Determination of Trace Lithium in Uranium Compounds by Adsorption on Activated Alumina Using a Micro-column Method
スポンサーリンク
概要
- 論文の詳細を見る
A novel method using a micro-column packed with active alumina as solid phase was proposed for separation of trace lithium from uranium compounds prior to determination. The method is based on a preliminary chromatographic separation of the total amount of uranium. This separation involves passing the solution containing sodium carbonate through active alumina and then eluting the trace lithium retained by the solid phase with a solution of sulfuric acid. Two modes, off-line and on-line micro-column preconcentration, were performed. In conjunction with atomic absorption spectrometry, this on-line preconcentration technique allows a determination of lithium at 10-9 level. Both off-line and on-line mode operation conditions were investigated in separation and determination of trace lithium by micro-column method (length of column bed, flow rate, etc.). The adsorption capacity of activated alumina was found to be 343 µg g-1 for lithium. Under the optimal operation condition, the detection limit (DL) of on-line preconcentration corresponding to three times the standard deviation of the blank (S/N = 3) was found to be 1.3 ng mL-1 and the RSD of this method is 3.32% (n = 5). The on-line calibration graph was linear over the range 20 - 200 ng mL-1. A good preconcentration factor 820 was achieved by experiment under the on-line mode. The developed method was applied to the analysis of trace lithium in nuclear grade uranium compounds.
- 社団法人日本分析化学会の論文
社団法人日本分析化学会 | 論文
- 微生物学的試験法による畜産物中に残留する抗菌性物質の高感度測定法(安心と安全に役立つ分析化学)
- 液体クロマトグラフィー/質量分析法による缶飲料中のビスフェノールAの定量 (環境ホルモンと分析化学)
- 高速液体クロマトグラフィーによるL-シトルリン測定を指標としたマクロファージの一酸化窒素産生の評価 ( バイオサイエンスと分析化学)
- 小型定電流電解電量/光度滴定装置の開発と食用油の過酸化物価定量への応用
- 固定化ヒスタミンオキシダーゼを用いる吸光検出フローインジェクション分析による魚醤中のヒスタミンの定量(安心と安全に役立つ分析化学)