Analytical Suite Metadata

INRS/McMaster INAA (high DL)



Instrumental neutron activation analysis of 29 trace elements was performed on the till fractions.  These analyses were done by the Institut national de la recherche scientifique- Géoressources (INRS) on a 3-monitor reactor at McMaster University.

Distinguishing characteristic : 1 hour count, high detection limits

General Methodology:

Depending on sample density, 3 to 7 g of the sample were capped in 7 ml plastic containers.  Samples were irradiated at McMaster University's 3 monitor reactor.  A batch irradiation consisted of 21 samples and a standard (GTS-1).  The delay between irradiation and counting was 5 to 8 days.  A single 1 hour count (3 600 s) was performed on each sample.  The distance between the sample and the detector was 2 cm.  The proposed "detection limit" was calculated at the 2σ level.  Measurement error for concentrations greater than 10 times the detection limit is: ± detection limit + 5% of the measured value.  Below this concentration, measurement error increases.

Instrument: unstated

Sample material: solid

Sample weight: unstated


Analytical Technique:

Hierarchical classification

Technique >> Radiochemical methods >> Activation analysis >> Neutron activation >> INAA

Children

PGNAA | DGNAA


Analytical Decomposition:

Hierarchical classification

Decomposition >> None

Children

None


Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  3104     Ag_INA  5
2  3105     As_INA  0.5
3  3106     Au_INA  4
4  3107     Ba_INA  100
5  3108     Br_INA  0.5
6  3109     Ce_INA  2
7  3110     Co_INA  2
8  3111     Cr_INA  10
9  3112     Cs_INA  1
10  10  3113     Eu_INA  0.4
11  11  3114     Fe_INA  0.1
12  12  3115     Hf_INA  0.2
13  13  3116     Ho_INA  0.5
14  14  3117     La_INA  1
15  15  3118     Lu_INA  0.05
16  16  3119     Mo_INA  2
17  17  3120     Nd_INA  5
18  18  3121     Ni_INA  100
19  19  3122     Rb_INA  20
20  20  3123     Sb_INA  0.1
21  21  3124     Sc_INA  0.2
22  22  3125     Sm_INA  0.1
23  23  3126     Ta_INA  1
24  24  3127     Tb_INA  0.2
25  25  3128     Th_INA  0.4
26  26  3129     U_INA  0.5
27  27  3130     W_INA  2
28  28  3131     Yb_INA  0.2
29  29  3132     Zr_INA  200

Associated Analytical Packages:

IndexPackage IDPackage Name
1  12     INRS XRF + INAA (high detection limits)
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