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4.1 This test method may be run together with Test Method C1432 to analyze for trace impurities in Pu metal. Using the technique described in this test method and the technique described in Test Method C1432 will provide the analyst with a more thorough verification of the impurity concentrations contained in the Pu metal sample. In addition, Test Method C1432 can be used to determine impurity concentrations for analytes such as Ca, Fe, Na, and Si, which have not been determined using this test method.
4.2 This test method can be used on Pu matrices in nitrate solutions.
4.3 This test method has been validated for use on materials that meet the specifications described in Specification C757 and Test Methods C758 and C759.
4.4 This test method has been validated for all elements listed in Table 1.
TABLE 1 Impurity Elements, Mean Percent Recoveries and Percent Relative Standard DeviationsElement
N
Mean R, %
RSD, %
Lithium
22
93.65
7.26
Beryllium
22
96.46
8.14
Boron
22
98.48
6.97
Magnesium
22
98.30
7.58
Aluminium
22
99.66
8.62
Phosphorus
22
99.43
8.96
Titanium
22
99.25
2.44
Vanadium
22
94.44
7.38
Chromium
22
97.29
3.90
Manganese
22
95.48
3.46
Cobalt
22
95.92
4.35
Nickel
22
96.78
3.98
Zinc
22
94.24
4.12
Copper
22
96.66
3.70
Germanium
22
98.16
4.54
Arsenic
22
101.38
8.67
Selenium
22
101.15
8.00
Rubidium
22
100.24
5.36
Strontium
22
98.89
4.16
Yttrium
22
98.07
3.81
Zirconium
22
98.10
3.41
Niobium
22
96.92
3.65
Molybdenum
22
97.82
3.81
MolybdenumA
21
98.36
2.90
Ruthenium
22
98.32
2.14
Palladium
22
97.69
2.49
Silver
22
105.14
7.88
SilverA
21
106.56
4.26
Cadmium
22
96.03
3.72
Indium
22
98.01
3.57
Tin
22
97.25
3.94
Antimony
22
95.05
6.21
Tellurium
22
100.10
6.86
Caesium
22
101.81
6.93
Barium
22
97.99
3.68
Lanthanum
22
98.31
3.84
Cerium
22
97.57
3.72
Praeseodymium
22
97.32
3.00
Neodymium
22
97.22
3.56
Samarium
22
98.39
3.34
Europium
22
97.43
3.02
Gadolinium
22
100.04
2.78
Terbium
22
97.62
2.72
Dysprosium
22
98.18
2.20
Holmium
22
98.61
2.21
Erbium
22
98.05
2.29
Ytterbium
22
99.59
2.43
Lutetium
22
97.06
5.00
LutetiumA
21
97.79
3.72
Hafnium
22
100.32
3.95
Tantalum
22
93.42
3.21
TantalumA
21
93.89
2.43
Tungsten
22
96.29
3.54
Rhenium
22
99.75
3.28
Iridium
22
99.88
3.70
Platinum
22
100.57
3.93
Gold
22
101.20
5.35
GoldA
21
100.41
3.96
Thallium
22
100.09
5.02
Lead
22
101.58
5.54
Bismuth
22
100.70
5.43
Thorium
22
103.30
6.89
Uranium
22
104.14
9.11
A Without Outlying Value Область применения1.1 This Test Method covers the determination of 58 trace elements in plutonium (Pu) metal. The Pu sample is dissolved in acid, and the concentration of the trace impurities are determined by Inductively Coupled Plasma-Mass Spectroscopy (ICP-MS).
1.2 This Test Method is specific for the determination of trace impurities in Pu metal. It may be applied to other types of Pu materials, such as Pu oxides, if the samples are dissolved and oxidized to the Pu(IV) state. However, it is the responsibility of the user to evaluate the performance of other matrices.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns associated with its use. It is the responsibility of the user of this method to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use of this standard.