; Abdel-Sabour,M. F.; | 書刊名 | 核子科學 |
卷 期 | 35:6 1998.12[民87.12] |
頁 次 | 頁441-446 |
分類號 | 343.382 |
關鍵詞 | 中子活化分析法; 有機廢棄物; 堆肥; 稀土元素; Heavy metals in organic compost; Agriculture soil environment; Neutron activation analysis; |
語 文 | 英文(English) |
英文摘要 | Delayd Neutron Activation Analysis technique (DNAA) was applied for investigating rare-earth elements and some heavy metals content of some locally organic fertilizers namely cattle manure (CM), dried sewage sludge (SS), municipal solid waste (MSW) and mixture for a (SS+MSW). The γ -ray spectrum of each sample was investigated using an HPGe detector equipped with computer unit. Fourteen elements were determined. Some of them were confirmed by the γ - γ cascades using an HPGe-HPGe coincidence spectrometer. The concentration ranges of the elements measured in μ g /g were 0.36-17.00, 275.00-660.00, 2.19-5.80, 9.47-37.83, 13.62-90.22, 1.23-1.88, 0.17-0.89, 2.81-16.04, 0.18-0.90, 9.28-39.60, 0.91-2.20, 0.16-1.03, 0.01-0.18 and 0.07-0.50 for Sc, Cr, Sb, La, Ce, Sm, Eu, Yb, Lu, Hf, Ta, Au, Hf and Pa, respetively. Some of these elements may lead to undesirable environmental effects. The undiscriminating uee of organic waste as organic fertilizers may result in the increase of toxic elements (Cr, Sc, Sb, Th, etc.) in soil environment, which may transfer through food chain to human body. |
本系統中英文摘要資訊取自各篇刊載內容。