標準號：ISO 8298-2000
中文標準名稱：核燃料技術 硝酸溶液中毫克量钚的測定 鈰(Ⅳ)氧化和鐵Ⅱ還原后用重鉻酸鉀電位滴定法
英文標準名稱：Nuclear fuel technology - Determination of milligram amounts of plutonium in nitric acid solutions - Potentiometric titration with potassium dichromate after oxidation by CE(IV) and reduction by FE(II)
標準類型：F48;A46
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：F48;A46
國際標準分類號：27.120.30
適用范圍：1 This International Standard describes a precise and accurate analytical method for determining 1 mg to 5 mg of plutonium per millilitre in nitric acid solutions. 2 The method is very selective for plutonium. It is suitable for the direct determination of plutonium in materials ranging from pure product solutions, to solutions of mixed nuclear materials with a uranium/plutonium ratio up to 20:1. However, potential application to the assay of plutonium in solutions of irradiated nuclear fuels and solutions of mixed nuclear materials with uranium/plutonium ratios of 20:1 to 33:1 has not yet been documented. 3 The method recommends that the aliquot be weighed and that the titration burettes be calibrated gravimetrically in order to obtain adequate precision and accuracy. This does not preclude using any alternative technique which can be shown to give an equivalent accuracy. 4 As the reproducibility of the reaction conditions is important to maintain good performance, extensive automatization of the procedure is beneficial.