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題 名 | Observation of Element Distribution in Potassium Deficient Barley (Hordeum Vulgare L.) Leaf by Energy Dispersive X-ray Fluorescence Analysis=利用能量散射X射線螢光光譜分析法觀測缺鉀大麥(Hordeum Vulgare L.)葉片之元素分佈 |
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作 者 | Miah,M. Y.; Chino,M.; | 書刊名 | Botanical Bulletin of Academia Sinica |
卷 期 | 40:2 1999.04[民88.04] |
頁 次 | 頁135-140 |
分類號 | 341.94 |
關鍵詞 | 大麥; 礦物元素; 鉀; X射線螢光光譜; Barley; Mineral element; Potassium; X-ray fluorescen; |
語 文 | 英文(English) |
中文摘要 | 利用能量散射X射線螢光光譜分析法觀(energy dispersvie X-ray flu ores cence EDXRF )進行大麥葉內鈣、氨、磷、矽、及鉀等元素旳定性分析。具有乏症狀的葉片樣本由長期施用污泥堆肥的田區採得,然後葉子以去離子水徹底清洗,再利用熨斗熨燙使葉片乾燥。乾燥後的葉片以x-射線照葉樣本表面,照射面積直為100um。EDXRF對、磷、矽等元素的相含量有高度的靈敏度。其中氨、磷及硫念量分佈圖譜均勻的,依據圖像之密度顯示葉片樣品的均勻程度依序氨>硫>磷。相對而言,葉片中的?、鉀、矽的含量分佈與葉脈之辦識程度依序為鈣>鉀>矽。然而葉片的症狀如〔〕〔〕斑點(necrotic lesioms)與鉀的分佈並無相關性。,但〔〕〔〕斑處卻發現有相當量的矽存在,根據x射線〔〕透影所得知之缺鉀的大麥葉片中鈣、氨、磷、矽等元素的相對含量,研判缺鉀並不致於影響到葉生長育所需之其它元素的分佈。 |
英文摘要 | An energy dispersive X-ray fluorescence (EDXRF) method for the qualitative analysis of calcium (Ca), chlorine (CI), sulfur (S), phosphorus (P), silicon (Si), and magnesium (Mg) against potassium (K) in barley leaf is presented. Leaf samples associated with K deficiency symptoms were collected from standing barley plants grown on long term sewage sludge compost receiving plots. Then leaves were deep washed in deionized distilled water and dried by ironing. Dried barley leaf sample irradiation was accomplished with an X-ray obtained from an X-ray tube focused on an area of <100 μm in diameter of the sample specimen surface. EDXRF provided sufficient sensitivity for relative concentrations of Ca, Cl, S, P, Si. The distribution pattern of Cl, P and S was homogeneous in the order Cl> S> P, based on the density of droplet integrals which were evenly distributed in the sample leaf. In contrast, the distribution pattern of Ca, K, and Si was categorized in the order Ca> K> Si, focused on vein visibility. However, no relationship existed between K distribution and its characteristics symptoms such as necrotic lesions. However, such lesions were fairly visible with Si distribution. Based on X-ray transmitted images of K deficient barley leaf for relative concentrations of Ca, Cl, S, P, Si, it was concluded that potassium deficiency does not affect the distribution in leaves of other elements needed for plant growth and development. |
本系統中英文摘要資訊取自各篇刊載內容。