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題名 | 利用中子活化分析技術探討環境水樣中稀土元素的分析研究=Neutron Activation Analysis of Rare-Earth Elements in Water Samples |
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作者姓名(中文) | 孫毓璋; 楊末雄; | 書刊名 | 核子科學 |
卷期 | 34:2 1997.04[民86.04] |
頁次 | 頁102-110 |
分類號 | 343.382 |
關鍵詞 | 中化活化分析; 環境水樣; 稀土元素; Neutron activation analysis; Water samples; Rare-earth elements; |
語文 | 中文(Chinese) |
中文摘要 | 本研究探討中子活化分析應用於環境水樣中稀土元素分析的可行性。首先利用共沈澱技術探討水樣中稀土元素的前濃縮方法,使用之沈澱劑系統含有Oxine(8-quinolinol),APDC(Ammonium pyrrolidine dithiocarbamate)與Pb(NO�陛^�秘奶T種成份,利用其在特定 pH 條件下與稀土元素產生共沈澱,最後再將所得的共沈澱物利用中子照射,藉由加瑪能譜的測定探求樣品中各稀土元素的濃度。本分析方法對環境水樣中各稀土元素的偵測極限,以1,000 mL水樣為例,分別為La(100ng),Ce(100ng),Pr(10 μg),Nd(10 μg),Pm(10 μg),Sm(10 ng),Eu(0.01ng),Gd(1 μg), Tb(10 ng),Dy(10 μ),Ho(1 μg),Er(10 μg),Tm(0.01 ng),Yb(10 ng),及 Lu(10 ng)。由實驗結果顯示,所建立的分析方法可適用於環境水樣(包括海水、溫泉水及地下水)中稀土元素的分析。 |
英文摘要 | The present study is aimed at developing an analytical technique to determine trace levels of rare earth elements in environmental waters by neutron activation analysis with prior concentration by coprecipitation method. The trace elements in various water samples were at first coprecipitated with the addition of Oxine, APDC and Pb(NO��)�� as coprecipitating agents, and the precipitte obtained was then determined by neutron activation analysis. The limits of detection of the elements in the proposed method, typically for a 100mL sample, were found to be La(100 ng), Ce(100 ng),Pr(10 μg),Nd(10 μg),Pm(10 μg), Sm(10ng) Eu(0.01 ng), Gd(1 μg), Tb(10 ng), Dy(10 μg), H(1 μg)o, Er(10 μg), Tm(0.01 ng), Yb(10ng), and Lu(10ng). The applicability of the proposed method to the analysis of environmental water samples was demonstrated. |
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