4F - B - PGNAA (0.5 ppm and 2 ppm B)
1 g samples are encapsulated in a polyethylene vial and placed in a thermalized beam of neutrons produced from a nuclear reactor. Samples are measured for the doppler broadened prompt gamma ray at 478 KeV using a high purity GE detector. Samples are compared to certified reference materials used to calibrate the system. A minimum of four standards are analyzed with every work order. Duplicates are analyzed when samples are provided. The detection limit reported is a function of the counting times required for each.
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Analysis
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Method
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Detection Limit
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Upper Limit
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|
B
|
PGNAA
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0.5 ppm
|
10,000 ppm
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|
B
|
PGNAA
|
0.2 ppm
|
10,000 ppm
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|