ASTM D3865 Standard Test Method for Plutonium in Water
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ASTM International
Standard Test Method for Plutonium in Water
N D3865
Annotation
This test method covers the determination of alphaparticle- emitting isotopes of plutonium concentrations over 0.01 Bq/L (0.3 pCi/L) in water by means of chemical separations and alpha pulse-height analysis (alpha-particle spectrometry). Due to overlapping alpha-particle energies, this method cannot distinguish 239Pu from 240Pu. Plutonium is chemically separated from a 1-L water sample by coprecipitation with ferric hydroxide, anion exchange and electrodeposition. The test method applies to soluble plutonium and to suspended particulate matter containing plutonium. In the latter situation, an acid dissolution step is required to assure that all of the plutonium dissolves.
The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazards are given in Section 9
Автоматический перевод:
Метод стандартной пробы для плутония в воде
Этот метод испытаний покрывает определение alphaparticle-испускание изотопов плутониевых концентраций более чем 0.01 Bq/L (0.3 pCi/L) в воде посредством химических разделений и альфа-анализа высоты импульса (спектрометрия альфа-частицы). Из-за накладывающихся энергий альфа-частицы, этот метод не может различать 239Pu от 240Pu. Плутоний химически отделен от 1-L пробы воды соосаждением с гидроксидом железа, ионным обменом и гальванотехникой. Метод испытаний относится к растворимому плутонию и приостановленным твердым веществам, содержащим плутоний. В последней ситуации кислотный шаг роспуска требуется, чтобы уверять, что весь плутоний распадается.



