Analytical Suite Metadata
Novatrack Analysts Limited (stream sediments) NADNC (U) 10**11 flux
Novatrack Analysts Limited, stream sediments; neutron activation delayed neutron counting (uranium) (10**11 flux)
Uranium was determined using a neutron activation method with delayed neutron counting. A detailed description of the method is provided by boulanger, et al. (1975). In brief, a 1-gram sample is weighed into a 7-dram polyethylene vial, capped and sealed. The irradiation is provided by the triumf cyclotron with an operating flux of 10**11 neutrons per square centimetre per second. The samples are pneumatically transferred from an automatic loader to the reactor, where each sample is irradiated for 60 seconds. After irradiation, the sample is again transferred pneumatically to the counting facility where after a 20-second delay the sample is counted for 60 seconds with six bf3 detector tubes embedded in paraffin. Following counting, the samples are automatically ejected into a shielded storage container.
Calibration is carried out every 40 samples as a minimum, using natural materials of known uranium concentration.
Sample material: solid
Sample weight: unstated
|Index||Method Order||Method ID||Quantity||Detection Limit|
Associated Analytical Packages:
|Index||Package ID||Package Name|
|1||375||Novatrack Analysts Limited (URP stream sediment) NADNC(U)|
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